Tax Policy and Income Inequality in the United States, 1979-2007

Abstract : This paper assesses the effects of U.S. tax policy reforms on inequality over around three decades, from 1979 to 2007. It applies a new method for decomposing changes in government redistribution into (1) a direct policy effect resulting from policy changes and (2) the effects of changing market incomes. Over the period as a whole, the tax policy changes increased income inequality by pushing up the income share of high-income earners (the top 20%). (JEL H23, H31, H53, P16)