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Using Consumption Data to Derive Optimal Income and Capital Tax Rates

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  • Hellwig, Christian
  • Werquin, Nicolas

Abstract

We study a Mirrleesian economy with labor income, consumption, and retirement savings or bequests. We derive a novel representation of optimal non-linear income and savings distortions that highlights the role of consumption inequality and consumption responses to tax changes. Our representation establishes a close connection between the formula for top income taxes of Saez (2001) and the uniform commodity taxation theorem of Atkinson and Stiglitz (1976): One cannot be valid without the other, and departures from this joint benchmark lead to a clear trade-off between income and savings taxes. Consumption data in turn discipline the optimal departure from this benchmark. Because consumption is much less concentrated than income, it is optimal to shift a substantial fraction of the top earners’ tax burden from income to savings.

Suggested Citation

  • Hellwig, Christian & Werquin, Nicolas, 2022. "Using Consumption Data to Derive Optimal Income and Capital Tax Rates," CEPR Discussion Papers 16863, Centre for Economic Policy Research.
  • Handle: RePEc:cpr:ceprdp:16863
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    Cited by:

    1. is not listed on IDEAS
    2. Paweł Doligalski & Piotr Dworczak & Mohammad Akbarpour & Scott Duke Kominers*, 2025. "Optimal Redistribution via Income Taxation and Market Design," Bristol Economics Discussion Papers 25/787, School of Economics, University of Bristol, UK.
    3. Antoine Ferey & Benjamin B. Lockwood & Dmitry Taubinsky, 2024. "Sufficient Statistics for Nonlinear Tax Systems with General Across-Income Heterogeneity," American Economic Review, American Economic Association, vol. 114(10), pages 3206-3249, October.

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    Keywords

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    JEL classification:

    • H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation
    • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution

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