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Optimal taxation and top incomes

Research paper by Yuri Andrienko, Patricia Apps; Ray Rees

Indexed on: 13 Nov '16Published on: 01 Dec '16Published in: International Tax and Public Finance



Abstract

Abstract In many high-income countries over the past three decades there has been both large growth in inequality of wages and income and a shift in the burden of taxation from the top to the middle of the income distribution. A literature has developed which focuses on optimal tax rates for the top 1 % of the income distribution. In contrast, this paper considers the effect of inequality growth on the structure of a piecewise linear tax system defined over the entire income distribution. Our results suggest that the appropriate response to the increases in inequality would have been a shift towards a tax system with a lower tax rate in the lower half of the distribution together with a highly marginal rate progressive structure in the upper half, a clear differentiation between the top 10 % and the top 1 % and a higher top tax rate. Further inequality growth strengthens these characteristics of the optimal tax structure.AbstractIn many high-income countries over the past three decades there has been both large growth in inequality of wages and income and a shift in the burden of taxation from the top to the middle of the income distribution. A literature has developed which focuses on optimal tax rates for the top 1 % of the income distribution. In contrast, this paper considers the effect of inequality growth on the structure of a piecewise linear tax system defined over the entire income distribution. Our results suggest that the appropriate response to the increases in inequality would have been a shift towards a tax system with a lower tax rate in the lower half of the distribution together with a highly marginal rate progressive structure in the upper half, a clear differentiation between the top 10 % and the top 1 % and a higher top tax rate. Further inequality growth strengthens these characteristics of the optimal tax structure.