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Optimal Dynamic Nonlinear Income Taxes with No Commitment

  • Marcus Berliant

    (Washington University in St. Louis)

  • John Ledyard

    (California Institute of Technology)

We wish to study optimal dynamic nonlinear income taxes. Do real world taxes share some of their features? What policy prescriptions can be made? We study a two period model, where the consumers and government each have separate budget constraints in the two periods, so income cannot be transferred between periods. Labor supply in both periods is chosen by the consumers. The government has memory, so taxes in the first period are a function of first period labor income, while taxes in the second period are a function of both first and second period labor income. The government cannot commit to future taxes. Time consistency is thus imposed as a requirement. The main results of the paper show that time consistent incentive compatible two period taxes involve separation of types in the first period and a differentiated lump sum tax in the second period, provided that the discount rate is high or utility is separable between labor and consumption. In the natural extension of the Diamond (1998) model with quasi-linear utility functions to two periods, an equivalence of dynamic and static optimal taxes is demonstrated, and a necessary condition for the top marginal tax rate on first period income is found.

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File URL: http://128.118.178.162/eps/pe/papers/0403/0403004.pdf
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Paper provided by EconWPA in its series Public Economics with number 0403004.

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Length: 28 pages
Date of creation: 19 Mar 2004
Date of revision: 21 Jun 2005
Handle: RePEc:wpa:wuwppe:0403004
Note: Type of Document - pdf; pages: 28
Contact details of provider: Web page: http://128.118.178.162

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  1. Diamond, Peter A, 1998. "Optimal Income Taxation: An Example with a U-Shaped Pattern of Optimal Marginal Tax Rates," American Economic Review, American Economic Association, vol. 88(1), pages 83-95, March.
  2. Daron Acemoglu & Mikhail Golosov & Aleh Tsyvinski, 2007. "Political Economy of Mechanisms," Levine's Bibliography 321307000000000886, UCLA Department of Economics.
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  12. Narayana R. Kocherlakota, 2005. "Zero Expected Wealth Taxes: A Mirrlees Approach to Dynamic Optimal Taxation," Econometrica, Econometric Society, vol. 73(5), pages 1587-1621, 09.
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  16. Benhabib, Jess & Rustichini, Aldo, 1997. "Optimal Taxes without Commitment," Journal of Economic Theory, Elsevier, vol. 77(2), pages 231-259, December.
  17. Marek Kapicka, 2006. "Optimal Income Taxation with Human Capital Accumulation and Limited Record Keeping," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 9(4), pages 612-639, October.
  18. Roberts, Kevin, 1984. "The Theoretical Limits of Redistribution," Review of Economic Studies, Wiley Blackwell, vol. 51(2), pages 177-95, April.
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