Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation

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Given the scarcity of research focused on the relationship between FI and bank stability in Ethiopia, this paper seeks to address a crucial gap by analyzing both conventional and digital aspects of FI in relation with bank stability. Methods A two-stage principal component analysis (PCA) was conducted to construct a composite FI index, integrating 10 conventional and 5 digital indicators. The study applied a two-step robust system generalized method of moments (GMM) to analyze the effects of FI on bank stability, tests nonlinearities using Lind and Mehlum’s (2010) U-test, and examines causality through Dumitrescu-Hurlin (2012) and Juodis et al. (2021) causality tests. Results The result reveals an inverted U-shaped relationship between FI and bank stability. FI enhances stability up to a 30.3% threshold, beyond which increased transaction costs, information asymmetries, and adverse selection risks weaken stability. Capital adequacy moderates this effect, raising the threshold to 35.1%, but its stabilizing role diminishes at higher levels. Granger causality tests confirm a bidirectional relationship. Additionally, bank efficiency and GDP growth enhance stability, while real interest rates, total assets, and income diversification exert destabilizing effects. Conclusions This study makes three key contributions. First, it provides the first empirical analysis of the FI-stability nexus in Ethiopia. Second: (i), it develops a multidimensional FI index; (ii), explores both linear and nonlinear relationships, and (iii) examines macroprudential regulation as a moderating factor. Third, it tests causality, offering policy insights. To enhance stability while mitigating risks, policymakers must balance FI expansion, enforce regulatory frameworks, and implement targeted capital requirements. Regulators should strengthen consumer protection and financial literacy, while banks must optimize outreach, manage credit risk, and ensure prudent asset allocation and liquidity management to sustain financial stability. " } { "@context": "http://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": "1", "item": { "@id": "https://f1000research.com/", "name": "Home" } }, { "@type": "ListItem", "position": "2", "item": { "@id": "https://f1000research.com/browse/articles", "name": "Browse" } }, { "@type": "ListItem", "position": "3", "item": { "@id": "https://f1000research.com/articles/13-1369/v2", "name": "Financial inclusion and stability in Ethiopia using bank-level data:..." } } ] } Home Browse Financial inclusion and stability in Ethiopia using bank-level data:... ALL Metrics - Views Downloads Get PDF Get XML Cite How to cite this article Arebo M, Hando F and Mekonnen A. Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.12688/f1000research.158461.2 ) NOTE: If applicable, it is important to ensure the information in square brackets after the title is included in all citations of this article. Close Copy Citation Details Export Export Citation Sciwheel EndNote Ref. Manager Bibtex ProCite Sente EXPORT Select a format first Track Share ▬ ✚ Research Article Revised Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] Mohammed Arebo https://orcid.org/0009-0006-8289-4336 1 , Filmon Hando https://orcid.org/0000-0001-5734-5438 1 , Andualem Mekonnen 1 Mohammed Arebo https://orcid.org/0009-0006-8289-4336 1 , Filmon Hando https://orcid.org/0000-0001-5734-5438 1 , Andualem Mekonnen 1 PUBLISHED 15 Apr 2025 Author details Author details 1 Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Mohammed Arebo Roles: Conceptualization, Data Curation, Formal Analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – Original Draft Preparation, Writing – Review & Editing Filmon Hando Roles: Supervision, Validation, Writing – Review & Editing Andualem Mekonnen Roles: Supervision, Validation, Writing – Review & Editing OPEN PEER REVIEW DETAILS REVIEWER STATUS Abstract Background This paper examines the impact of FI on bank stability within Ethiopian context, using panel data from 17 commercial banks over the period 2015-2023. Given the scarcity of research focused on the relationship between FI and bank stability in Ethiopia, this paper seeks to address a crucial gap by analyzing both conventional and digital aspects of FI in relation with bank stability. Methods A two-stage principal component analysis (PCA) was conducted to construct a composite FI index, integrating 10 conventional and 5 digital indicators. The study applied a two-step robust system generalized method of moments (GMM) to analyze the effects of FI on bank stability, tests nonlinearities using Lind and Mehlum’s (2010) U-test, and examines causality through Dumitrescu-Hurlin (2012) and Juodis et al. (2021) causality tests. Results The result reveals an inverted U-shaped relationship between FI and bank stability. FI enhances stability up to a 30.3% threshold, beyond which increased transaction costs, information asymmetries, and adverse selection risks weaken stability. Capital adequacy moderates this effect, raising the threshold to 35.1%, but its stabilizing role diminishes at higher levels. Granger causality tests confirm a bidirectional relationship. Additionally, bank efficiency and GDP growth enhance stability, while real interest rates, total assets, and income diversification exert destabilizing effects. Conclusions This study makes three key contributions. First, it provides the first empirical analysis of the FI-stability nexus in Ethiopia. Second: (i), it develops a multidimensional FI index; (ii), explores both linear and nonlinear relationships, and (iii) examines macroprudential regulation as a moderating factor. Third, it tests causality, offering policy insights. To enhance stability while mitigating risks, policymakers must balance FI expansion, enforce regulatory frameworks, and implement targeted capital requirements. Regulators should strengthen consumer protection and financial literacy, while banks must optimize outreach, manage credit risk, and ensure prudent asset allocation and liquidity management to sustain financial stability. READ ALL READ LESS Keywords Financial Inclusion; Principal Component Analysis; Bank stability; GMM; Ethiopia Corresponding Author(s) Mohammed Arebo ( [email protected] ) Close Corresponding author: Mohammed Arebo Competing interests: No competing interests were disclosed. Grant information: The author(s) declared that no grants were involved in supporting this work. Copyright: © 2025 Arebo M et al . This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. How to cite: Arebo M, Hando F and Mekonnen A. Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.12688/f1000research.158461.2 ) First published: 15 Nov 2024, 13 :1369 ( https://doi.org/10.12688/f1000research.158461.1 ) Latest published: 15 Apr 2025, 13 :1369 ( https://doi.org/10.12688/f1000research.158461.2 ) Revised Amendments from Version 1 In this updated version of the manuscript, we have thoroughly addressed all reviewer comments and introduced significant improvements to enhance the study's rigor, clarity, and contribution to the field. The revisions are as follows: First, we have strengthened the abstract and introduction by incorporating a specific policy recommendation and explicitly highlighting the novelty of the study. By comparing our work with previous research, we have clarified how our methodology and findings address critical gaps in the literature, particularly in understanding the relationship between financial inclusion (FI) and banking stability. Second, to provide a stronger theoretical foundation, we have enriched the theoretical framework and updated the literature review with the most recent studies. The empirical literature review has been restructured to focus on the two key variables of the study: (i) FI and banking stability, (ii) non-linear relationship between FI and bank stability, (iii) the moderating effects of macro-prudential regulation. This segmentation allows for a clearer formulation of hypotheses and a more coherent connection to the empirical analysis. Additionally, we have provided more details on the stylized facts of the banks studied. Third, in the methodology section, we have justified the methods used by comparing them with existing approaches in the field. Fourth, one of the most significant improvements in this version is the inclusion of a non-linearity test to address the dynamic nature of financial studies. This test allows us to better capture the dynamic nexus between FI and stability. Furthermore, we have introduced an analysis of the role of macro-prudential regulation in the FI-stability nexus. Lastly, in the discussion section, we have compared our findings with those of existing studies to contextualize our results. The inclusion of the non-linearity test and the analysis of macro-prudential regulation has allowed us to present a more nuanced understanding of the FI-stability relationship. In this updated version of the manuscript, we have thoroughly addressed all reviewer comments and introduced significant improvements to enhance the study's rigor, clarity, and contribution to the field. The revisions are as follows: First, we have strengthened the abstract and introduction by incorporating a specific policy recommendation and explicitly highlighting the novelty of the study. By comparing our work with previous research, we have clarified how our methodology and findings address critical gaps in the literature, particularly in understanding the relationship between financial inclusion (FI) and banking stability. Second, to provide a stronger theoretical foundation, we have enriched the theoretical framework and updated the literature review with the most recent studies. The empirical literature review has been restructured to focus on the two key variables of the study: (i) FI and banking stability, (ii) non-linear relationship between FI and bank stability, (iii) the moderating effects of macro-prudential regulation. This segmentation allows for a clearer formulation of hypotheses and a more coherent connection to the empirical analysis. Additionally, we have provided more details on the stylized facts of the banks studied. Third, in the methodology section, we have justified the methods used by comparing them with existing approaches in the field. Fourth, one of the most significant improvements in this version is the inclusion of a non-linearity test to address the dynamic nature of financial studies. This test allows us to better capture the dynamic nexus between FI and stability. Furthermore, we have introduced an analysis of the role of macro-prudential regulation in the FI-stability nexus. Lastly, in the discussion section, we have compared our findings with those of existing studies to contextualize our results. The inclusion of the non-linearity test and the analysis of macro-prudential regulation has allowed us to present a more nuanced understanding of the FI-stability relationship. See the authors' detailed response to the review by Inès Gharbi See the authors' detailed response to the review by Hicham Sadok See the authors' detailed response to the review by Najabat Ali READ REVIEWER RESPONSES 1. Introduction In contemporary financial policymaking, the pursuit of financial system stability has increasingly been viewed in alongside with the promotion of financial inclusion (FI) ( Antwi et al., 2024 ; Arora, 2020 ). Growing evidence suggests that the degree of FI can siginificantly impact the stability of financial systems ( Damane & Ho, 2024 ; Antwi et al., 2024 ; Vo et al., 2020 ; Kim et al., 2020 ; Ahamed & Mallick, 2019 ). Historically, the dominant focus of financial authorities was primarily on preserving financial stability ( Schinasi, 2005 ). However, over recent decades, FI has risen to prominence as a key policy goal, complementing the objectives of stability, integrity, and consumer protection, largely driven by the initiatives of global regulatory bodies and stakeholders ( Hannig & Jansen, 2010 ). This shift prompts a critical inquiry into whether financial stability and FI function as substitutes or complements within the broader regulatory framework ( Morgan & Pontines, 2017 ). FI is conceptualized as encompassing the availability, access, and usage of financial products and services ( Nguyen, 2021 ; Pesqué-Cela et al., 2021 ; Demirgüç-Kunt et al., 2017 ; Allen et al., 2016 ; Sarma, 2016 ; Babajide et al., 2015 ). Specifically, “availability” denotes the infrastructural capacity of financial institutions, measured by the number of bank branches, registered agents, and ATMs ( Nguyen & Du, 2022 ; Sarma, 2016 ). “Access” (or penetration) reflects the extent to which financial services reach society, operationalized as the number of mobile banking, internet banking, and wallet accounts across commercial banks, microfinance institutions ( Ismael & Ali, 2021 ; Nguyen, 2021 ). “Usage” captures the actual adoption of financial products, assessed by the total volume of credit and deposits relative to GDP ( Nguyen & Du, 2022 ; Nguyen, 2021 ; Sarma, 2016 ). Conversely, bank stability, refers to the resilience of financial institutions to economic shocks, ensuring the uninterrupted mediation of savings and investments. It is characterized by the maintenance of adequate capital, effective risk management, and sustained public confidence to avert crises such as bank runs and systemic collapses ( Koudalo & Toure, 2023 ; Oanh et al., 2023 ; Anatolyevna & Ramilevn, 2013 ; Schinasi, 2004 ). The determinants of bank stability can differ significantly across various contexts, requiring tailored policy responses ( Ozili, 2018 ). Factors influencing bank stability include internal elements such as general ledger (GL) and profit-loss (PL) accounts, as well as external socio-economic and political conditions ( Ha & Nguyen, 2023 ). A broader conceptualization of financial stability extends beyond individual banks to capture systemic resilience, market volatility, and rare financial crises ( Cihak, 2020 ). Ha & Nguyen, (2023) and Borio, (2003) , emphasized that stability requires both microprudential measures, aimed at reducing individual bank failures, and macroprudential policies to mitigate contagion effects. Empirical studies on the impact of FI on bank stability in developing countries is scarce ( Chinoda & Kapingura, 2023 ; Koudalo & Toure, 2023 ; Jungo et al., 2022 ). Neglecting this relationship could lead to severe consequences, including costly financial crises or ongoing financial exclusion ( Danisman & Tarazi, 2020 ; Čihák et al., 2016 ). Schoenmaker (1996) highlights that failures within individual financial sectors can trigger contagion effects, leading to widespread instability stemming from the collapse of financial institutions. In such scenarios, a single institution’s failure can create a ripple effect, eroding investor confidence and prompting a rush to liquidate deposits ( Huynh et al., 2020 ). Therefore, understanding contagion risk is crucial for comprehending the dynamics of the financial system and its stability ( Huynh et al., 2020 ). Consequently, policymakers must adeptly balance the trade-offs and synergies between fostering FI and maintaining stability ( Damane & Ho, 2024 ; Čihák et al., 2016 ). While FI is widely recognized as a determinant of financial stability ( Oanh et al., 2023 ), existing studies present divergent perspectives. A dominant strand argues that FI enhances stability by depositor base, mitigating liquidity risk and fostering economic resilience (e.g., Oanh et al., 2023 ; Koudalo & Toure, 2023 ; Malik et al., 2022 ; Nguyen & Du, 2022 ; Vo et al., 2020 ; Pham & Doan, 2020 ; Banna & Alam, 2021 ; Ahamed & Mallick, 2019 ; Le et al., 2019 ; Neaime & Gaysset, 2018 ; Morgan & Pontines, 2014 ), while others caution that extending credit to previously unbanked individuals may increase default rates and destabilize financial institutions (e.g., Umar & Akhtar, 2024 ; Antwi & Kong, 2023 ; Ha & Nguyen, 2023 ; Damrah et al., 2023 ; Barik & Pradhan, 2021 ; Feghali et al., 2021 ). However, three critical gaps identified from the existing literature. First, research disproportionately rely on macro-level indicators, analyzing regions such as Sub-Saharan Africa ( Damane & Ho, 2024 ; Chinoda & Kapingura, 2023 ; Jima & Makoni, 2023 ; Anarfo et al., 2020 ), emerging economies ( Jungo et al., 2022 ; Wang & Luo, 2022 ; Vo et al., 2020 ; Morgan & Pontines, 2017 ), ASEAN ( Nguyen & Du, 2022 ; Sethy & Goyari, 2022 ), Asia ( Malik et al., 2022 ; Pham & Doan, 2020 ; Vo et al., 2020 ; Le et al., 2019 ), MENA ( Neaime & Gaysset, 2018 ), Africa ( Koudalo & Toure, 2023 ; Kebede et al., 2021 ), and BRICS ( Talbi & Sebai, 2025 ; Sebai & Talbi, 2024 ; Barik & Pradhan, 2021 ). Despite, studies examining FI’s impact at the micro (bank-level) remain limited (e.g., Umar & Akhtar, 2024 ; Damrah et al., 2023 ; Anthony-Orji et al., 2022 ; Matsebula & Sheefeni, 2022 ). For instance, Ethiopia, where only 10% of households’ access formal credit ( Lakew & Azadi, 2020 ) and 99.8% of loans are concentrated in urban areas ( NBE-FSR, 2024 ), remains conspicuously absent from empirical scrutiny. While existing studies in Ethiopia have investigated financial sector stability ( Filatie & Sharma, 2024 ; Kebede et al., 2024 ; Fisseha, 2023 ; Yitayaw et al., 2023 ; Dress, 2022 ; Abdu, 2021 ; Isayas & McMillan, 2021 ; Aman, 2019 ; Meher & Getaneh, 2019 ; Zelie & Wassie, 2019 ; Meressa, 2018 ), the impact of FI on bank stability remains largely unexplored. Second, methodological limitations persist, including (i) prior studies have often relied solely on conventional FI indicators, ignoring its multidimensional nature ( Mapurita & Mayoukou, 2024 ) or focused exclusively on digital aspects (e.g., Antwi & Kong, 2023 ; Chinoda & Kapingura, 2023 ; Banna & Alam, 2021 ). This narrow focus persists despite evidence that digital and traditional channels interact dynamically to shape stability outcomes ( Anton & Nucu, 2024 ), resulting in an incomplete understanding of FI. (ii), corroborating Damane & Ho, (2024) claims, most previous studies ignored nonlinear dynamics, and insufficient attention moderating impact of macroprudential regulation on FI-bank stability nexus (see Hua et al., 2023 ). Third, reliance on linear estimators and inadequate causal inference techniques (e.g., OLS, fixed effects) obscures bidirectional relationships and endogenous feedback loops. This study advances the FI-stability discourse through three novel contributions. First, it addresses the geographic imbalance by focusing on Ethiopia, a paradigmatic case of high financial exclusion (1% rural bank penetration) coupled with systemic concentration risks (23.5% of loans held by top borrowers). Such extremes provide a unique lens to test FI’s stability implications under conditions of structural fragility. Second, this study pushes the frontier by: (i) constructing a multidimensional FI index via two-stage PCA, integrating 10 traditional and 5 digital indicators; (ii) applying a two-step system GMM estimator to mitigate endogeneity and unobserved heterogeneity; (iii) pioneering the examination of the nonlinear FI-stability relationship in Ethiopia, validated through Lind and Mehlum’s (2010) U-test for greater statistical rigor; and (iv) introducing macroprudential regulation as a moderating variable, an overlooked dimension in low-income settings. Third, this study employs Dumitrescu-Hurlin (2012) and Juodis et al. (2021) causality tests to disentangle bidirectional linkages. Finally, the study offers actionable insights for policymakers, guiding strategies to enhance both FI and financial stability in Ethiopia. The remainder of the study is structured as: Part 2 reviews the literature; Part 3 details the data sources and econometric methods; Part 4 presents and discusses the empirical results; and Part 5 concludes with key findings and policy implications. 