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Income taxation of couples, spouses' labor supplies and the gender wage gap

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  • Cremer, Helmuth
  • Roeder, Kerstin

Abstract

We study the taxation of couples when female wages do not reflect their true productivity. We show that the expression for the marginal tax rates of the male spouses is the same as in a Mirrleesian world where wages reflect true productivities. Marginal taxes for the female spouses are reduced because of a Pigouvian correction. Consequently, the wage discrimination pleads for a lower marginal tax on the female spouse. Furthermore, the distortion of a couples' tradeoff between male and female labor supply is the same as in a Mirrleesian world without a gender wage gap. It only depends on true productivities and not on wages. In other words, the tax system completely neutralizes the extra distortion introduced by the wedge between the female spouse's wage and her true productivity.

Suggested Citation

  • Cremer, Helmuth & Roeder, Kerstin, 2018. "Income taxation of couples, spouses' labor supplies and the gender wage gap," CEPR Discussion Papers 13159, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:13159
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    References listed on IDEAS

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    1. Helmuth Cremer & Jean-Marie Lozachmeur & Pierre Pestieau, 2012. "Income taxation of couples and the tax unit choice," Journal of Population Economics, Springer;European Society for Population Economics, vol. 25(2), pages 763-778, January.
    2. Henrik Kleven & Camille Landais & Jakob Egholt Søgaard, 2019. "Children and Gender Inequality: Evidence from Denmark," American Economic Journal: Applied Economics, American Economic Association, vol. 11(4), pages 181-209, October.
    3. Francine D. Blau & Lawrence M. Kahn, 2017. "The Gender Wage Gap: Extent, Trends, and Explanations," Journal of Economic Literature, American Economic Association, vol. 55(3), pages 789-865, September.
    4. Diamond, Peter A & Mirrlees, James A, 1971. "Optimal Taxation and Public Production: I--Production Efficiency," American Economic Review, American Economic Association, vol. 61(1), pages 8-27, March.
    5. Cremer, Helmuth & Lozachmeur, Jean-Marie & Maldonado, Dario & Roeder, Kerstin, 2016. "Household bargaining and the design of couples’ income taxation," European Economic Review, Elsevier, vol. 89(C), pages 454-470.
    6. Diamond, Peter A & Mirrlees, James A, 1971. "Optimal Taxation and Public Production II: Tax Rules," American Economic Review, American Economic Association, vol. 61(3), pages 261-278, June.
    7. Boskin, Michael J. & Sheshinski, Eytan, 1983. "Optimal tax treatment of the family: Married couples," Journal of Public Economics, Elsevier, vol. 20(3), pages 281-297, April.
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    More about this item

    Keywords

    Couples' income taxation; Gender wage gap; Optimal income taxation; Household labor supply;
    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
    • D10 - Microeconomics - - Household Behavior - - - General
    • J16 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Gender; Non-labor Discrimination
    • J22 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Time Allocation and Labor Supply

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