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Optimal Taxation with Private Insurance
[Uninsured Idiosyncratic Risk and Aggregate Saving]

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  • Yongsung Chang
  • Yena Park

Abstract

We derive a fully non-linear optimal income tax schedule in the presence of private insurance. We fill the gap in the literature by studying the optimal tax formula with a comprehensive structure of the private markets—including incomplete markets models—both theoretically and quantitatively. As in the standard taxation literature without private insurance, the optimal tax formula can still be expressed in terms of standard sufficient statistics. With private insurance, however, the formula involves additional terms that reflect how the private market interacts with public insurance. For example, the optimal tax formula should also consider asset distribution and pecuniary externalities as well as the welfare effects of borrowing constraints.

Suggested Citation

  • Yongsung Chang & Yena Park, 2021. "Optimal Taxation with Private Insurance [Uninsured Idiosyncratic Risk and Aggregate Saving]," Review of Economic Studies, Oxford University Press, vol. 88(6), pages 2766-2798.
  • Handle: RePEc:oup:restud:v:88:y:2021:i:6:p:2766-2798.
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    File URL: http://hdl.handle.net/10.1093/restud/rdab003
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    2. Ferey, Antoine, 2022. "Redistribution and Unemployment Insurance," Rationality and Competition Discussion Paper Series 345, CRC TRR 190 Rationality and Competition.
    3. Ferey, Antoine & Haufler, Andreas & Perroni, Carlo, 2023. "Incentives, globalization, and redistribution," Journal of Public Economics, Elsevier, vol. 224(C).
    4. Paweł Doligalski & Abdoulaye Ndiaye & Nicolas Werquin, 2023. "Redistribution with Performance Pay," Journal of Political Economy Macroeconomics, University of Chicago Press, vol. 1(2), pages 371-402.
    5. Eunseong Ma, 2019. "The Heterogeneous Responses of Consumption between Poor and Rich to Government Spending Shocks," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 51(7), pages 1999-2028, October.
    6. Bo Hyun Chang & Yongsung Chang & Sun-Bin Kim, 2018. "Pareto Weights in Practice: A Quantitative Analysis of 32 OECD Countries," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 28, pages 181-204, April.
    7. Bo Hyun Chang & Yongsung Chang & Sun-Bin Kim, 2016. "Pareto Weights in Practice: A Quantitative Analysis Across 32 OECD Countries," Working papers 2016rwp-92, Yonsei University, Yonsei Economics Research Institute.

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    More about this item

    Keywords

    Optimal taxation; Private insurance; Pecuniary externalities; Variational approach;
    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
    • D51 - Microeconomics - - General Equilibrium and Disequilibrium - - - Exchange and Production Economies

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