2. Literature review 2.1 Theoretical literature review FI, from a macroeconomic perspective, is seen as a catalyst for “creative destruction,” promoting economic growth, reducing inequality, and enhancing financial stability. However, at the micro level, excessive FI can lead to opportunistic behaviors, such as fund misuse and deliberate payment delays, which may undermine financial stability ( Hua et al., 2023 ). The impacts of FI are neither uniform nor static; they vary across different temporal and spatial contexts. This has led to divergent views among researchers regarding its impact on bank stability, with two divergent schools of thought emerging as the one positing a FI-stability effect and the other suggesting a FI-instability outcome ( Damrah et al., 2023 ; Moaz, 2022 ). To that end, the relationship between FI and bank stability has become a central theme in both academic and policy discourse ( Čihák et al., 2016 ). This study employs a multi-theoretical approach, drawing on asymmetric information theory, financial intermediation theory, systemic risk theory, and portfolio theory. These theoretical underpinnings collectively offer a nuanced understanding of the pathways through which FI can effect bank stability in Ethiopia. Asymmetric information theory, highlighted by Akerlof (1970) , addresses the challenges posed by uneven information distribution in financial markets. In FI, this imbalance is particularly significant as institutions serve previously unbanked populations. Difficulties in assessing creditworthiness can lead to adverse selection, hindering credit risk management and operational efficiency, which may compromise financial stability ( Oanh et al., 2023 ; Moaz, 2022 ; Sethy & Goyari, 2022 ; Barik & Pradhan, 2021 ; Khan, 2011 ; Bofondi & Gobbi, 2003 ). Balancing information asymmetry within FI context can thus strengthen the financial system. The financial intermediation theory underscores the pivotal role of banks in linking savers with borrowers ( Scholtens & Wensveen, 2003 ; Diamond, 1984 ), thereby facilitating FI. By providing liquidity, managing risks, and bridging informational gaps, banks contribute to the efficient allocation of capital and the mitigation of risks, which enhances overall financial stability ( Servigny & Renault, 2004 ). This theory emphasizes that by expanding financial access, particularly in developing economies where financial exclusion is significant, banks can improve their performance by broadening their customer base, increasing deposits, and fostering a more resilient financial system ( Kim et al., 2018 ; Diamond, 1984 ). This phenomenon lessens information asymmetry, thereby lessens market imperfections ( Oanh et al., 2023 ). Systemic risk theory, as developed by Minsky (1982) and later refined by Borio (2011) , addresses the interconnectedness of financial institutions and the amplification of shocks through mechanisms such as leverage, asset price bubbles, and procyclicality. Borio differentiates systemic risk into temporal and cross-sectional dimensions. Temporal risk involves the dynamic evolution of aggregate risk, while cross-sectional risk pertains to the distribution of risk within the financial system, influenced by common exposures and counterparty risks. Within the context of FI, Khan (2011) suggests that expanding borrower bases can lower lending standards, potentially destabilizing the financial system. Conversely, Hannig and Jansen (2010) argue that FI can enhance stability by diversifying deposit and loan bases, involving segments less susceptible to economic cycles, while Prasad (2010) highlights the positive effects of credit access on employment and economic growth. Portfolio theory highlights the significance of diversification in mitigating risk ( Markowitz, 1952 ). In the context of FI, a diversified loan portfolio can potentially reduce the impact of credit losses on individual banks and the overall financial system ( Beck et al., 2013 ; Wang & Lin, 2021 ). Adem (2022) concurs, noting that diversification lowers bankruptcy risk for banks. Khan (2011) outlines three main ways of mitigating the FI on financialinstability: diversification of bank assets through increased lending to smaller firms reduces portfolio risk; an expanded and stable deposit base lessens reliance on volatile non-core financing; and improved monetary policy transmission enhances stability. However, as Huynh & Dang (2021) argue, the effectiveness of diversification hinges on the correlation between loan segments and the portfolio’s overall risk profile. Drawing on the above theoretical foundations, this study offers a unique lens through which the impact of FI on bank stability can be comprehended. Figure 1 synthesizes these theoretical frameworks, underscoring both stabilizing and destabilizing mechanisms. Figure 1. Theoretical channels of interactions between FI and bank stability. Source: Adopted from Damane and Ho (2024) , Sethy and Goyari (2022) and Barik and Pradhan (2021) . On the positive side, corroborating Diamond’s (1984) financial intermediation theory, Oanh (2024) assert that increased intermediation enhances the flow of funds between borrowers and savers, effectively bridging the gap between those with surplus funds and those in deficit. This formalization strengthens monetary policy transmission, optimizes resource allocation, and reduces dependence on informal financial systems ( Damane & Ho, 2024 ; Sethy & Goyari, 2022 ). Additionally, FI facilitates consumption smoothing and savings mobilization, expanding banks’ deposit bases and liquidity buffers ( Sethy & Goyari, 2022 ; Khan, 2011 ). In accordance with Markowitz’s (1952) portfolio theory, Khan (2011) emphasizes that higher savings lead to increased investment financing and diversified credit access, mitigating loan concentration risk and enhancing risk-sharing mechanisms. Lending to small and medium-sized enterprises (SMEs) further mitigates exposure to single borrowers, lowering the likelihood of non-performing loans (NPLs) and reinforcing stability ( Damane & Ho, 2024 ). However, excessive FI without proper risk management can undermine financial stability ( Dienillah et al., 2018 ). Supporting the negative implications of Akerlof’s (1970) information asymmetry theory, ( Damane & Ho, 2024 ; Sethy & Goyari, 2022 ), suggests that extending financial services to low-income segments increases adverse selection and moral hazard, elevating credit risk and operational inefficiencies. Specifically, rapid FI expansion often necessitates outsourcing credit assessments and Know Your Customer (KYC) functions, heightening reputational risks and weakening due diligence ( Barik & Pradhan, 2021 ; Khan, 2011 ). Furthermore, aligning with Minsky’s (1982) systemic risk theory, Sarmiento (2024) , highlights that financial instability within non-bank financial institutions (NBFIs) can spill over into the broader financial ecosystem, amplifies systemic vulnerabilities. 2.2 Empirical review and hypothesis development 2.2.1 Financial inclusion and bank stability Empirical research regarding the impact of FI on the stability of financial systems presents varied outcomes ( Damrah et al., 2023 ; Feghali et al., 2021 ; Vo et al., 2020 ). Despite data limitations, these studies provide perspectives on both the positive and negative effects of FI on the stability of banks. Khan (2011) identified three key channels through which financial inclusion enhances bank stability. First, by promoting asset diversification, FI reduces the risk and cost associated with bank financing, thereby lowering custodial expenses and potential losses. Second, the inclusion of small depositors attracts retail mobilized capital, which is generally more stable than wholesale funding sources. Third, formalization of the informal segment of the population improves the monetary policy transmission, ultimately strengthening the overall stability of the banking system. Wang and Luo (2022) , using data from over 1500 commercial banks across 36 emerging economies, found that FI significantly enhances bank stability by promoting operational efficiency, risk management, and funding stability. Similarly, Nguyen and Du (2022) , employing System GMM for 102 banks in six ASEAN countries, concluded that FI promotes stability through increased customer deposits and reduced non-performing loans (NPLs). Their findings align with those of Morgan and Pontines (2017) , who showed that lending to small and medium sized enterprises (SMEs) diversifies risk and contributes to higher Z-scores and lower NPL ratios, key indicators of bank stability. These studies collectively highlight how extending credit to SMEs serves as a buffer against financial instability by diversifying loan portfolios and reducing concentrated risk exposure. During financial crises, resources mobilized from FI initiatives are vital for helping institutions escape crisis and enhance resilience ( Ha & Nguyen, 2023 ; Hannig & Jansen, 2010) . Vo et al. (2020) and Chinoda and Kapingura (2023) both underscore the importance of FI in reducing systemic risks. Vo et al. (2020) highlight its role in broadening the depositor base and improving financial resilience in emerging markets, while Chinoda and Kapingura (2023) emphasize the stabilizing effects of digital FI in Sub-Saharan Africa, noting that it significantly reduces NPLs and enhances bank stability. Another layer of analysis emerges in the work of López and Winkler (2019) , who explore FI during periods of financial crises using 189 economies data for the period of 2004–2017. Their study finds that countries with higher levels of FI experience less severe disruptions in credit availability during economic downturns. Similarly, Pham and Doan (2020) , examining 42 countries across Asia using Feasible Generalized Least Squares (FGLS), conclude that even a weak positive impact of FI on stability is enough to safeguard financial markets against extreme volatility, especially when FI fosters a stable retail deposit base. Jungo et al. (2022) further emphasize the importance of expanding financial access and encouraging investment in FI to maintain monetary system stability, particularly in developing countries. In general, studies like ( Chinoda & Kapingura, 2023 ; Ha & Nguyen, 2023 ; Jima & Makoni, 2023 ; Koudalo & Toure, 2023 ; Nguyen & Du 2022 ; Wang & Luo, 2022 ; Pham & Doan, 2020 ; Vo et al., 2020 ; Ahamed & Mallick 2019 ; Le et al., 2019 ; Dienillah et al., 2018 ; Neaime & Gaysset, 2018 ; Morgan & Pontines, 2014 ; Hannig & Jansen, 2010 ), posits that FI contributes to bank stability by expanding the deposit base, diversifying risks, reducing income inequality, and improving regulatory efficiency through policy transmission. On the other hand, FI has an adverse impact on bank stability. Oanh et al. (2023) , claims that FI brings many new, inexperienced clients into the formal financial sector, creating challenges in the credit market. Due to asymmetric information, lenders struggle to assess borrowers’ creditworthiness, with no credit record leads risking stability ( Jima & Makoni, 2023 ). Damrah et al. (2023) present a nuanced view of FI’s impact on bank stability in Kuwait from 2003 to 2017, illustrating how inclusion can have both positive and negative effects depending on the type of bank (Islamic vs. conventional) and external factors such as financial crises. Their Linear Mixed Model (LMM) reveals that while FI improves access to services, it also introduces inefficiencies and increased risk exposure, particularly during times of economic distress. Their findings align with those of Barik and Pradhan (2021) , who, using system-GMM estimators for BRICS nations from 2005 to 2015, argue that rapid credit expansion facilitated by FI can deteriorate lending standards and escalate non-performing loans (NPLs). Employing System GMM ranging from 2011-2019, Umar and Akhtar (2024) , examining Chinese banks, found that while FI generally reduces bank risk-taking, it can increase risks in unlisted and large banks, suggesting that the impact of FI varies depending on bank characteristics. Similarly, Le et al. (2019) , using Feasible Generalized Least Squares (FGLS), highlight the trade-offs associated with FI, noting that while FI promotes financial sustainability, it also negatively impacts financial efficiency due to the operational challenges of servicing previously unbanked populations. In light of the above empirical literature reviewed, this study proposes the following hypothesis: H1: Financial inclusion has a positive impact on bank stability 2.2.2 Non-linear relationship between financial inclusion and bank stability A significant limitation of existing empirical research is its predominant focus on the mean effects of FI on financial stability, often overlooking the variation in this relationship across different levels of stability ( Damane & Ho, 2024 ). Despite the mean impact of FI on bank stability, the findings of ( Sebai et al., 2025 ; Hua et al., 2023 ; Khémiri et al., 2024 ; Ahamed & Mallick, 2019 ), reveals an inverted U-shaped relationship between FI and financial stability, demonstrating that beyond a certain threshold, further inclusion can destabilize the financial system. Chinoda and Kapingura (2024) identify an inflection point in fintech-driven FI, where early-stage adoption reduces risk-taking but excessive competition later elevates funding costs and operational risks. Contrasting perspectives, such as the U-shaped hypothesis ( Talbi & Sebai, 2025 ; Antwi et al., 2024 ; Sebai & Talbi, 2024 ; Dang & Thi, 2022 ; Saha & Dutta, 2021 ), argue that FI’s stabilizing effects resurge at higher development stages. The above contrasting empirical evidence suggests that FI does not exert a uniform influence on financial stability ( Sebai & Talbi, 2024 ). Instead, its effects depend on contextual factors such as market concentration, financial sector maturity and institutional quality. Kebede et al. (2021) further emphasize the intricate nature of FI in Africa, noting that its benefits may be limited by high market concentration, which can stifle competition and reduce the effectiveness of inclusion efforts. Dienillah et al. (2018) , using a Tobit model for 19 countries from 2004 to 2014, revealed that FI positively impacts stability in high-income nations but shows insignificant effects in lower-income groups. This highlights the need for tailored FI strategies suited to specific economic and regulatory environments. This view is echoed by Oanh et al. (2023) and Jima and Makoni (2023) , who highlight the contextual nature of FI’s impact. Employing panel vector autoregression (PVAR) model for 58 countries (27 low financial development states and 31 high financial development states) from 2004 to 2020, Oanh et al. (2023) found that FI positively correlates with stability in low-financial-development countries, but this relationship turns negative in more developed financial systems, where excessive credit access may heighten systemic risks. Similarly, Jima and Makoni (2023) , using ARDL cointegration and Granger causality tests from 2000 to 2019 for 26 Sub-Saharan African countries, revealed that while FI contributes to both short-term and long-term stability, the relationship is bidirectional and contingent on broader economic and institutional conditions. Ahamed and Mallick (2019) extended this argument by analyzing a global dataset of 2635 banks in 86 countries. Using two-step system GMM, they posited that FI enhances stability by increasing customer deposits and lowering marginal banking costs, with the effectiveness of these benefits being contingent on institutional quality. They highlight the role of a robust institutional framework in ensuring that FI does not devolve into unchecked risk-taking. In this context, the study implicitly warns against viewing FI initiatives in a silo, devoid of regulatory oversight or institutional support. Similarly, Hannig and Jansen (2010) emphasized the role of robust institutional frameworks in ensuring that FI initiatives do not lead to unchecked risk-taking, a finding also supported by Sethy and Goyari (2022) in their study of South Asian countries, where FI was found to be a key driver of long-term stability. In general, based on the observed nonlinear impact of inclusive finance on financial stability ( Sebai et al., 2025 ; Talbi & Sebai, 2025 ; Antwi et al., 2024 ; Anton & Nucu, 2024 ; Kebede et al., 2024 ; Hua et al., 2023 ; Khémiri et al., 2024 ; Sebai & Talbi, 2024 ), this study hypothesizes: H2. There is an inverted U-shaped relationship between FI and bank stability 2.2.3 The moderating effects of macro-prudential regulation Contrary to the assumptions of classical economics, market failure theory underscores the limitations of market forces in efficiently governing the real economy. Risks stemming from information asymmetries and externalities can propagate systemic vulnerabilities, disproportionately affecting traditional commercial banks ( Chinoda & Kapingura, 2024 ; Pantielieieva et al., 2020 ). To mitigate such risks, financial regulation emerges as a critical safeguard, curbing excessive risk-taking by banks ( Chinoda & Kapingura, 2024 ). Among regulatory tools, the capital adequacy ratio (CAR) is a cornerstone of prudential oversight, directly enhancing financial stability by ensuring banks maintain sufficient capital buffers ( Anarfo et al., 2020 ). While CAR independently strengthens financial stability, its interaction with FI presents another dimension. FI, concieved as expanding access to formal financial services, promotes financial deepening and reduces reliance on informal channels ( Talbi & Sebai, 2025 ). Yet stringent CAR requirements may inadvertently restrict banks’ lending capacity, resulting in credit rationing that stifles FI ( Anarfo et al., 2020 ; Gambacorta & Mistrulli, 2004 ). The stability implications of this interaction hinge on regulatory and institutional contexts. In weak regulatory environments, rapid FI expansion may incentivize reckless risk-taking, eroding the stabilizing effects of capital buffers ( Beck et al., 2013 ). Conversely, well-capitalized banks are better positioned to manage credit quality, thereby mitigating risks associated with financial deepening ( Thakor, 2014 ). Robust capital frameworks, when paired with FI, can enhance stability by diversifying revenue streams and reducing dependence on volatile funding ( Anarfo et al., 2020 ; Hua et al., 2023 ). However, unchecked credit growth may heighten financial fragility ( Morgan & Pontines, 2014 ). Since existing literature has not thoroughly explored this interaction, but ( Anarfo et al., 2020 ; Hua et al., 2023 ) suggest that the relationship between CAR and FI positively influences bank stability. Owing prior studies, this interaction suggests that FI, when moderated by capital adequacy, strengthens bank stability, leading to the hypothesis: H3: The interaction between capital adequacy and FI improves bank stability. 