Monday, October 2, 2017

Principles of Tax Modeling: A brief introduction [MARTIN, J-M

In many macroeconomic books, taxation is reduced to a percentage of GDP in a wider macroeconomic model. However, taxation itself is deep enough to elaborate longer modeling. In this introduction, I will try to explain how modern taxation works and how economists should face tax issues before applying any recommendation of fiscal or tax policy.

The first idea of taxation in macroeconomics is the well known equation of disposable income, like this: YD = Y – T = Y – Y.t = (1-t).Y. While this equation might seem correct, it assumes that the GDP (Y) is equal to the taxable base. The main issue here is that it isn’t. However, that equation might be useful to create the indicator of effective tax burden, where “t” becomes endogenous rather than 


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