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Redistribution and Insurance with Simple Tax Instruments

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  • Findeisen, Sebastian
  • Sachs, Dominik

Abstract

We analyze optimal taxation of labor and capital income in a life-cycle framework with idiosyncratic income risk. We provide a novel decomposition of labor income tax formulas into a redistribution and an insurance component. The latter is independent of the social welfare function and determined by the degree of income risk and risk aversion. The optimal linear capital tax is non-zero and trades off redistribution and insurance against savings distortions. Our quantitative results reveal that the insurance component contributes significantly to optimal labor tax rates and provides an informative lower bound on optimal taxes: even for welfare functions that do not value redistribution, marginal tax rates are positive for all income levels. Optimal capital taxes are significant and yield sizable welfare gains; in particular if labor income taxes are suboptimal.

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  • Findeisen, Sebastian & Sachs, Dominik, 2015. "Redistribution and Insurance with Simple Tax Instruments," CEPR Discussion Papers 10668, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:10668
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    Cited by:

    1. Mark Colas & Sebastian Findeisen & Dominik Sachs, 2021. "Optimal Need-Based Financial Aid," Journal of Political Economy, University of Chicago Press, vol. 129(2), pages 492-533.
    2. Cui, Xiaoyong & Gong, Liutang & Li, Wenjian, 2021. "Supply-side optimal capital taxation with endogenous wage inequality," Journal of Public Economics, Elsevier, vol. 198(C).
    3. Stefanie Stantcheva, 2020. "Dynamic Taxation," Annual Review of Economics, Annual Reviews, vol. 12(1), pages 801-831, August.
    4. Ferey, Antoine, 2022. "Redistribution and Unemployment Insurance," Rationality and Competition Discussion Paper Series 345, CRC TRR 190 Rationality and Competition.
    5. Yongsung Chang & Yena Park, 2021. "Optimal Taxation with Private Insurance [Uninsured Idiosyncratic Risk and Aggregate Saving]," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 88(6), pages 2766-2798.
    6. Oliwia Komada & Krzysztof Makarski & Joanna Tyrowicz, 2021. "Progressing towards efficiency: the role for labor tax progression in reforming social security," GRAPE Working Papers 57, GRAPE Group for Research in Applied Economics.
    7. Findeisen, Sebastian & Sachs, Dominik, 2016. "Education and optimal dynamic taxation: The role of income-contingent student loans," Journal of Public Economics, Elsevier, vol. 138(C), pages 1-21.
    8. Makarski, Krzysztof & Tyrowicz, Joanna & Komada, Oliwia, 2021. "Efficiency versus Insurance: Capital Income Taxation and Privatizing Social Security," IZA Discussion Papers 14805, Institute of Labor Economics (IZA).

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    More about this item

    Keywords

    Capital taxation; Insurance; Optimal taxation; Redistribution;
    All these keywords.

    JEL classification:

    • H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation
    • H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies

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