2.2.4 Stylized facts about Ethiopian banking sector The empirical literature on FI and financial stability offers a rich diverse of findings, suggesting that a recurring theme across both streams of research is the need to avoid viewing FI or stability in a silo. This concise review of the literature is crucial for our empirical analysis. This is particularly relevant for Ethiopia, where the banking sector exhibits unique structural characteristics that shape the FI-stability nexus. Ethiopian banking sector is state-dominated, with limited competition and underdeveloped capital markets ( Mengesha & Berde, 2023 ). Government securities are absorbed by captive investors at negative real rates, and the absence of market-based debt issuance reflects systemic inefficiencies ( Abdu, 2022 ). State-owned Commercial Bank of Ethiopia (CBE) holds 49.5% of total assets and 48.7% of deposits, while five mid-sized banks control 28.0% and 29.4%, respectively, and 24 small banks account for the rest ( NBE-FSR, 2024 ). Financial deepening is limited, with loans and bonds at 21.4% of GDP and deposits at 24.8% in 2023. Negative real deposit interest rates, driven by high inflation (29.3%), alongside 8% savings deposit rate and a 14.25% lending rate (( NBE Annual Report, 2024 ), highlight persistent financial distortions. FI remains highly uneven, with less than 1% of loans disbursed to rural areas, while large borrowers (those with credit exposure above 10 million birr) constitute only 0.5% of clients but control 74.8% of total banking sector loans ( NBE-FSR, 2024b ). Recent FI strategic reforms, including introduction of interest-free banking, Safaricom Ethiopia’s licensing under the National Digital Payment Strategy (NDPS), and the Digital ID initiative, have increased FI from 10.89% in 2015 to 52.18% in 2023 ( Arebo et al., 2024 ). Yet, whether these advances enhance stability remains uncertain. The CBE’s dominance creates a bifurcated system as state banks prioritize stability via sovereign debt, while private banks, constrained by thin margins and regulatory asymmetries, limit FI expansion. Negative real returns undermine savings mobilization, while rural exclusion and speculative urban lending lower the threshold at which FI shifts from stabilizing to destabilizing. Hence, this study employs bank-level data to offer appropriately tailored policy implication aimed at enhancing bank stability and FI in Ethiopia. 3. Methods 3.1 Source and sample of data Commercial banking institutions in Ethiopia are the most dominant and primary point of access to essential financial services. Based on the data compiled from NBE financial stability report (2024) , commercial banks hold for 91.2% of total assets, 97.8% of deposits, 93.9% of credit, and 76.1% of equity in the financial sector, as of June 30, 2023. In light of this dominance, the study focuses on commercial banks but due to data availability concern and the newness of other banks, the researchers focuses on 17 commercial banks. Data for the study sourced from various reliable institutions, like National Bank of Ethiopia (NBE), Commercial banks (CBs) annual report, and World Bank (WB) covering the period 2015-2023. 3.2 Construction and identification of variables 3.2.1 Dependent variables Different studies used different indicators to measure bank stability ( Čihák et al., 2016 ; Damane & Ho, 2024 ). In this research, Z-score is used as a measure of bank stability, following established literature (e.g., Damrah et al., 2023 ; Koudalo & Toure, 2023 ; Barik & Pradhan, 2021 ; Sethy & Goyari, 2022 ; Vo et al., 2020 ; Ahamed & Mallick, 2019 ). While the Z-score may emphasize profitability, it remains a widely used proxy for bank distance-to-default due to its comprehensiveness, simplicity, and data availability ( Ha & Nguyen, 2023 ). Due to constraints in risk-related data, this study focuses exclusively on the Z-score. Z-score is valued for its ability to indicate bank insolvency risk, measured as the inverse of the probability of insolvency, reflecting the likelihood that a bank’s assets may not cover its liabilities ( Koudalo & Toure, 2023 ). Higher returns on assets and greater capitalization improve stability, while lower figures suggest increased risk ( Damrah et al., 2023 ). This score, calculated from return on assets, volatility, and leverage ( Damrah et al., 2023 ; Vo et al., 2020 ), is constructed in this study as follows: Z − score it = ROA it + EQA it sd ( ROA ) it Where: ROA represents the return on assets, EQA denotes the ratio between bank’s total equity and total assets and Sd stands with standard deviation. 3.2.2 Independent variables Measuring FI is essential to support evidence-based policy decisions ( Sarma, 2016 ; Nguyen, 2021 ). Accurate measurement reveals gaps and opportunities for expanding FI ( Demirgüç-Kunt et al., 2020 ). However, relying on a single factor can be misleading ( Sarma, 2008 ; Nguyen, 2021 ). Composite indices offer a more comprehensive view by integrating multiple dimensions, enabling better comparisons across time and regions ( OECD, 2008 ). These indices capture the multifaceted nature of FI (Mishra, 2007). This study constructs a multidimensional FI index using two-stage PCA, combining10 convensional indicators and 5 digital indicators (see Table 1 ). Table 1. Overview of indicators and data sources used in the study. Variables Notation Definition Sources Studies Bank stability (Dependent variable) Bank Z-Score ZS Computes the buffer of a state’s banking system with the volatility of those returns. NBE Damrah et al., 2023 ; Koudalo & Toure, 2023 ; Barik & Pradhan, 2021 ; Sethy & Goyari, 2022 ; Vo et al., 2020 ; Ahamed & Mallick, 2019 Financial inclusion indicators (Independent variable ) Convensional Availability BPC No of Branches (per 100,000 adults) NBE; WB Damrah et al., 2023 ; Hua et al., 2023 ; Gharbi & Kammoun, 2023 ; Jima & Makoni, 2023 ; Jungo et al., 2022 ; Barik & Pradhan, 2021 ; Ismael & Ali, 2021 ; Kebede et al., 2021 ; Nguyen, 2021 ; Sha’ban et al., 2020 ; Vo et al., 2020 ; Le et al., 2019 ; Ahamed & Mallick, 2019 ; Camara & Tuesta, 2017 Convensional Availability BAC No of Branches (per 1000 km 2 ) NBE; WB Convensional Availability APC No of ATMs (per 100,000 adults) NBE; WB Convensional Availability AAC No of ATMs (per 1000 km 2 ) NBE; WB Convensional Availability PPC No of PoSs (per 100,000 adults) NBE; WB Convensional Availability PAC No of PoSs (per 1000 km 2 ) NBE; WB Digital Availability APD No of agents (per 1,000 adults) NBE; WB Digital Availability AAD No of agents (per 1,000 km 2 ) NBE; WB Digital Accessibility MPD No of mobile active users (per 1,000 adults) NBE; WB Digital Accessibility IPD No of internet active users (per 1,000 adults) NBE; WB Digital Accessibility WPD No of mobile money (wallet) users (per 1,000 adults) NBE; WB Convensional Usage DPC Depositors with banks (per 1,000 adults) CBE; WB Convensional Usage APC No of debit cards per 1,000 adults. NBE; WB Convensional Usage LGDPC Outstanding loans and advances (% of GDP) NBE Convensional Usage DGDPC Outstanding deposits (% of GDP) NBE Control variables Loan to Deposit ratio LDR Indicates how much of the bank's deposit base is being used for lending. NBE Muhammed et al., 2024 ; Kulu & Bondzie, 2024 ; Bod’a & Zimková, 2021 ; Hakim, 2017 Provision to Loan PL The loan loss provision ratio represents the funds set aside to cover expected credit losses. NBE Ha & Nguyen, 2023 ; Hua et al., 2023 ; Koudalo & Toure, 2023 ; Barik & Pradhan, 2021 ; Ahamed & Mallick, 2019 ; Chen et al., 2019 Natural logarithm of Total Asset lnTA Provides a comprehensive measure of the bank's financial strength and capacity, reflecting the aggregate value of its economic resources available for generating revenue and supporting operations. NBE Damrah et al., 2023 ; Jungo et al., 2022 ; Ramzan et al., 2021 ; Ahamed & Mallick, 2019 ; Vo et al., 2020 ; Ali & Puah, 2018 ; Beck et al., 2013a ; Gupta & Kashiramka, 2020 Capital adequacy ratio CAR Assesses a bank's ability to absorb potential losses and sustain operations during financial stress, ensuring it maintains sufficient capital to cover its risks and support continued stability NBE Hua et al., 2023 ; Jungo et al., 2022 ; Kebede et al., 2021 ; Anarfo et al., 2020 ; Vo et al., 2020 Income Diversification IND The non-interest income to total income ratio insight into the diversification of a bank's income streams beyond traditional interest-based revenue. NBE Ahamed & Mallick, 2019 ; Sanya & Wolfe, 2011 ; Elsas et al., 2010 Operational efficiency management EF It refers to the practices and strategies employed to optimize a bank's operational processes, reduce costs, and enhance productivity. NBE Damrah et al., 2023 ; Ahamed & Mallick, 2019 ; Beck et al., 2013 ; Shahriar et al., 2022 Real lending interest rate RLIR Inflation adjusted lending interest rate, i.e., lending interest rate minus inflation rate NBE Koudalo & Toure, 2023 ; Anthony-Orji et al., 2022 ; Atellu & Muriu, 2022 ; Siddik & Kabiraj, 2018 GDP Growth Rate GDP Annual percentage change in gross domestic product NBE Damrah et al., 2023 ; Ha & Nguyen, 2023 ; Koudalo & Toure, 2023 ; Oanh et al., 2023 ; Sethy & Goyari, 2022 ; Vo et al., 2020 ; Beck et al., 2013 3.2.3 Control variables As outlined in Table 1 , the study includes several bank-specific and macroeconomic control variables, including an index for operational efficiency. While prior studies ( Damrah et al., 2023 ; Jungo et al., 2022 ; Sha’ban et al., 2020 ; Beck et al., 2013 ) relied on overhead cost as efficiency measure, this study tailors efficiency assessment considering Ethiopia’s deposit-driven banking model. Traditional cost-to-income ratios overlook key operational dynamics, prompting the use of Data Envelopment Analysis (DEA) to develop a more comparable efficiency measure. Non-parametric index is used to drive efficiency using an output-oriented Constant Returns to Scale (CRS) through Data Envelopment Analysis (DEA). The choice of CRS is justified by the structure of the Ethiopian banking industry. Ayalew & Xianzhi (2017) , highlight that Ethiopian banks operate within a homogeneous regulatory framework with limited competition. Most banks in Ethiopia are subject to similar capital requirements, operational constraints, and government policies, which result in a uniform relationship between inputs and outputs across banks. Despite Rao & Lakew (2012) suggesting that managers in Ethiopian banks have more control over inputs than outputs, most banks prioritize maximizing profits through efficient use of inputs. Thus, assuming out-put oriented CRS provides a realistic framework for comparing efficiency, as banks are expected to scale their operations proportionally regardless of size, making it suitable for long-term efficiency assessments. In this study, salary and benefits, provisions, general expenses, branches, and deposits are treated as inputs, while net interest income and non-interest income serve as outputs. Using the model by Charnes et al. (1978) under CRS, the efficiency score θ is calculated as the ratio of weighted sum of outputs to inputs. Efficiency ( θ ) = ∑ r = 1 s u r Y r j ∑ i = 1 m v i X i j ≤ 1 , j = 1 , 2 , … , n , Where ( θ ) = efficiency score of bank j , Y r j = amount of output r produced by bank j , X i j = amount of input i used by bank j , u r = weight assigned to output r , v i = weight assigned to input i , s = number of outputs, m = number of inputs, n = number of banks (decision-making units) being evaluated. Additionally, the analysis includes control variables such as income diversification, capital adequacy ratio, provisions to non-performing loans, loan-to-deposit ratio, and total assets. Macroeconomic variables include the real lending interest rate and GDP growth rate. 3.3 Financial inclusion composite index development strategy PCA is employed to construct an index that effectively reduces data dimensionality while preserving much information ( Tram et al., 2023 ; Nguyen, 2021 ; Hair et al., 2019 ; Sha’ban et al., 2020 ; Camara & Tuesta, 2017 ). It is particularly effective for large, multivariate datasets, addressing challenges like multicollinearity, computational inefficiency, and redundancy by creating uncorrelated variables that maximize variance ( Kyriazos & Poga, 2023 ; Mavungu, 2023 ; Jolliffe & Cadima, 2016 ). Compared to alternative methods, PCA offers several advantages. First, despite non-parametric approaches like Sarma (2008) model, which often rely assigning weights on researcher’s experience ( Tram et al., 2023 ; Camara & Tuesta, 2017 ), PCA adapts to changes in data structure ( Decancq & Lugo, 2013 ), avoiding the pre-assignment of weights before data collection ( Chen et al., 2019 ). Second, while entropy weighting is objective, studies show it is overly sensitive to minor data fluctuations than PCA ( Chen et al., 2023 ; Wu & Wang, 2022 ), leading to unstable weights. Additionally, entropy weighting has limited adoption in FI empirical studies, which undermines its comparability. Third, compared to parametric methods like Confirmatory Factor Analysis (CFA), PCA enhances objectivity by not requiring subjective decisions on factor structure ( Tram et al., 2023 ; Camara & Tuesta, 2017 ; Ismael & Ali, 2021 ; Jolliffe & Cadima, 2016 ; Steiger, 1979 ), which may differ across time and space. Normalization is essential for comparing indicators with varying units and ranges. Common methods include ranking, z-score standardization, min-max rescaling, and logarithmic transformation ( Carrino, 2015 ; Freudenberg, 2003 ; OECD, 2008 ). In this study, the min-max ( MMY ) approach is used to normalize indicators to a scale of 0 to 1, where 0 represents exclusion and 1 represents inclusion. MMY = Y i − Y min Y max − Y min , Where Y min , minimum value, Y max , maximum value. Traditional single-level multivariate analysis often fails to address nested data structures due to its assumption of independent and identically distributed (i.i.d) observations, potentially missing within group information ( Yang et al., 2022 ). To mitigate this, a multi-level framework is employed, which addresses the hierarchical nature of the data, enhancing analytical precision ( Yang et al., 2022 ; Hox, 2013 ). Additionally, single-stage PCA may disproportionately weight indicators with unequal variances. By generating sub-indices within each dimension separately before combining them, the multilevel approach provides a more balanced and accurate composite index ( Ismael & Ali, 2021 ; Camara & Tuesta, 2017 ; Nagar & Basu, 2002 ). 3.3.1 First-stage analysis Table 2 shows the results of the first-stage PCA. To ensure the suitability of PCA, the Kaiser–Meyer–Olkin (KMO) measure and Bartlett’s test of sphericity are performed. These tests confirm that the sample size is adequate and the indicators are sufficiently intercorrelated ( Ismael & Ali, 2021 ; Taherdoost et al., 2014 ). A KMO value of 0.5 or higher and a statistically significant chi-square in Bartlett’s test (1950) indicate that factorization is appropriate ( Hair et al., 2019 ). As reported in Table 2 , all components meet these criteria (KMO ≥ 0.5 and p-value < 0.05), supporting the use of PCA for FI index development. Additionally, internal consistency was measured using a reliability test. According to Kline (2015) , a Cronbach’s alpha value above 0.6 is acceptable for developing scales. The obtained Cronbach’s alpha of 0.9721, as shown in Table 2 , exceeds this threshold, indicating excellent internal consistency and enhancing the reliability of the data. Table 2. First stage PCA result. Estimation of PC and eigenvalue of sub-indices of TFI and DFI Component Eigenvalue Difference Explained variance Availability TFI Comp1 5.4682 5.1268 0.9114 Comp2 0.3415 0.1566 0.0569 Comp3 0.1849 0.1801 0.0308 Comp4 0.0048 0.0043 0.0008 Comp5 0.0004 0.0002 0.0001 Comp6 0.0003 0 Availability DFI Comp1 1.9997 1.9994 0.9999 Comp2 0.0003 0.0001 Accessibility DFI Comp1 2.0686 1.2765 0.6895 Comp2 0.7921 0.6528 0.264 Comp3 0.1373 0.0464 Usage DFI Comp1 3.4725 2.992 0.8681 Comp2 0.4804 0.443 0.1201 Comp3 0.0374 0.0278 0.0094 Comp4 0.0096 0.0024 Scoring coefficients for orthogonal varimax rotation (weights) and test results Dimensions Indicators Comp1 Unexplained variance Normalized weights KMO Sphericity test Cronbach alpha Convensional availability BP 0.4146 0.06 0.16927 0.6974 χ 2 (15) = 3347.798 (P = 0.000) 0.9721 BA 0.4105 0.0786 0.16759 0.6875 AP 0.4112 0.0753 0.1679 0.6929 AA 0.4078 0.0908 0.16649 0.6851 PP 0.3983 0.1324 0.16263 0.6931 PA 0.4069 0.0948 0.16612 0.7104 Digital availability AP 0.7071 0.0001 0.5 0.5 χ 2 (1) = 1,119.314 (P=0.000) AA 0.7071 0.0001 0.5 0.5 Digital Accessibility MP 0.6382 0.1574 0.375736 0.537 χ 2 (3) = 221.805 (P = 0.000) IP 0.4067 0.6578 0.239446 0.7997 WP 0.6536 0.1162 0.384818 0.5332 Convensional usage DP 0.4691 0.236 0.234706 0.5593 χ 2 (6) = 1,111.108 (P = 0.000) AP 0.5195 0.0627 0.259963 0.6725 LGDP 0.4978 0.1396 0.249065 0.5795 DGDP 0.5121 0.0892 0.256266 0.654 Hair et al. (2019) deem an explained variance (EV) of 60% or higher as acceptable. Table 2 shows that PC1 captures a significant portion of the variance in the availability and usage dimensions (91.1% and 86.8%, respectively), confirming their substantial role in FI index development. For digital inclusion, PC1 explains nearly 99.9% of the variance in availability, indicating its dominance. As well, PC1 explains 69% of the variance in accessibility, highlighting that while both dimensions are important, they contribute differently to the FI index. Based on Table 2 first-stage PCA result, the following result is built for each indicators, The dimensions of “availability”, and “usage” of the convensional sub-index is; CAvailability it = 0.1693 BPC it + 0.1676 BAC it + 0.1679 APC it + 0.1665 AAC it + 0.1626 PPC it + 0.1661 PAC it + υ it CUsageC it = 0.2347 DCPC it + 0.26 APC it + 0.2491 DGDPC it + 0.2563 LGDPC it + ε it The analysis reveals that branch availability has the highest relative weight compared to ATMs and PoS machines in both demographic and geographic contexts, emphasizing the crucial role of physical branches in Ethiopia. This finding supports Kebede et al. (2021) and highlights the continued importance of physical branches due to factors such as lower financial literacy, which necessitates in-person interactions. Within the usage dimension, deposit accounts (0.26) hold the highest weight, followed by the deposit to GDP ratio (0.2563), loan to GDP ratio (0.2491), and debit card penetration (0.2347). This underscores the current focus on deposit mobilization in Ethiopia, which collectively emphasizes the sector’s drive to encourage savings. The dimensions of “Availability”, and “Accessibility” of the digital sub-index is given as follows: D AvailabilityD it = 0.5 APD it + 0.5 AAD it + € it DAccessibilityD it = 0.3757 MBPD it + 0.2395 IBPD it + 0.3848 WPD it + € it In digital availability, agency banking indicators (APD and AAD) have equal weights of 0.5, reflecting their equal importance. For digital accessibility, mobile money wallets have the highest weight (0.3848), followed by mobile banking penetration at 0.3757 and internet banking penetration at 0.2394. This indicates that mobile money is the preferred digital financial access method for the general population, contrasting with internet banking, which is primarily used by elitecustomers. This finding aligns with the observation that Ethiopian banks focus internet banking services on premium clients. 