Proportional Income Taxation from the Perspective of the Dynamic Model of Life Cycle Theory: brazilians case

The present research analyzes the possibility of changing the current progressive tax system on income due to its economic inefficiency, and worsening levels of inequality, as well as the historical aim of increasing tax burdens with income tax reforms with the aim of covering extraordinary expenses incurred by the State. Because of this, the core of the research investigates the possibility of applying the life cycle theory to taxation on the income of taxpayers residing in Brazil, suggesting a profound change in the current design of the progressive system of taxation on income for a proportional taxation system. on income that is based on the life cycle theory, consisting of a model that confers efficiency and may eventually be fair depending on the country's situation. JEL classification H21 . H23 . H29