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Constrained Inefficiency and Optimal Taxation with Uninsurable Risks

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  • Piero Gottardi

    (European University Instutite)

  • Atsushi Kajii

    (Institute of Economic Research, Kyoto University)

  • Tomoyuki Nakajima

    (Institute of Economic Research, Kyoto University)

Abstract

When individuals' labor and capital income are subject to uninsurable idiosyncratic risks, should capital and labor be taxed, and if so how? In a two period general equilibrium model with production, we derive a decomposition formula of the welfare e ects of these taxes into insurance and distribution e ects. This allows us to determine how the sign of the optimal taxes on capital and labor depend on the nature of the shocks, the degree of heterogeneity among consumers' income as well as on the way in which the tax revenue is used to provide lump sum transfers to consumers. When shocks a ect primarily labor income and heterogeneity is small, the optimal tax on capital is positive. However in other cases a negative tax on capital is welfare improving.

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Bibliographic Info

Paper provided by Kyoto University, Institute of Economic Research in its series KIER Working Papers with number 694.

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Length: 32pages
Date of creation: Jan 2010
Date of revision:
Handle: RePEc:kyo:wpaper:694

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  1. Mankiw, N. Gregory & Weinzierl, Matthew Charles & Yagan, Danny Ferris, 2009. "Optimal Taxation in Theory and Practice," Scholarly Articles 4263739, Harvard University Department of Economics.
  2. Stiglitz, Joseph E, 1982. "The Inefficiency of the Stock Market Equilibrium," Review of Economic Studies, Wiley Blackwell, vol. 49(2), pages 241-61, April.
  3. Julio Davila & Jay H. Hong & Per Krusell & José-Victor Rios Rull, 2005. "Constrained efficiency in the neoclassical growth model with uninsurable idiosyncratic shocks," Cahiers de la Maison des Sciences Economiques b05066, Université Panthéon-Sorbonne (Paris 1).
  4. Aiyagari, S Rao, 1995. "Optimal Capital Income Taxation with Incomplete Markets, Borrowing Constraints, and Constant Discounting," Journal of Political Economy, University of Chicago Press, vol. 103(6), pages 1158-75, December.
  5. George-Marios Angeletos, 2007. "Uninsured Idiosyncratic Investment Risk and Aggregate Saving," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 10(1), pages 1-30, January.
  6. Judd, Kenneth L., 1985. "Redistributive taxation in a simple perfect foresight model," Journal of Public Economics, Elsevier, vol. 28(1), pages 59-83, October.
  7. Chamley, Christophe, 1986. "Optimal Taxation of Capital Income in General Equilibrium with Infinite Lives," Econometrica, Econometric Society, vol. 54(3), pages 607-22, May.
  8. V. V. Chari & Patrick J. Kehoe, 1998. "Optimal fiscal and monetary policy," Staff Report 251, Federal Reserve Bank of Minneapolis.
  9. Piero Gottardi & Atsushi Kajii & Tomoyuki Nakajima, 2011. "Optimal taxation and constrained inefficiency in an infinite-horizon economy with incomplete markets," Economics Working Papers ECO2011/18, European University Institute.
  10. Hart, Oliver D., 1975. "On the optimality of equilibrium when the market structure is incomplete," Journal of Economic Theory, Elsevier, vol. 11(3), pages 418-443, December.
  11. Atsushi Kajii & Antonio Villanacci & Alessandro Citanna, 1998. "Constrained suboptimality in incomplete markets: a general approach and two applications," Economic Theory, Springer, vol. 11(3), pages 495-521.
  12. repec:hal:journl:halshs-00196183 is not listed on IDEAS
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Cited by:
  1. Piero Gottardi & Atsushi Kajii & Tomoyuki Nakajima, 2011. "Optimal taxation and constrained inefficiency in an infinite-horizon economy with incomplete markets," Economics Working Papers ECO2011/18, European University Institute.
  2. Sigrid Röhrs & Christoph Winter, 2011. "Wealth inequality and the optimal level of government debt," ECON - Working Papers 051, Department of Economics - University of Zurich.
  3. Acikgoz, Omer, 2013. "Transitional Dynamics and Long-run Optimal Taxation Under Incomplete Markets," MPRA Paper 50160, University Library of Munich, Germany.

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