3.3.2 Second-stage analysis Table 3 confirms that the KMO measure exceeds the recommended threshold of 0.5 ( Hair et al., 2019 ), and sphericity test is highly significant (p-value < 0.0001). The first principal component accounts for 80.07% of the total variance, indicating that only 19.97% of the variance remains unexplained. This result confirms the adequacy of the PCA extraction, as supported by Hair et al. (2019) . Among four components, only one has an eigenvalue greater than 1, which is retained for constructing the FII. The derived FII is expressed as follows: IFI = 0.2625 Y i a t + 0.2616 Y i u t + 0.2254 Y i a d + 0.2505 Y i p d + ℮ i Table 3. Second-stage PCA result. Estimation of PC and eigenvalue of sub-indices of TFI and DFI Component Eigenvalue Difference Proportion Cumulative Comp1 3.20293 2.67426 0.8007 0.8007 Comp2 0.528673 0.281266 0.1322 0.9329 Comp3 0.247407 0.226421 0.0619 0.9948 Comp4 0.0209866 0.0052 1 Scoring coefficients for orthogonal varimax rotation (weights) and test results Indicators Comp1 Unexplained Normalized weights KMO Sphericity test Availability 0.524 0.1205 0.2625 0.5948 χ 2 (6) = 709.297 (p = 0.000) Usage 0.5223 0.1263 0.2616 0.6121 Availability 0.45 0.3515 0.2254 0.6663 Accessibility 0.5002 0.1987 0.2505 0.6991 This equation indicates that convensional availability (0.2625) has the highest weight, underscoring the critical role of infrastructure development in enhancing FI. This aligns with findings from Nguyen (2021) and Gharbi and Kammoun (2023) , emphasizing the need for robust financial infrastructure alongside efforts in financial literacy and user adoption. Usage (0.2616) is the second most significant dimension, reflecting the importance of account usage in FI. Digital accessibility (0.2505) ranks third, highlighting the increasing impact of digital tools. Agency banking, with the lowest weight (0.2254), suggests that while digital solutions are cost-effective, more targeted interventions are required to address the needs of vulnerable populations, including women, rural residents, and those with lower literacy levels. To verify the strength of the researchers used the overall average of FI of the country and measured the correlation between the saving and real lending interest rate and newly developed FI index. The Pearson correlation results presented in Table 4 denotes p-values of 0.0000 and 0.0002, respectively, represents that the findings are significant at 1% level (0.9617 for saving) and (-0.9391 for real lending interest rate). The direction of the correlations aligns with theoretical expectations. Real lending interest rates are negatively correlated with FI, as high rates make loans more expensive and discourage access, particularly for low-income populations ( Gharbi & Kammoun, 2023 ; Uddin et al., 2017 ). Conversely, in relation to deposits, a positive higher FI scores are associated with in-creased savings, likely due to a greater number of households having access to financial institutions and associated saving products ( Gharbi & Kammoun, 2023 ). These robust correlations provide strong evidence for the construct validity of the newly developed FI index. Table 4. Pearson correlation between FI index, saving and real deposit interest rate. FII FII Pearson Correlation 1 Saving Pearson Correlation 0.9617 *** Sig. (bilateral) 0.0000 RLIR Pearson Correlation -0.9391 *** Sig. (bilateral) 0.0002 * p < 0.05. ** p < 0.01. *** p < 0.001. 3.4 Model specification This study adopts an empirical exploration, employing a panel methodology, to delve into the cross-sectional and longitudinal dynamics of evaluating the impact of FI on bank stability —within the period 2015-2023. The empirical model for examining the impact of FI on bank stability, the researchers estimated this dynamic panel model: ZS it = β 0 + β 1 IFI it + β 2 LDR it + β 3 PL it + β 4 lnTA it + β 5 CAR it + β 6 EF it + β 7 IND it + β 8 RLIR it + β 9 GDP it + ε it Where, ZS it is the measure of bank stability, represented by Z-score, IFI it , the index of FI extracted from two staged PCA, LDR it , represents the loan to deposit ratio, PL it , refers to provision to loan ratio, lnTA it , indicates the natural logarithm of total asset, CAR it , denotes risk weighted capital adequacy ratio, EF it , refers to the efficiency ratio extracted from DEA approach, IND it , refers to non interest income to total income ratio, RLIR it , represents inflation adjusted lending interest rate, GDP it , refers to the gross domestic product growth rate, ε it , refers error term, β 0 , refers to the constant term,and β 1 to 9 , represents the slope of the independent variables. i = 1.. N & t = 1.. T, denotes to cross-section & time, respectively. 3.4.1 Baseline analysis applying two-step system GMM Traditional FE and RE models, while valuable, often struggle to address endogeneity concerns stemming from omitted variables, measurement errors, reverse causality, and time-invariant unobserved heterogeneity in panel data ( Hill et al., 2020 ; Leszczensky & Wolbring, 2022 ). These issues are exacerbated by the presence of lagged dependent variables and endogenous regressors, leading to biased and inconsistent estimates ( Leszczensky & Wolbring, 2022 ; Bellemare et al., 2017 ). In the context of dynamic panel data, particularly “small T, large N” panels, selecting an appropriate estimation technique is critical for obtaining reliable and efficient results ( Roodman, 2009 ) The Arellano and Bond (1991) estimator is particularly effective in addressing dynamic dependent variables and non-strictly exogenous regressors. By differencing the regressors to eliminate fixed effects and applying GMM, it mitigates potential biases ( Roodman, 2009 ). The system GMM estimator, introduced by Arellano & Bover (1995) and Blundell & Bond (1998) , extends this by assuming the first differences of the instruments are uncorrelated with fixed effects, thus incorporating additional instruments and improving estimation efficiency ( Jima & Makoni, 2023 ; Bun & Windmeijer, 2010). System GMM constructs a two-equation system, original levels and transformed differences, leveraging both levels and differences of the instruments ( Roodman, 2009 ). This approach effectively addresses dynamic panel bias, which often distorts small-sample properties and yields unstable estimates when varied instrument sets are employed ( Blundell & Bond, 2023 ; Windmeijer, 2005 ). As noted by Morgan and Pontines (2017) , system GMM not only addresses endogeneity bias but also remains consistent and efficient in the presence of heteroskedasticity and autocorrelation within individuals. Our results, as presented in Table 6 , confirm the existence of heteroskedasticity and autocorrelation within the model. The system GMM approach is particularly effective in addressing serial correlation and unobserved heterogeneity ( Vo et al., 2020 ; Roodman, 2009 ). Therefore, employing GMM to overcome these issues aligns with previous empirical studies ( Jima & Makoni, 2023 ; Vo et al., 2020 ; Ahamed & Mallick, 2019 ; Morgan & Pontines, 2017) . Blundell et al. (2001) and Bond et al. (2001) highlight significant improvements when dealing with models that include a lagged dependent variable along with other explanatory variables. To that end, this study refines the previous model into a dynamic form, ensuring more robust and consistent estimations. To test the first hypothesis, the specified System-GMM model is as follows: ZS it = α i + φi . ZS i , t − 1 + ∑ 1 n β it X it + ∈ it In this equation, ZS it represents the dependent variable, α i is the individual-specific effect, φ is the coefficient for the lagged dependent variable, β it are the coefficients for the explanatory variables X it , and ∈ it is the error term. The System GMM estimator enhances robustness and efficiency by using both difference and level moment conditions to address endogeneity and ensure reliable inference ( Sebki, 2021 ; Soto, 2009 ; Presbitero, 2008 ). To handle heteroscedasticity and serial correlation, a two-step System GMM procedure with a consistent weighting matrix from one-step residuals was used ( Davidson & MacKinnon, 2004 ). Although two-step GMM estimates can have downward-biased standard errors ( Presbitero, 2008 ), the small-sample correction by Windmeijer (2005) was applied to improve efficiency, making it preferable over one-step robust GMM ( Roodman, 2006 ). Consequently, the two-step robust System GMM estimator was thus selected for further analysis. To prevent overfitting, the maximum number of instrument lags was constrained. The AR(2) and Hansen tests were conducted to validate the absence of misspecification and the appropriateness of the instrumental variables in the GMM estimation. The modeling strategy, illustrated in Figure 2 , follows a rigorous sequential process to ensure estimator robustness. Initial pooled OLS and fixed effects (FE) estimations establish bounds for the autoregressive parameter (φ), with OLS serving as the upper bound and FE as the lower bound. System GMM is selected over difference GMM when Diff-GMM estimates fall near or below the FE bounds, mitigating weak instrument bias (Azimi, 2022; Bond et al. 2001 ; Bond, 2002 ; Presbitero, 2006 , 2008 ). The two-step Sys-GMM estimator is employed with Windmeijer (2005) -corrected standard errors to address heteroskedasticity and serial correlation, enhancing efficiency over one-step alternatives ( Roodman, 2009 ). Figure 2. Modeling strategy 3.4.2 Non-linearity applying two-step system GMM To derive deeper insights, this study examines the potential non-linear relationship between FI and bank stability. A growing body of literature suggests that the FI-stability nexus may exhibit an inverted U-shaped pattern, where moderate levels of financial inclusion enhance stability, but excessive inclusion may introduce risks ( Sebai et al., 2025 ; Talbi & Sebai, 2025 ; Khémiri et al., 2024 ; Sebai & Talbi, 2024 ; Hua et al., 2023 ). To empirically test this hypothesis, we adopt a standard quadratic specification of FI’s impact on bank stability: ZS it = α i + γl . ZS i , t − 1 + β 1 IFI it + β 2 IFI it 2 + ∑ 1 n β it X it + ∈ it Where, ZS it , denotes bank stability for bank i at a time t , ZS i , t − 1 , represents one year lag of bank stability, IFI it , reveals FI score of bank i at a time t , IFI it 2 , captures the non-linear (quadratic) effect of FI, X it , is the vector of control variables, α i , is the individual-specific effect, γ , is the coefficient for the lagged dependent variable, β it , are the coefficients for the explanatory variables ∈ it , is the error term. Building on prior research ( Anarfo et al., 2020 ; Hua et al., 2023 ), this study further investigates the moderating role of capital adequacy ratio (CAR) in shaping the FI-stability relationship. A well-capitalized banking system may absorb risks associated with financial deepening, mitigating any adverse effects of excessive inclusion. To examine this interaction effect, the baseline model is extended as follows: ZS it = α i + γl . ZS i , t − 1 + β 1 IFI it + β 2 IFI it 2 + β 3 IFI it ∗ CAR it + ∑ 1 n β it X it + ∈ it Here, ( IFI it 2 ∗ CAR it ) , captures the interaction between the squared FI term and CAR. A significant coefficient for, β 3 , would indicate that capital adequacy conditions influence the extent to which FI impacts banking stability. 3.4.2.1 Lind and Mehlum (2010) U-test for non-linearity Traditional non-linear models validate an inverted U-shaped or U-shaped relationship by rejecting the null hypothesis when the original and squared terms exhibit opposite signs. However, this approach can be misleading if the true relationship is convex but monotonic, potentially resulting in a false quadratic interpretation ( Law et al., 2017 ). To address this, Lind and Mehlum (2010) extend a U-test for a U-shaped pattern by evaluating whether the slope is negative at lower values and positive at higher values within the observed range. The U-test verifies these conditions: β 1 + β 2 IFI l < 0 < β 1 + β 2 IFI m Where ( IFI l ) ​ and ( IFI m ) , represent the lower and upper bounds of financial inclusion within the sample. If these conditions hold, the relationship is confirmed as inverted U-shaped. 4. Results and discusion 4.1 Results 4.1.1 Descriptive analysis Table 5 presents the descriptive summary for the variables used to examine the impact of financial FI on bank stability. The analysis is based on a sample of 153 observations, covering 8 years (2015-2023) across 17 commercial banks (all (17) commercial banks operationalized since 2015 are taken for further analysis). The table provides key details, including the mean, standard deviation, and the minimum and maximum values for each variable. Table 5. Summary analysis. Variable Obs Mean Std. Dev. Min Max ZS 153 32.403 15.712 8.972 80.117 IFI 153 0.059 0.112 0.002 0.584 LDR 153 0.963 0.089 0.533 1.159 PL 153 0.007 0.010 -0.001 0.087 lnTA 153 10.155 1.320 7.042 14.082 CAR 153 0.188 0.089 0.084 0.958 EF 153 0.893 0.098 0.624 1.000 IND 153 0.284 0.116 0.006 0.570 RLIR 153 -0.036 0.083 -0.196 0.056 GDP 153 0.079 0.015 0.061 0.104 4.1.2 Empirical analysis technique 4.1.2.1 Analysis of ordinary least-square regression (OLS) Using fixed or random effects models in OLS regression is common for addressing unobserved heterogeneity and simultaneous causality in panel data ( Kumar et al., 2022 ). Fixed effects handle time-invariant characteristics within firms ( Schultz et al., 2010 ), while random effects reduce variability by pooling data and accounting for differences across firms and time ( Kumar et al., 2022 ). The Hausman test, which checks for the correlation between unique errors and regressors, guides the choice between these models ( Kumar et al., 2022 ; Greene, 2003 ). Our results indicate that the fixed-effects model is the correct choice, as shown in Table 9 . To test for autocorrelation and heteroskedasticity, the Wooldridge, modified Wald, and Breusch-Pagan (BP) tests were employed. Results in Table 6 reveals, both problems were detected. However, the correlation matrix and Variance Inflation Factor (VIF) results in Table 7 , with all VIF values lessthan 10, suggest that multicollinearity is not a concern. Following Vo et al. (2020) and Ahamed and Mallick (2019) , robust clustered standard errors were applied to address these issues, as outlined in Table 9 . Table 6. Heteroscedasticity and autocorrelation test. Tests Wooldridge test Modified Wald test Breusch-Pagan (BP) test Type Serial correlation Heteroscedasticity Heteroscedasticity F-test Chi 2 test Chi 2 test Sig level F(1,16)=30.970 (p=0.0000) χ 2 (17)=112.98 (p=0.0000) χ 2 (1)=7.54 (p=0.0060) Table 7. Multicollinearity test. Variables VIF 1/VIF ZS IFI LDR PL TA CAR EF IND RLIR IFI 3.94 0.254 -0.29 LDR 1.43 0.701 -0.02 0.423 PL 1.12 0.894 -0.35 0.262 0.215 lnTA 5.69 0.176 -0.16 0.718 0.364 0.220 CAR 1.26 0.791 -0.1 0.045 -0.125 -0.007 -0.209 EF 1.36 1.3 0.771 0.203 0.323 0.082 0.202 0.012 IND 2.41 0.414 -0.07 -0.253 -0.282 -0.076 -0.647 0.417 -0.039 RLIR 3.03 0.33 0.071 0.000 -0.160 -0.138 -0.462 0.255 -0.308 0.446 GDP 2.32 0.431 0.071 0.000 -0.170 -0.112 -0.395 0.230 -0.195 0.460 0.736 4.1.3 GMM analysis 4.1.3.1 Stationary test Conducting a unit root test is crucial to confirm stationarity of variables, thereby avoiding the risk of spurious findings ( Breitung & Pesaran, 2005 ). Although a dynamic panel approach is typically suited for variables integrated at level or first difference, it is crucial to ensure none of the variables is integrated at a higher order, such as I(2) ( Pesaran & Smith, 1995 ). To verify stationarity, we employed the Levin-Lin-Chu (LLC) and Harris-Tzavalis (HT) unit root tests across both I(0) and I(1) levels, as shown in Table 8 . The LLC test confirms that all variables, are stationary at level. Similarly, the HT test shows that only total assets achieve stationarity at first difference. Since all variables are either stationary at level or first difference, applying the GMM method is appropriately validated. Table 8. Stationary test result: LLC and HT. LLC HT Variables T-statistics Order T-statistics Order ZS (7.1564) *** I(0) 0.5428 * I(0) IFI (6.7882) *** I(0) (0.0528) *** I(0) LDR (3.7723) *** I(0) 0.1663 *** I(0) PL (17.1597) *** I(0) 0.1221 *** I(0) lnTA (6.7186) *** I(0) 0.0677 *** I(1) CAR (8.2427) *** I(0) (0.0436) *** I(0) EF (2.9716) ** I(0) 0.425 *** I(0) IND (3.8704) *** I(0) (0.2079) *** I(1) RLIR (8.5431) *** I(0) (0.0852) *** I(0) GDP (5.8930) *** I(0) 0.2165 *** I(0) * p < 0.05. ** p < 0.01. *** p < 0.001. Following Bond et al.’s (2001) recommendation, the Pooled OLS coefficient served as an upper bound, while the Fixed Effects coefficient acted as a lower bound. Given that the Difference GMM coefficients (0.347 and 0.328) were significantly lower than the Fixed Effects coefficient (0.412) and well below the Pooled OLS coefficient (0.947), as presented in Table 9 , the System GMM approach was deemed appropriate. Table 9. Empirical result of the study. Variables (1) Robust Fixed Effect (2) Robust Pooled OLS (3) Robust One-step Difference GMM (4) Robust Two-step Difference GMM (5) Robust One-step System GMM (6) Robust Two-step System GMM l.ZS 0.412 *** 0.947 *** 0.347 ** 0.328 0.798 * 1.155 *** (5.62) (55.49) (2.15) (1.15) (2.08) (3.07) IFI -8.811 -2.890 -10.41 -9.382 49.93 ** 84.07 ** (-0.99) (-0.52) (-1.00) (-0.65) (2.85) (2.60) LDR 10.82 *** 1.010 11.51 *** 9.283 -19.10 -55.46 (3.43) (0.26) (2.95) (1.74) (-1.07) (-1.73) PL -69.73 ** -63.76 ** -70.40 ** -63.67 * -125.7 17.66 (-2.71) (-2.27) (-2.77) (-1.96) (-0.42) (0.07) lnTA -2.249 ** 0.321 -2.342 ** -1.937 * -8.085 *** -10.03 ** (-2.30) (0.65) (-2.39) (-1.83) (-3.04) (-2.66) CAR 3.488 0.747 3.566 1.414 10.68 -37.80 (0.71) (0.45) (0.69) (0.18) (0.41) (-0.99) EF 13.61 *** 7.436 ** 14.04 *** 13.21 * 15.35 26.24 * (3.56) (2.60) (3.65) (2.00) (1.46) (2.00) IND 6.825 * 1.230 7.208 * 5.309 -71.81 -101.7 * (1.80) (0.41) (1.80) (1.09) (-1.39) (-1.94) RLIR -11.38 -6.605 -10.55 -6.237 -32.19 * -33.46 (-1.54) (-1.26) (-1.41) (-0.64) (-1.99) (-1.42) GDP 9.593 29.75 7.668 4.417 105.3 229.5 * (0.42) (1.05) (0.35) (0.19) (1.38) (2.12) _cons 16.42 * -12.12 99.98 ** 138.4 ** (1.86) (-1.58) (2.92) (2.44) N 136 136 119 119 136 136 Groups 17 17 17 17 17 Instruments - - 16 16 16 16 AR(2) test - - -1.46 (0.144) -1.38 (0.167) -0.12 (0.908) -0.71 (0.479) Hansen test - - 10.55 (0.103) 10.55 (0.103) 4.12 (0.532) 1.13 (0.951) R-Squared 0.7632 0.9665 P-Value F(10,16) = 68.14 (p=0.000) F(10,125) = 413.07 (p=0.000) F(10,17) = 13.59 (p=0.000) F(9,143) = 8.49 (p=0.000) F(10,16) = 2104.9 (p=0.000) F(10,16) = 592.07 (p=0.000) * p < 0.1. ** p < 0.05. *** p < 0.01. Beyond estimating the mean impact of FI on bank stability using two-step robust system GMM, this study investigates potential non-linearity in this relationship. To rigorously investigate the presence of a non-linear effect, the Lind and Mehlum (2010) U-test is employed, incorporating a quadratic specification to capture possible inverted U-shaped dynamics. Furthermore, the findings presented in Table 10 highlight the moderating role of CAR in the FI–bank stability nexus. Specifically, the results illustrate the non-linearity both with and without the interaction term, providing deeper understanding of FI’s conditional effects on stability. Table 10. Non-linearity test (two step robust system GMM with and with-out interaction term). Variables (7) Non-linearity with interaction term (8) Non-linearity without interaction term l.ZS 0.212 0.240 (0.72) (0.79) FI 513.5 *** 417.8 ** (3.15) (3.14) FI^2 -731.3 ** -688.5 ** (-3.20) (-3.01) CAR 20.41 3.213 (1.41) (0.32) FI*CAR -305.9 ** (-2.24) LDR 14.00 9.522 (0.77) (0.53) PL -380.0 ** -377.0 * (-2.71) (-2.70) LnTA -12.44 *** -11.81 ** (-3.91) (-3.58) EF 21.86 * 22.11 (1.80) (1.84) IND -44.71 * -36.93 (-1.95) (-1.74) RLIR -30.23 ** -30.50 * (-2.29) (-2.31) GDP 70.02 * 58.12 (2.05) (1.73) _cons 108.3 *** 108.3 ** (4.24) (3.81) N 136 136 Groups 17 17 Instruments 17 16 AR(2) test -0.83 (p=0.405) 0.14(p=0.888) Hansen test 1.32 (p=0.857) 1.91(p=0.752) P-Value F(12,16) = 2943.73 (p=0.000) F(11,16) = 3998.22 (p=0.000) Inverse U-test ( Lind & Mehlum, 2010 ) Test components Value Significant Value Significant Turning point IFI = 0.351 IFI = 0.303 Slope at lower bound 510.03 p = 0.003 *** 414.51 p = 0.003 *** Slope at upper bound -340.63 p = 0.003 *** -386.3 p = 0.006 *** Overall test (t-value) 3.15 p = 0.003 *** 2.85 p = 0.006 *** * p < 0.1. ** p < 0.05. *** p < 0.01. 4.1.4 Causality test This research examines the dynamic causal relationship between FI and bank stability within the Ethiopian banking sector. Both the Dumitrescu and Hurlin (2012) W-statistic test and the Juodis et al. (2021) Z-bar test are used to ascertain the direction of causality between FI and bank stability. Rejection of the null hypothesis indicates a causal relationship, whereas its acceptance suggests none ( Antwi et al., 2024 ). The analysis employs a first lag, with lag selection based on the Modified Bayesian Information Criterion (MBIC) to ensure result robustness, in line with Hussain et al. (2024) and Žiković et al. (2020) recommendations for shorter time periods. 