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Optimal Redistribution: Rising Inequality vs. Rising Living Standards

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  • Ferriere, Axelle
  • Grübener, Philipp
  • Sachs, Dominik

Abstract

Over the last decades, the United States has experienced a large increase in, both, income inequality and living standards. The workhorse models of optimal income taxation call for more redistribution as inequality rises. By contrast, living standards play no role for taxes and transfers in these homothetic environments. This paper incorporates living standards into the optimal income tax problem by means of non-homothetic preferences. In a Mirrlees setup, we show that rising living standards alter both sides of the equity-efficiency trade-off. As an economy becomes richer, non-homotheticities imply a fall in the dispersion of marginal utilities, which weakens distributional concerns but has ambiguous effects on efficiency concerns. In a dynamic incomplete-market setup calibrated to the United States in 1950 and 2010, we quantify this new channel. Rising living standards dampen by at least 25% the desired increase in redistribution due to rising inequality.

Suggested Citation

  • Ferriere, Axelle & Grübener, Philipp & Sachs, Dominik, 2024. "Optimal Redistribution: Rising Inequality vs. Rising Living Standards," CEPR Discussion Papers 19107, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:19107
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    More about this item

    Keywords

    Taxation; Growth; Redistribution; Non-homothetic preferences;
    All these keywords.

    JEL classification:

    • H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation
    • H31 - Public Economics - - Fiscal Policies and Behavior of Economic Agents - - - Household
    • O23 - Economic Development, Innovation, Technological Change, and Growth - - Development Planning and Policy - - - Fiscal and Monetary Policy in Development

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