4.2 Discusion The findings reveal that the lagged value of bank stability positively effect current stability. Specifically, past levels of bank stability significantly impact present stability, as corroborated by the study of Yitayaw et al. (2023) within the Ethiopian context. The positive effect of lagged stability on current conditions underscores its validity as a reliable instrument for stability analysis, given that banks generally exhibit continuity in their stability across different periods, reflecting a trend of persistence over time. However, in column 7 and 8 ( Table 10 ), where non-linear FI terms IFI it 2 and interaction effects ( IFI it ∗ CAR it ) are introduced, the lagged term loses significance. This suggests that stability persistence is conditional on evolving financial dynamics, as non-linearity and regulatory adjustments reshape stability paths, reducing reliance on historical trends. Our findings confirm a significant positive relationship between FI and bank stability, supported by existing research ( Koudalo & Toure, 2023 ; Nguyen & Du, 2022 ; Vo et al., 2020 ; Le et al., 2019 ; Neaime & Gaysset, 2018 ; Morgan & Pontines, 2014 ). The result clearly supports hypothesis 1. Specifically, a 1% increase in FI is associated with an 84.07 unit increase in bank stability in the short run, ceteris paribus. This outcome can be attributed to several factors. First, enhanced FI strengthens bank stability by diversifying bank assets, reducing systemic and liquidity risks, and improving monetary policy transmission ( Ahamed & Mallick, 2019 ; Morgan & Pontines, 2014 ; Khan, 2011 ; Hannig & Jansen, 2010 ). It also addresses information asymmetry by allowing lenders to better assess borrowers and by providing banks with critical proprietary information ( Nguyen & Du, 2022 ), thus fostering a more resilient banking sector. Third, greater FI expands deposit bases, reducing the procyclicality risk of the banking sector ( Chinoda & Kapingura, 2024 ; Ozili, 2018 ), further reinforcing financial stability. Building on prior studies ( Sebai et al., 2025 ; Talbi & Sebai, 2025 ; Antwi et al., 2024 ; Kebede et al., 2024 ; Khémiri et al., 2024 ; Sebai & Talbi, 2024 ; Hua et al., 2023 ; Dang & Thi, 2022 ; Saha & Dutta, 2021 ; Ahamed & Mallick, 2019 ), our findings in Column 8 confirm an inverted U-shaped relationship between FI and bank stability, supporting Hypothesis 2. This indicates that while FI enhances stability up to a certain threshold, beyond that point, its impact reverses. This result aligns with studies showing a positive effect of FI on bank stability ( Sebai et al., 2025 ; Chinoda & Kapingura, 2024 ; Khémiri et al., 2024 ; Hua et al., 2023 ) but contrasts with others reporting a destabilizing effect at lower FI levels ( Talbi & Sebai, 2025 ; Antwi et al., 2024 ; Sebai & Talbi, 2024 ; Dang & Thi, 2022 ; Saha & Dutta, 2021 ). At lower bounds, FI fosters stability by mitigating asymmetric information, enabling banks to diversify their portfolios ( Chinoda & Kapingura, 2024 ; Khémiri et al., 2024 ), and enhancing the quality of bank-client relationships, which reduces risk premiums and promotes financial transparency ( Khémiri et al., 2024 ). However, at higher levels, in line with Khan (2011) and Khémiri et al., (2024) , the mass participation of low-income individuals in formal banking raises transaction and information costs, increasing adverse selection and moral hazard risks. This dynamic can trigger credit contractions and asset quality deterioration, leading to financial distress ( Pham & Doan, 2020 ). The Lind and Mehlum (2010) U-test results in Column 8 confirm this threshold effect, with the lower bound slope (414.5) exceeding the upper bound (-386.3), indicating that stability gains diminish as FI expands beyond a critical point. Specifically, incorporating a quadratic FI term (IFI 2 ) reveals a stability-maximizing threshold at IFI ≈ 30.3% (U-test, p = 0.006), contrasting with Khémiri et al. (2024) , who found destabilization only at much higher FI levels (~71.6%) in GCC economies. These findings highlight the importance of balancing financial inclusion efforts to ensure long-term banking stability, as excessive credit concentration can erode diversification benefits, necessitating prudent regulatory oversight to maintain stability beyond the optimal FI threshold. The moderating effect of the interaction ( IFI it ∗ CAR it ) shifts the inflection point from 0.30 (without interaction) to 0.35 (with interaction), confirming Hypothesis 3, that the interaction between capital adequacy and FI enhances bank stability. This indicates that stronger regulatory frameworks can improve the FI–stability relationship by mitigating financial risks and fostering transaction efficiency ( Ha & Nguyen, 2023 ). However, beyond the threshold, stability gains diminish, and the negative FI*CAR interaction suggests that higher capital adequacy does not necessarily shield banks from excessive FI risks. This could stem from diminishing capital returns, rising regulatory costs, and increased risk exposure. In Ethiopia, where government intervention influences financial allocation ( Filatie & Sharma, 2024 ), banks face unique stability risks as political priorities override market-driven risk management. Thus, while capital adequacy enhances stability in financially inclusive environments, its protective effects weaken when FI expands beyond sustainable levels. Our findings indicate that control variables such as lnTA, EF, IND, RLIR and GDP growth rate significantly affect bank stability. Larger banks exhibit decreased stability, with a 10.03 unit decline per percentage increase in total assets in the short run, ceteris paribus. This effect is evident in both non-linear analysis (see column 7 and 8). This aligns with Mirzaei et al. (2013) , who caution that excessive size amplifies systemic vulnerabilities. In Ethiopia’s concentrated banking sector, state-owned CBE dominate ~50% of assets ( NBE-FSR, 2024b ), fostering operational rigidity and reliance on implicit government guarantees. The “too-big-to-fail” (TBTF) phenomenon fosters moral hazard, encouraging excessive risk-taking ( Farhi & Tirole, 2012 ) and increasing instability due to complexities in governance and risk management ( Shahriar et al., 2022 ; Vo et al., 2020 ). This finding aligns with Vo et al. (2020) and Mu and Lin (2016) , but differing from Nguyen and Du (2022) and Ahamed and Mallick (2019) . Efficiency positively effect stability, with a 1% increase in efficiency leading to a 26.24 unit rise in stability in the short run, ceteris paribus. This effect is the same in both non-linear analysis (see column 7 and 8). Efficient banks optimize resource allocation, strengthen profitability, and enhance risk management ( Gupta & Raman, 2020 ; Mohapatra & Mohanty, 2017 ). Empirical evidence links higher efficiency to lower non-performing loans and stronger financial resilience ( Shahriar et al., 2022 ; Berger & DeYoung, 1997 ). Efficiency also bolsters market power, liquidity buffers, and long-term sustainability ( Kasman & Carvallo, 2014 ; Fiordelisi et al., 2011 ). This finding consistent with Nguyen and Du (2022) , and Ahamed and Mallick (2019) . Income diversification negatively impacts stability, with a 1% increase resulting in a 101.7 unit decrease in stability in the short run, ceteris paribus. This effect is particularly evident in model 7 but insignificant in model 8. Over-reliance on non-interest income exposes banks to systemic risks, particularly when diversification extends into unfamiliar sectors ( Carlson, 2004 ). Excessive diversification into volatile markets such as forex trading amidst chronic dollar shortages heightens asymmetric information risks ( Acharya et al., 2006 ). Mercieca et al. (2007) emphasize that diversification benefits depend on regulatory quality and market discipline. In the Ethiopian context, where banks are predominantly dependent on deposit revenue, an abrupt or poorly managed shift towards greater non-interest income might contribute to instability. This finding aligns with Nguyen and Du (2022) but differing from Ahamed and Mallick (2019) . GDP growth rate shows a positive effect on stability, with a 1% increase leading to a 229.5 unit rise in stability in the short run, ceteris paribus. This finding remains robust in non-linear analyses with interaction terms but loses significance when interaction effects are excluded. Economic expansion enhances financial stability through multiple channels. A growing economy improves borrower creditworthiness, thereby reducing default risks and strengthening bank balance sheets ( Demirgüç-Kunt & Maksimovic, 1998 ). Additionally, higher GDP growth fosters employment and business profitability, ensuring that debt obligations are met, thereby reducing non-performing loans and bolstering banking sector stability. Financial deepening associated with economic expansion further strengthens banks’ capital positions and shock-absorbing capacity ( Fosu et al., 2017 ). This finding consistent with Nguyen and Du (2022) , Vo et al. (2020) , and Ahamed and Mallick (2019) . The real lending interest rate (RLIR) exhibits a negative impact on bank stability in non-linear specifications, consistent with the findings of Anthony-Orji et al. (2022) and Atellu and Muriu (2022) . Prolonged low-interest-rate environments compress net interest margins (NIMs), compelling banks to engage in riskier lending practices to sustain profitability ( Rajan, 2006 ; Adrian & Shin, 2009 ). This “search-for-yield” behavior often leads to capital misallocation and elevated exposure to financial shocks. Furthermore, artificially low interest rates contribute to “money illusion,” distorting risk-adjusted returns and weakening credit standards ( López-Penabad et al., 2022 ; DellʼAriccia et al., 2014 ). Simultaneously, low rates undermine banks’ ability to build capital buffers through retained earnings, heightening vulnerability to liquidity constraints ( Zimmermann, 2019 ). The destabilizing effects of low interest rates are particularly pronounced in emerging markets, where financial systems exhibit structural weaknesses and heightened interconnectedness ( Beck et al., 2015 ; Calice et al., 2020 ). Interest rate repression through regulatory caps further distorts risk pricing, compelling banks to either ration credit or extend loans to subprime borrowers, thereby inflating non-performing loans ( Chen et al., 2017 ; Beck et al., 2015 ). Relatedly, Apergis et al., (2022) , highlight that inflationary pressures exacerbate systemic risks, further reinforcing the precarious balance between monetary policy and financial stability. The two-step System GMM analysis, as detailed in Table 9 and Table 10 , shows that the standard diagnostic tests are supportive of the model’s validity. The AR(2) test indicates no evidence of second-order residual autocorrelation, with (Prob > χ 2 = 0.479) (model 6), (Prob > χ 2 = 0.405) (model 7) and (Prob > χ 2 = 0.888) (model 8), thereby validating the absence of misspecification in the dynamic panel model. Similarly, the Hansen test (Prob > χ 2 = 0.951) (model 6), (Prob > χ 2 = 0.857) (model 7) and (Prob > χ 2 = 0.752) (model 8), confirms the validity of the instruments, verifying their appropriateness. The F-test (Prob > F = 0.000) for both linear and non-linear specifications demonstrates a strong goodness of fit for the model. In addition to the two-step robust System GMM results, findings from robust FE, robust Pooled OLS, robust one-step Difference GMM, robust two-step Difference GMM, and robust one-step System GMM are largely consistent. The main variable, FI, is significant in both one-step and two-step System GMM models, while the GDP growth rate is significant in the two-step robust System GMM. Overall, these results underscore the robustness of the employed models. In addition, based on the result revealed in Table 11 , the Juodis et al. (2021) test confirms that FI significantly Granger-causes bank stability at the 5% level, a result supported by the Dumitrescu and Hurlin (2012) test, which also rejects the null hypothesis. This underscores the substantial role of FI in bolstering the resilience and stability of Ethiopia’s banking sector. Additionally, reverse causality from bank stability to FI is significant at the 5% level, indicating that bank stability can predict enhancements in FI. These findings suggest that enhancing FI can improve bank stability, while a stable financial environment fosters greater FI, aligning with previous studies ( Jima & Makoni, 2023 ; Antwi et al., 2024 ). Table 11. Causality test result. Test Z-bar P-Value Direction Conclusion ZS≠IFI 7.3252 *** 95.3201 *** ZS↔IFI Reject H0 IFI≠ZS 14.3706 *** 4.3273 ** IFI↔ZS Reject H0 * p < 0.1. ** p < 0.05. *** p < 0.01. 5. Conclusion, and policy implication, limitations and future research directions 5.1 Conclusion Financial inclusiveness has increasingly become a focal point for policymakers, practitioners, and economists due to its potential to drive inclusive growth. Despite numerous efforts by policy makers and international financial institutions to bolster bank stability and inclusivity, the relationship between FI and bank stability remains contentious and inconsistent in existing literature. This study addresses this gap by examining the impact of FI on bank stability within the Ethiopian context. Using panel data from seventeen commercial banks over the period 2015-2023, the researchers employed a two-stage PCA to develop FI index based on ten convensional and five digital indicators. The effects of FI on bank stability were analyzed using a two-step robust System GMM approach while testing non-linearities via Lind and Mehlum’s (2010) U-test, complemented by Granger causality tests to determine the direction of causality between FI and bank stability. Our results from the two-stage PCA indicate that convensional availability is the most important factor in FI score, followed by convensional usage, with digital accessibility and digital availability ranking third and fourth, respectively. The System GMM analysis confirms that FI has a significant and positive effect on bank stability. However, the relationship between FI and stability is not linear. Instead, the study reveals an inverted U-shaped pattern, wherein FI contributes positively to stability up to a threshold of approximately 30.3%, beyond which its effects become destabilizing. This turning point reflects the trade-offs associated with excessive FI, as mass participation in the banking system, particularly among low-income individuals, can heighten transaction costs, exacerbate information asymmetries, and increase the likelihood of adverse selection and moral hazard. The introduction of capital adequacy as a moderating factor extends the stability-maximizing threshold to 35.1%, illustrating that stronger regulatory buffers can mitigate some of the risks associated with higher FI. However, beyond this point, capital adequacy ceases to provide stability benefits, as diminishing returns and heightened regulatory costs erode its effectiveness. Control variables such as efficiency and GDP growth rate are positively associated with bank stability, while real interest rate, total assets and income diversification exhibit negative effects. Additionally, the historical level of bank stability positively effects current stability. The Granger causality tests indicate a bi-directional relationship between FI and bank stability, suggesting that improvements in FI contribute to enhanced stability, and vice versa. This study makes three contributions to the field. First, it is the first to empirically investigate the effect of FI on banking stability in Ethiopia, addressing a critical knowledge gap in a financial landscape where FI is still in its nascent stages. Second, methodologically, (i), unlike prior studies that have predominantly relied on either traditional or digital FI indicators in isolation, this research develops a multidimensional FI index using a two-stage PCA approach, integrating ten traditional and five digital indicators. (ii), this study applies a two-step robust system GMM estimator to address endogeneity concerns and unobserved heterogeneity, thereby enhancing the reliability of the results. (iii), it pioneers the investigation of nonlinear FI-stability relationship in Ethiopia, validated through Lind and Mehlum’s (2010) U-test, a more robust approach to validating nonlinearity than conventional quadratic models; (iv), this study introduces macroprudential regulation as a moderating factor, a dimension largely overlooked in low-income economies. The findings illustrate that while capital adequacy strengthens stability at moderate FI levels, its mitigating effects diminish beyond a certain threshold, signaling the need for more adaptive regulatory frameworks. Third, in response to concerns regarding reverse causality, the study employs Dumitrescu-Hurlin (2012) and Juodis et al. (2021) Granger causality tests, providing empirical evidence on the directional nexus between FI and stability. Finally, the study extends its impact beyond academic discourse by offering contextual actionable strategies to optimize FI expansion without compromising financial stability. 5.2 Policy implication The policy implications are profound. To promote both FI and stability, policymakers should focus on expanding demographic and geographic outreach, enhancing both convensional and digital financial services. Ensuring that current stability supports future stability is also crucial. FI and bank stability are mutually reinforcing; efforts to enhance FI directly contribute to improved stability and vice versa. Consistent with the policy implication of Vo et al. (2020) , broadening FI is essential for strengthening banking sector stability in Ethiopia. Specifically, the findings of this study suggest several policy implications that should be considered. First, the identified inflection point of 35%, coupled with the moderating effect of capital adequacy, highlights that while policy interventions promoting FI up to this threshold will enhance stability, further expansion requires nuanced regulatory oversight. Banks must recognize that internal buffers such as capital adequacy may not act as perfect hedges against the risks associated with excessive FI. This is particularly critical in Ethiopia, where current FI levels remain below 0.1 for all commercial banks except CBE ( Arebo et al., 2024 ), suggesting ample room for expansion before the stability-maximizing threshold is reached. Second, expanding financial services to underserved populations not only provides banks with stable funding sources but also enhances overall sector stability and profitability. However, as financial access increases, additional risk mitigation strategies must be implemented. Echoing the recommendations of Oanh et al. (2023) , governments should address financial exclusion by eliminating barriers to access, improving financial education, and developing financial infrastructure in underserved areas. Digital financial services, including mobile banking, agent banking, and fintech innovations, should be prioritized as mechanisms to expand inclusion without introducing excessive risks. Third, regulatory oversight must be adaptive to account for the evolving relationship between FI and stability. Policymakers should integrate macroprudential regulations that ensure FI initiatives are aligned with broader macroeconomic policies. Strengthening risk management frameworks, particularly for banks expanding into high-risk, financially excluded segments, will be essential. Additionally, governance mechanisms must be reinforced to prevent regulatory capture, ensuring that FI policies remain market-driven and not subject to political distortions. Finally, the regulatory framework governing Ethiopia’s financial sector must evolve to accommodate the growing role of Islamic banking. Given its potential to enhance FI while promoting ethical banking practices, Islamic finance should be supported through a dedicated regulatory framework separate from conventional banking models. Aligning Ethiopia’s Islamic banking regulations with international standards set by institutions such as the Islamic Financial Services Board (IFSB) and the Accounting and Auditing Organization for Islamic Financial Institutions (AAOIFI) will be essential in fostering a stable and inclusive financial ecosystem. 5.3 Limitations and future research directions This study acknowledges the following limitations. First, it does not account for regional disparities within Ethiopia, which may be shaped by the diverse economic and social landscapes across the country’s regions. Future investigations should prioritize a more detailed analysis that incorporates regional policy perspectives, as this would yield richer insights and support the creation of customized interventions aimed at promoting FI both at the regional and national levels. Second, although there were attempts to include digital financial indicators, the lack of transaction data from pertinent authorities hindered the incorporation of these variables into the construction of the index. Consequently, future studies should address this gap. Third, bank stability is measured solely through the Z-score, due to data limitations. Future studies should explore alternative risk-based stability measures. Fourth, while the study employs a two-stage PCA approach, alternative methodologies such as CFA and entropy weighting could further validate the index. Fifth, reliance on commercial bank data may obscure sectoral heterogeneity. Future research should examine how development banks, microfinance institutions, and fintechs navigate the FI-stability trade-off. In particular, the role of digital FI warrants deeper exploration, given its increasing significance in emerging markets. Lastly, a longitudinal approach that tracks the stability effects of FI over an extended period could offer deeper insights into how these dynamics evolve. As regulatory frameworks adapt and financial systems mature, the optimal FI threshold may shift, necessitating ongoing research to refine financial inclusion policies accordingly. Ethics and consent Ethical approval and consent were not required. Data availability Underlying data Figshare: Dataset for financial inclusion and stability in Ethiopia case, https://doi.org/10.6084/m9.figshare.27327804.v2 ( Arebo et al., 2024 ). Data are available under the terms of the Creative Commons Attribution 4.0 International license (CC-BY 4.0). Acknowledgements Not applicable. 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Publisher Full Text Comments on this article Comments (0) Version 2 VERSION 2 PUBLISHED 15 Nov 2024 ADD YOUR COMMENT Comment Author details Author details 1 Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Mohammed Arebo Roles: Conceptualization, Data Curation, Formal Analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – Original Draft Preparation, Writing – Review & Editing Filmon Hando Roles: Supervision, Validation, Writing – Review & Editing Andualem Mekonnen Roles: Supervision, Validation, Writing – Review & Editing Competing interests No competing interests were disclosed. Grant information The author(s) declared that no grants were involved in supporting this work. Article Versions (2) version 2 Revised Published: 15 Apr 2025, 13:1369 https://doi.org/10.12688/f1000research.158461.2 version 1 Published: 15 Nov 2024, 13:1369 https://doi.org/10.12688/f1000research.158461.1 Copyright © 2025 Arebo M et al . This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Download Export To Sciwheel Bibtex EndNote ProCite Ref. Manager (RIS) Sente metrics Views Downloads F1000Research - - PubMed Central info_outline Data from PMC are received and updated monthly. - - Citations open_in_new 0 open_in_new 0 open_in_new SEE MORE DETAILS CITE how to cite this article Arebo M, Hando F and Mekonnen A. Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.12688/f1000research.158461.2 ) NOTE: If applicable, it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS track receive updates on this article Track an article to receive email alerts on any updates to this article. TRACK THIS ARTICLE Share Open Peer Review Current Reviewer Status: ? Key to Reviewer Statuses VIEW HIDE Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Version 2 VERSION 2 PUBLISHED 15 Apr 2025 Revised Views 0 Cite How to cite this report: Ali N. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.178988.r378159 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v2#referee-response-378159 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 24 Apr 2025 Najabat Ali , Soochow University, Suzhou, China Approved VIEWS 0 https://doi.org/10.5256/f1000research.178988.r378159 The authors have significantly revised the ... Continue reading READ ALL The authors have significantly revised the manuscript; therefore, I recommend it for indexed. Competing Interests: No competing interests were disclosed. Reviewer Expertise: FDI, Technology Innovation, Green Tarde, Green Innovation, Sustainable Economic Development, Environmental Sustainability I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Ali N. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.178988.r378159 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v2#referee-response-378159 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Respond or Comment COMMENT ON THIS REPORT Views 0 Cite How to cite this report: Sadok H. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.178988.r378160 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v2#referee-response-378160 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 23 Apr 2025 Hicham Sadok , Mohammed V University of Rabat (Morocco), Rabat, Morocco Approved VIEWS 0 https://doi.org/10.5256/f1000research.178988.r378160 The authors have taken into account most of the remarks and comments addressed to the first version. They have ... Continue reading READ ALL The authors have taken into account most of the remarks and comments addressed to the first version. They have substantially improved the first version and this new version meets the formal and substantive requirements for acceptance as a scientific article. Competing Interests: No competing interests were disclosed. Reviewer Expertise: Finance and Economics I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Sadok H. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.178988.r378160 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v2#referee-response-378160 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Respond or Comment COMMENT ON THIS REPORT Version 1 VERSION 1 PUBLISHED 15 Nov 2024 Views 0 Cite How to cite this report: Gharbi I. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r362882 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-362882 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 14 Feb 2025 Inès Gharbi , University of Sfax, Sfax, Tunisia Approved with Reservations VIEWS 0 https://doi.org/10.5256/f1000research.174050.r362882 Thank you for inviting me to review the current manuscript. From my point of view, this is a very interesting topic and a good attempt. I advise the author(s) to continue. Some comments should be taken seriously. ... Continue reading READ ALL Thank you for inviting me to review the current manuscript. From my point of view, this is a very interesting topic and a good attempt. I advise the author(s) to continue. Some comments should be taken seriously. I hope that these comments will help to improve the document even more. 1. The abstract must contain the main contributions. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Is the work clearly and accurately presented and does it cite the current literature? Yes Is the study design appropriate and is the work technically sound? Partly Are sufficient details of methods and analysis provided to allow replication by others? Yes If applicable, is the statistical analysis and its interpretation appropriate? Yes Are all the source data underlying the results available to ensure full reproducibility? Yes Are the conclusions drawn adequately supported by the results? Partly References 1. Gharbi I, Kammoun A: Developing a Multidimensional Financial Inclusion Index: A Comparison Based on Income Groups. Journal of Risk and Financial Management . 2023; 16 (6). Publisher Full Text 2. Gharbi I, Kammoun A: Relationship between digital banking and financial inclusion: Evidence from Tunisia. International Journal of Business Studies . 2022; 6 (3): 168-177 Publisher Full Text 3. Gharbi I, Daoud Y, Kammoun A: The Digitalization in the COVID-19 Era. 284-304 Publisher Full Text Competing Interests: No competing interests were disclosed. Reviewer Expertise: Financial technologies, Digitalization, Financial inclusion, renewable energies, and Green finance I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Gharbi I. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r362882 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-362882 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Author Response 17 Feb 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 17 Feb 2025 Author Response Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will ... Continue reading Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your comments to heart and will carefully address each of the five main points you raised in the revised version of this article. We look forward to your thoughts on the revisions we have made. Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your comments to heart and will carefully address each of the five main points you raised in the revised version of this article. We look forward to your thoughts on the revisions we have made. Competing Interests: No competing interests were disclosed. Close Report a concern Author Response 15 Apr 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 15 Apr 2025 Author Response Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed ... Continue reading Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed each of your suggestions, as explained below. 1. The abstract must contain the main contributions. Response: Thank you for your valuable comment. The abstract has been revised to include the main contributions of the study, particularly the non-linearity test and the analysis of macro-prudential regulation. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. Response: Thank you very much for significant comment. The introduction now explicitly states the novelty of the paper by comparing it with other studies and highlighting how our methodology and results address identified research gaps. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? Response: Thank you this valuable comment. We have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Response: Thank you for your significant comment. The conclusion has been expanded considering contribution. Policy implications, and limitations and future research directions presented in separate section. Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed each of your suggestions, as explained below. 1. The abstract must contain the main contributions. Response: Thank you for your valuable comment. The abstract has been revised to include the main contributions of the study, particularly the non-linearity test and the analysis of macro-prudential regulation. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. Response: Thank you very much for significant comment. The introduction now explicitly states the novelty of the paper by comparing it with other studies and highlighting how our methodology and results address identified research gaps. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? Response: Thank you this valuable comment. We have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Response: Thank you for your significant comment. The conclusion has been expanded considering contribution. Policy implications, and limitations and future research directions presented in separate section. Competing Interests: No competing interests were disclosed. Close Report a concern Respond or Comment COMMENTS ON THIS REPORT Author Response 17 Feb 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 17 Feb 2025 Author Response Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will ... Continue reading Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your comments to heart and will carefully address each of the five main points you raised in the revised version of this article. We look forward to your thoughts on the revisions we have made. Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your comments to heart and will carefully address each of the five main points you raised in the revised version of this article. We look forward to your thoughts on the revisions we have made. Competing Interests: No competing interests were disclosed. Close Report a concern Author Response 15 Apr 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 15 Apr 2025 Author Response Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed ... Continue reading Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed each of your suggestions, as explained below. 1. The abstract must contain the main contributions. Response: Thank you for your valuable comment. The abstract has been revised to include the main contributions of the study, particularly the non-linearity test and the analysis of macro-prudential regulation. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. Response: Thank you very much for significant comment. The introduction now explicitly states the novelty of the paper by comparing it with other studies and highlighting how our methodology and results address identified research gaps. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? Response: Thank you this valuable comment. We have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Response: Thank you for your significant comment. The conclusion has been expanded considering contribution. Policy implications, and limitations and future research directions presented in separate section. Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed each of your suggestions, as explained below. 1. The abstract must contain the main contributions. Response: Thank you for your valuable comment. The abstract has been revised to include the main contributions of the study, particularly the non-linearity test and the analysis of macro-prudential regulation. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. Response: Thank you very much for significant comment. The introduction now explicitly states the novelty of the paper by comparing it with other studies and highlighting how our methodology and results address identified research gaps. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? Response: Thank you this valuable comment. We have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Response: Thank you for your significant comment. The conclusion has been expanded considering contribution. Policy implications, and limitations and future research directions presented in separate section. Competing Interests: No competing interests were disclosed. Close Report a concern COMMENT ON THIS REPORT Views 0 Cite How to cite this report: Sadok H. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r362883 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-362883 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 11 Feb 2025 Hicham Sadok , Mohammed V University of Rabat (Morocco), Rabat, Morocco Approved with Reservations VIEWS 0 https://doi.org/10.5256/f1000research.174050.r362883 The article examines the impact of financial inclusion on banking stability in the Ethiopian context. It addresses an important issue that deserves analysis and investigation. However, some elements deserve improvement: 1-To clarify in the introduction the two ... Continue reading READ ALL The article examines the impact of financial inclusion on banking stability in the Ethiopian context. It addresses an important issue that deserves analysis and investigation. However, some elements deserve improvement: 1-To clarify in the introduction the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. 2- From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! 3-It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. 4- At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Good luck Is the work clearly and accurately presented and does it cite the current literature? Partly Is the study design appropriate and is the work technically sound? Yes Are sufficient details of methods and analysis provided to allow replication by others? Partly If applicable, is the statistical analysis and its interpretation appropriate? Yes Are all the source data underlying the results available to ensure full reproducibility? Yes Are the conclusions drawn adequately supported by the results? Partly References 1. Sadok H, Assadi D: The Contribution of AI-Based Analysis and Rating Models to Financial Inclusion. 2023. 11-25 Publisher Full Text 2. Sadok H: How can inclusive growth be enabled from financial technology. International Journal of Business Performance Management . 2021; 22 (2/3). Publisher Full Text Competing Interests: No competing interests were disclosed. Reviewer Expertise: Finance and Economics I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Sadok H. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r362883 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-362883 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Author Response 13 Feb 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 13 Feb 2025 Author Response Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will ... Continue reading Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your four key comments into consideration in the revised version of this article. Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your four key comments into consideration in the revised version of this article. Competing Interests: No competing interests were disclosed. Close Report a concern Author Response 15 Apr 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 15 Apr 2025 Author Response We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological ... Continue reading We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological aspects of the study. Below, we outline the changes made in response to your feedback. 1. To clarify in the introduction, the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. Response: Thank you for your valuable comment. The introduction has been revised to provide precise definitions of financial inclusion and banking stability. 2. From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 3. It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. Response: Thank you very much your feedback. Additional details on the stylized facts of the banks studied have been included in the empirical section. 4. At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Response: Thank you for your insightful comment. While the Z-score may overemphasize profitability, it was used due to the unavailability of risk-related data. We have acknowledged this limitation in the revised manuscript, stating: “Bank stability is measured solely through the Z-score due to data limitations. Future studies should explore alternative risk-based stability measures.” We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological aspects of the study. Below, we outline the changes made in response to your feedback. 1. To clarify in the introduction, the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. Response: Thank you for your valuable comment. The introduction has been revised to provide precise definitions of financial inclusion and banking stability. 2. From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 3. It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. Response: Thank you very much your feedback. Additional details on the stylized facts of the banks studied have been included in the empirical section. 4. At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Response: Thank you for your insightful comment. While the Z-score may overemphasize profitability, it was used due to the unavailability of risk-related data. We have acknowledged this limitation in the revised manuscript, stating: “Bank stability is measured solely through the Z-score due to data limitations. Future studies should explore alternative risk-based stability measures.” Competing Interests: No competing interests were disclosed. Close Report a concern Respond or Comment COMMENTS ON THIS REPORT Author Response 13 Feb 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 13 Feb 2025 Author Response Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will ... Continue reading Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your four key comments into consideration in the revised version of this article. Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your four key comments into consideration in the revised version of this article. Competing Interests: No competing interests were disclosed. Close Report a concern Author Response 15 Apr 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 15 Apr 2025 Author Response We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological ... Continue reading We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological aspects of the study. Below, we outline the changes made in response to your feedback. 1. To clarify in the introduction, the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. Response: Thank you for your valuable comment. The introduction has been revised to provide precise definitions of financial inclusion and banking stability. 2. From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 3. It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. Response: Thank you very much your feedback. Additional details on the stylized facts of the banks studied have been included in the empirical section. 4. At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Response: Thank you for your insightful comment. While the Z-score may overemphasize profitability, it was used due to the unavailability of risk-related data. We have acknowledged this limitation in the revised manuscript, stating: “Bank stability is measured solely through the Z-score due to data limitations. Future studies should explore alternative risk-based stability measures.” We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological aspects of the study. Below, we outline the changes made in response to your feedback. 1. To clarify in the introduction, the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. Response: Thank you for your valuable comment. The introduction has been revised to provide precise definitions of financial inclusion and banking stability. 2. From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 3. It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. Response: Thank you very much your feedback. Additional details on the stylized facts of the banks studied have been included in the empirical section. 4. At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Response: Thank you for your insightful comment. While the Z-score may overemphasize profitability, it was used due to the unavailability of risk-related data. We have acknowledged this limitation in the revised manuscript, stating: “Bank stability is measured solely through the Z-score due to data limitations. Future studies should explore alternative risk-based stability measures.” Competing Interests: No competing interests were disclosed. Close Report a concern COMMENT ON THIS REPORT Views 0 Cite How to cite this report: Ali N. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r354020 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-354020 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 22 Jan 2025 Najabat Ali , Soochow University, Suzhou, China Approved with Reservations VIEWS 0 https://doi.org/10.5256/f1000research.174050.r354020 Thanks for inviting me to review the current manuscript. The manuscript has some merits, but its current quality does not meet the indexing standard. Therefore, before indexing, the manuscript needs the following significant modifications: 1. The authors ... Continue reading READ ALL Thanks for inviting me to review the current manuscript. The manuscript has some merits, but its current quality does not meet the indexing standard. Therefore, before indexing, the manuscript needs the following significant modifications: 1. The authors must add a specific policy recommendation in the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. 3. The theoretical framework should be added. 4. The literature review section should be enriched with the most recent studies. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. 6. The graphical presentation of the methodology will be easier for the authors to understand. 7. In the results and discussion section, compare your results with the existing field studies. 8 The conclusion, policy implications, and limitations should be written under separate headings. 9. An English language check is required to avoid grammatical and spelling errors. Is the work clearly and accurately presented and does it cite the current literature? Partly Is the study design appropriate and is the work technically sound? Partly Are sufficient details of methods and analysis provided to allow replication by others? Partly If applicable, is the statistical analysis and its interpretation appropriate? Partly Are all the source data underlying the results available to ensure full reproducibility? Partly Are the conclusions drawn adequately supported by the results? Partly References 1. Ali N, Tariq S: Determinants of Fintech Adoption in Banking: The Role of Technological Literacy: Evidence from Pakistan. International Journal of Technological Learning, Innovation and Development . 2025; 16 (3). Publisher Full Text 2. Junqi L, Abbas S, Rongbing L, Ali N: The impact of digital financial development on corporate leverage ratio: The case of a-share listed non-financial enterprises in China's Shanghai and Shenzhen stock exchanges. PLoS One . 2024; 19 (8): e0302978 PubMed Abstract | Publisher Full Text Competing Interests: No competing interests were disclosed. Reviewer Expertise: FDI, Technology Innovation, Green Tarde, Green Innovation, Sustainable Economic Development, Environmental Sustainability I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Ali N. Reviewer Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r354020 ) The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-354020 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Author Response 27 Jan 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 27 Jan 2025 Author Response Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will ... Continue reading Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We eagerly anticipate additional feedback and suggestions from the other reviewers, and upon receipt, we will take your nine comments into account in the revised version of this article. Regards Mohammed Jatoro Arebo Main and corresponding author Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We eagerly anticipate additional feedback and suggestions from the other reviewers, and upon receipt, we will take your nine comments into account in the revised version of this article. Regards Mohammed Jatoro Arebo Main and corresponding author Competing Interests: No competing interests were disclosed. Close Report a concern Author Response 15 Apr 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 15 Apr 2025 Author Response Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We ... Continue reading Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We have carefully addressed each of your suggestions, as detailed below. 1. The authors must add a specific policy recommendation in the abstract section. Response: We appreciate your valuable comment. We added a specific policy recommendation to the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. Response: Thank you for your important comment. We highlighted the novelty of the study by comparing it with previous research and explicitly stating how our methodology and results address identified research gaps. 3. The theoretical framework should be added. Response: Thank you for your meticulous comment. We enriched the theoretical framework to provide a stronger foundation for the study. 4. The literature review section should be enriched with the most recent studies. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. Response: Thank you for your valuable comment. We have justified the methods used in the study by comparing them with existing approaches (specifically with FE and RE) in the field. The methodology section, previously included in the results, has been repositioned to the Model Specification subsection under the Methods section. Additionally, we have introduced the non-linearity test and Lind and Mehlum’s (2010) U-test in this section to enhance methodological rigor. Lastly, we have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 6. The graphical presentation of the methodology will be easier for the authors to understand. Response: Thank you for your comment. A graphical representation of the methodology has been added to improve clarity and accessibility. 7. In the results and discussion section, compare your results with the existing field studies. Response: Thank you very much for this significant comment. The results and discussion section now includes comparisons with existing studies to contextualize our findings. 8. The conclusion, policy implications, and limitations should be written under separate headings. Response: Thank you for your significant comment. In line with the journal guidelines and other reviewer comments, the conclusion restructured into separate sections for policy implications, limitations, and future research directions, with the study’s contributions explicitly highlighted within the conclusion. 9. An English language check is required to avoid grammatical and spelling errors. Response: Thank you for your significant comment. A thorough English language check has been conducted to eliminate grammatical and spelling errors. Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We have carefully addressed each of your suggestions, as detailed below. 1. The authors must add a specific policy recommendation in the abstract section. Response: We appreciate your valuable comment. We added a specific policy recommendation to the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. Response: Thank you for your important comment. We highlighted the novelty of the study by comparing it with previous research and explicitly stating how our methodology and results address identified research gaps. 3. The theoretical framework should be added. Response: Thank you for your meticulous comment. We enriched the theoretical framework to provide a stronger foundation for the study. 4. The literature review section should be enriched with the most recent studies. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. Response: Thank you for your valuable comment. We have justified the methods used in the study by comparing them with existing approaches (specifically with FE and RE) in the field. The methodology section, previously included in the results, has been repositioned to the Model Specification subsection under the Methods section. Additionally, we have introduced the non-linearity test and Lind and Mehlum’s (2010) U-test in this section to enhance methodological rigor. Lastly, we have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 6. The graphical presentation of the methodology will be easier for the authors to understand. Response: Thank you for your comment. A graphical representation of the methodology has been added to improve clarity and accessibility. 7. In the results and discussion section, compare your results with the existing field studies. Response: Thank you very much for this significant comment. The results and discussion section now includes comparisons with existing studies to contextualize our findings. 8. The conclusion, policy implications, and limitations should be written under separate headings. Response: Thank you for your significant comment. In line with the journal guidelines and other reviewer comments, the conclusion restructured into separate sections for policy implications, limitations, and future research directions, with the study’s contributions explicitly highlighted within the conclusion. 9. An English language check is required to avoid grammatical and spelling errors. Response: Thank you for your significant comment. A thorough English language check has been conducted to eliminate grammatical and spelling errors. Competing Interests: No competing interests were disclosed. Close Report a concern Respond or Comment COMMENTS ON THIS REPORT Author Response 27 Jan 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 27 Jan 2025 Author Response Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will ... Continue reading Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We eagerly anticipate additional feedback and suggestions from the other reviewers, and upon receipt, we will take your nine comments into account in the revised version of this article. Regards Mohammed Jatoro Arebo Main and corresponding author Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We eagerly anticipate additional feedback and suggestions from the other reviewers, and upon receipt, we will take your nine comments into account in the revised version of this article. Regards Mohammed Jatoro Arebo Main and corresponding author Competing Interests: No competing interests were disclosed. Close Report a concern Author Response 15 Apr 2025 Mohammed Arebo , Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia 15 Apr 2025 Author Response Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We ... Continue reading Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We have carefully addressed each of your suggestions, as detailed below. 1. The authors must add a specific policy recommendation in the abstract section. Response: We appreciate your valuable comment. We added a specific policy recommendation to the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. Response: Thank you for your important comment. We highlighted the novelty of the study by comparing it with previous research and explicitly stating how our methodology and results address identified research gaps. 3. The theoretical framework should be added. Response: Thank you for your meticulous comment. We enriched the theoretical framework to provide a stronger foundation for the study. 4. The literature review section should be enriched with the most recent studies. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. Response: Thank you for your valuable comment. We have justified the methods used in the study by comparing them with existing approaches (specifically with FE and RE) in the field. The methodology section, previously included in the results, has been repositioned to the Model Specification subsection under the Methods section. Additionally, we have introduced the non-linearity test and Lind and Mehlum’s (2010) U-test in this section to enhance methodological rigor. Lastly, we have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 6. The graphical presentation of the methodology will be easier for the authors to understand. Response: Thank you for your comment. A graphical representation of the methodology has been added to improve clarity and accessibility. 7. In the results and discussion section, compare your results with the existing field studies. Response: Thank you very much for this significant comment. The results and discussion section now includes comparisons with existing studies to contextualize our findings. 8. The conclusion, policy implications, and limitations should be written under separate headings. Response: Thank you for your significant comment. In line with the journal guidelines and other reviewer comments, the conclusion restructured into separate sections for policy implications, limitations, and future research directions, with the study’s contributions explicitly highlighted within the conclusion. 9. An English language check is required to avoid grammatical and spelling errors. Response: Thank you for your significant comment. A thorough English language check has been conducted to eliminate grammatical and spelling errors. Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We have carefully addressed each of your suggestions, as detailed below. 1. The authors must add a specific policy recommendation in the abstract section. Response: We appreciate your valuable comment. We added a specific policy recommendation to the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. Response: Thank you for your important comment. We highlighted the novelty of the study by comparing it with previous research and explicitly stating how our methodology and results address identified research gaps. 3. The theoretical framework should be added. Response: Thank you for your meticulous comment. We enriched the theoretical framework to provide a stronger foundation for the study. 4. The literature review section should be enriched with the most recent studies. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. Response: Thank you for your valuable comment. We have justified the methods used in the study by comparing them with existing approaches (specifically with FE and RE) in the field. The methodology section, previously included in the results, has been repositioned to the Model Specification subsection under the Methods section. Additionally, we have introduced the non-linearity test and Lind and Mehlum’s (2010) U-test in this section to enhance methodological rigor. Lastly, we have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 6. The graphical presentation of the methodology will be easier for the authors to understand. Response: Thank you for your comment. A graphical representation of the methodology has been added to improve clarity and accessibility. 7. In the results and discussion section, compare your results with the existing field studies. Response: Thank you very much for this significant comment. The results and discussion section now includes comparisons with existing studies to contextualize our findings. 8. The conclusion, policy implications, and limitations should be written under separate headings. Response: Thank you for your significant comment. In line with the journal guidelines and other reviewer comments, the conclusion restructured into separate sections for policy implications, limitations, and future research directions, with the study’s contributions explicitly highlighted within the conclusion. 9. An English language check is required to avoid grammatical and spelling errors. Response: Thank you for your significant comment. A thorough English language check has been conducted to eliminate grammatical and spelling errors. Competing Interests: No competing interests were disclosed. Close Report a concern COMMENT ON THIS REPORT Comments on this article Comments (0) Version 2 VERSION 2 PUBLISHED 15 Nov 2024 ADD YOUR COMMENT Comment keyboard_arrow_left keyboard_arrow_right Open Peer Review Reviewer Status info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Reviewer Reports Invited Reviewers 1 2 3 Version 2 (revision) 15 Apr 25 read read Version 1 15 Nov 24 read read read Najabat Ali , Soochow University, Suzhou, China Hicham Sadok , Mohammed V University of Rabat (Morocco), Rabat, Morocco Inès Gharbi , University of Sfax, Sfax, Tunisia Comments on this article All Comments (0) Add a comment Sign up for content alerts Sign Up You are now signed up to receive this alert Browse by related subjects keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2025 Ali N. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 24 Apr 2025 | for Version 2 Najabat Ali , Soochow University, Suzhou, China 0 Views copyright © 2025 Ali N. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (0) Approved info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions The authors have significantly revised the manuscript; therefore, I recommend it for indexed. Competing Interests No competing interests were disclosed. Reviewer Expertise FDI, Technology Innovation, Green Tarde, Green Innovation, Sustainable Economic Development, Environmental Sustainability I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard. reply Respond to this report Responses (0) Ali N. Peer Review Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.178988.r378159) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. The direct URL for this report is: https://f1000research.com/articles/13-1369/v2#referee-response-378159 keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2025 Sadok H. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 23 Apr 2025 | for Version 2 Hicham Sadok , Mohammed V University of Rabat (Morocco), Rabat, Morocco 0 Views copyright © 2025 Sadok H. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (0) Approved info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions The authors have taken into account most of the remarks and comments addressed to the first version. They have substantially improved the first version and this new version meets the formal and substantive requirements for acceptance as a scientific article. Competing Interests No competing interests were disclosed. Reviewer Expertise Finance and Economics I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard. reply Respond to this report Responses (0) Sadok H. Peer Review Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.178988.r378160) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. The direct URL for this report is: https://f1000research.com/articles/13-1369/v2#referee-response-378160 keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2025 Gharbi I. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 14 Feb 2025 | for Version 1 Inès Gharbi , University of Sfax, Sfax, Tunisia 0 Views copyright © 2025 Gharbi I. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (2) Approved With Reservations info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Thank you for inviting me to review the current manuscript. From my point of view, this is a very interesting topic and a good attempt. I advise the author(s) to continue. Some comments should be taken seriously. I hope that these comments will help to improve the document even more. 1. The abstract must contain the main contributions. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Is the work clearly and accurately presented and does it cite the current literature? Yes Is the study design appropriate and is the work technically sound? Partly Are sufficient details of methods and analysis provided to allow replication by others? Yes If applicable, is the statistical analysis and its interpretation appropriate? Yes Are all the source data underlying the results available to ensure full reproducibility? Yes Are the conclusions drawn adequately supported by the results? Partly References 1. Gharbi I, Kammoun A: Developing a Multidimensional Financial Inclusion Index: A Comparison Based on Income Groups. Journal of Risk and Financial Management . 2023; 16 (6). Publisher Full Text 2. Gharbi I, Kammoun A: Relationship between digital banking and financial inclusion: Evidence from Tunisia. International Journal of Business Studies . 2022; 6 (3): 168-177 Publisher Full Text 3. Gharbi I, Daoud Y, Kammoun A: The Digitalization in the COVID-19 Era. 284-304 Publisher Full Text Competing Interests No competing interests were disclosed. Reviewer Expertise Financial technologies, Digitalization, Financial inclusion, renewable energies, and Green finance I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. reply Respond to this report Responses (2) Author Response 17 Feb 2025 Mohammed Arebo, Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Dear Ass. Professor Inès Gharbi, Thank you very much for dedicating your time and effort to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your comments to heart and will carefully address each of the five main points you raised in the revised version of this article. We look forward to your thoughts on the revisions we have made. View more View less Competing Interests No competing interests were disclosed. reply Respond Report a concern Author Response 15 Apr 2025 Mohammed Arebo, Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Thank you for your detailed and constructive review of our manuscript. Your comments have been instrumental in enhancing the novelty, methodological rigor, and presentation of our work. We have addressed each of your suggestions, as explained below. 1. The abstract must contain the main contributions. Response: Thank you for your valuable comment. The abstract has been revised to include the main contributions of the study, particularly the non-linearity test and the analysis of macro-prudential regulation. 2. I think the introduction should state the novelty of the paper compared to other papers published in the field. Author(s) should be more explicit about how their methodology or results fill identified research gaps to strengthen the justification for publication. Response: Thank you very much for significant comment. The introduction now explicitly states the novelty of the paper by comparing it with other studies and highlighting how our methodology and results address identified research gaps. 3. The paper demonstrates an adequate understanding of the relevant literature in the field. However, I have seen that no hypotheses are mentioned, so it is better to mention the hypotheses and show the reader that you have tested them. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 4. Please give reasons for the choice of methodologies used, why choose the two-stage PCA method rather than the entropy weighting method to construct the Financial Inclusion Index? Response: Thank you this valuable comment. We have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 5. At the same time, I think that the conclusion part of the paper should be extended with contributions, limitations, and future research directions. Response: Thank you for your significant comment. The conclusion has been expanded considering contribution. Policy implications, and limitations and future research directions presented in separate section. View more View less Competing Interests No competing interests were disclosed. reply Respond Report a concern Gharbi I. Peer Review Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r362882) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-362882 keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2025 Sadok H. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 11 Feb 2025 | for Version 1 Hicham Sadok , Mohammed V University of Rabat (Morocco), Rabat, Morocco 0 Views copyright © 2025 Sadok H. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (2) Approved With Reservations info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions The article examines the impact of financial inclusion on banking stability in the Ethiopian context. It addresses an important issue that deserves analysis and investigation. However, some elements deserve improvement: 1-To clarify in the introduction the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. 2- From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! 3-It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. 4- At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Good luck Is the work clearly and accurately presented and does it cite the current literature? Partly Is the study design appropriate and is the work technically sound? Yes Are sufficient details of methods and analysis provided to allow replication by others? Partly If applicable, is the statistical analysis and its interpretation appropriate? Yes Are all the source data underlying the results available to ensure full reproducibility? Yes Are the conclusions drawn adequately supported by the results? Partly References 1. Sadok H, Assadi D: The Contribution of AI-Based Analysis and Rating Models to Financial Inclusion. 2023. 11-25 Publisher Full Text 2. Sadok H: How can inclusive growth be enabled from financial technology. International Journal of Business Performance Management . 2021; 22 (2/3). Publisher Full Text Competing Interests No competing interests were disclosed. Reviewer Expertise Finance and Economics I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. reply Respond to this report Responses (2) Author Response 13 Feb 2025 Mohammed Arebo, Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Dear Professor Hicham Sadok, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We have taken your four key comments into consideration in the revised version of this article. View more View less Competing Interests No competing interests were disclosed. reply Respond Report a concern Author Response 15 Apr 2025 Mohammed Arebo, Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia We sincerely appreciate the time and effort you have taken to review our manuscript. Your thoughtful comments have provided valuable guidance, enabling us to strengthen the theoretical, empirical and methodological aspects of the study. Below, we outline the changes made in response to your feedback. 1. To clarify in the introduction, the two key variables of the study, namely what is meant by financial inclusion and banking stability: these two concepts are too broad and must be defined precisely. Response: Thank you for your valuable comment. The introduction has been revised to provide precise definitions of financial inclusion and banking stability. 2. From the conceptualization of the key variables, it would be more structuring in the literature review to focus on the work related to these two concepts in order to be able to ultimately deduce ideas or hypotheses to study in the empirical part: a segmented literature review like what has been done does not allow us to know what the usefulness of this step is for the future!! Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 3. It would be useful in the empirical part to detail a little more on the stylized facts of the banks studied. Response: Thank you very much your feedback. Additional details on the stylized facts of the banks studied have been included in the empirical section. 4. At the level of dependent variables, namely, financial stability, the Z score is not sufficiently significant for stability, it rather designates profitability. However, if the latter is important for stability, it is not sufficient. Why not consider the ratios of the base as a criterion of stability instead of the Z ratio? Response: Thank you for your insightful comment. While the Z-score may overemphasize profitability, it was used due to the unavailability of risk-related data. We have acknowledged this limitation in the revised manuscript, stating: “Bank stability is measured solely through the Z-score due to data limitations. Future studies should explore alternative risk-based stability measures.” View more View less Competing Interests No competing interests were disclosed. reply Respond Report a concern Sadok H. Peer Review Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r362883) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. The direct URL for this report is: https://f1000research.com/articles/13-1369/v1#referee-response-362883 keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2025 Ali N. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 22 Jan 2025 | for Version 1 Najabat Ali , Soochow University, Suzhou, China 0 Views copyright © 2025 Ali N. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (2) Approved With Reservations info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Thanks for inviting me to review the current manuscript. The manuscript has some merits, but its current quality does not meet the indexing standard. Therefore, before indexing, the manuscript needs the following significant modifications: 1. The authors must add a specific policy recommendation in the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. 3. The theoretical framework should be added. 4. The literature review section should be enriched with the most recent studies. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. 6. The graphical presentation of the methodology will be easier for the authors to understand. 7. In the results and discussion section, compare your results with the existing field studies. 8 The conclusion, policy implications, and limitations should be written under separate headings. 9. An English language check is required to avoid grammatical and spelling errors. Is the work clearly and accurately presented and does it cite the current literature? Partly Is the study design appropriate and is the work technically sound? Partly Are sufficient details of methods and analysis provided to allow replication by others? Partly If applicable, is the statistical analysis and its interpretation appropriate? Partly Are all the source data underlying the results available to ensure full reproducibility? Partly Are the conclusions drawn adequately supported by the results? Partly References 1. Ali N, Tariq S: Determinants of Fintech Adoption in Banking: The Role of Technological Literacy: Evidence from Pakistan. International Journal of Technological Learning, Innovation and Development . 2025; 16 (3). Publisher Full Text 2. Junqi L, Abbas S, Rongbing L, Ali N: The impact of digital financial development on corporate leverage ratio: The case of a-share listed non-financial enterprises in China's Shanghai and Shenzhen stock exchanges. PLoS One . 2024; 19 (8): e0302978 PubMed Abstract | Publisher Full Text Competing Interests No competing interests were disclosed. Reviewer Expertise FDI, Technology Innovation, Green Tarde, Green Innovation, Sustainable Economic Development, Environmental Sustainability I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. reply Respond to this report Responses (2) Author Response 27 Jan 2025 Mohammed Arebo, Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Dear Professor Najabat Ali, We sincerely thank you for the time and effort you have dedicated to reviewing our work, particularly for your prompt review report. Your insightful comments will undoubtedly enhance the quality of our manuscript. We eagerly anticipate additional feedback and suggestions from the other reviewers, and upon receipt, we will take your nine comments into account in the revised version of this article. Regards Mohammed Jatoro Arebo Main and corresponding author View more View less Competing Interests No competing interests were disclosed. reply Respond Report a concern Author Response 15 Apr 2025 Mohammed Arebo, Regional and Local Development Studies, Addis Ababa University College of Development Studies, Addis Ababa, Ethiopia Thank you for your thorough review and constructive feedback on our manuscript. Your insightful comments have significantly helped us improve the clarity, rigor, and overall quality of the study. We have carefully addressed each of your suggestions, as detailed below. 1. The authors must add a specific policy recommendation in the abstract section. Response: We appreciate your valuable comment. We added a specific policy recommendation to the abstract section. 2. The study's novelty should be highlighted by comparing the current study with previous studies in the field. Response: Thank you for your important comment. We highlighted the novelty of the study by comparing it with previous research and explicitly stating how our methodology and results address identified research gaps. 3. The theoretical framework should be added. Response: Thank you for your meticulous comment. We enriched the theoretical framework to provide a stronger foundation for the study. 4. The literature review section should be enriched with the most recent studies. Response: Thank you for this significant comment. We updated the literature review with the most recent studies and segmented it to focus on the key variables: (i) financial inclusion and banking stability, (ii) non-linear relationship between financial inclusion and bank stability, (iii) the moderating effects of macro-prudential regulation. This restructuring allows for clearer hypothesis formulation and empirical relevance. 5. In the methodology section, justify the methods used in your study by comparing them with the existing field methods. Response: Thank you for your valuable comment. We have justified the methods used in the study by comparing them with existing approaches (specifically with FE and RE) in the field. The methodology section, previously included in the results, has been repositioned to the Model Specification subsection under the Methods section. Additionally, we have introduced the non-linearity test and Lind and Mehlum’s (2010) U-test in this section to enhance methodological rigor. Lastly, we have provided a rationale for choosing the two-stage PCA method over alternatives, such as the entropy weighting and CFA method, for constructing the financial inclusion index. 6. The graphical presentation of the methodology will be easier for the authors to understand. Response: Thank you for your comment. A graphical representation of the methodology has been added to improve clarity and accessibility. 7. In the results and discussion section, compare your results with the existing field studies. Response: Thank you very much for this significant comment. The results and discussion section now includes comparisons with existing studies to contextualize our findings. 8. The conclusion, policy implications, and limitations should be written under separate headings. Response: Thank you for your significant comment. In line with the journal guidelines and other reviewer comments, the conclusion restructured into separate sections for policy implications, limitations, and future research directions, with the study’s contributions explicitly highlighted within the conclusion. 9. An English language check is required to avoid grammatical and spelling errors. Response: Thank you for your significant comment. A thorough English language check has been conducted to eliminate grammatical and spelling errors. View more View less Competing Interests No competing interests were disclosed. reply Respond Report a concern Ali N. Peer Review Report For: Financial inclusion and stability in Ethiopia using bank-level data: A two-step system GMM estimation [version 2; peer review: 2 approved, 1 approved with reservations] . F1000Research 2025, 13 :1369 ( https://doi.org/10.5256/f1000research.174050.r354020) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. 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