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Aggregate Savings When Individual Income Varies

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  • Martin Floden

    (Stockholm School of Economics)

Abstract

This paper examines aggregate savings in a general equilibrium model where infinitely lived households face volatile (and possibly uncertain) income paths, hold a risk-free asset, and face a borrowing constraint. I first show that the equilibrium capital stock in an economy without uncertainty, but where individual income varies, can be larger than in an economy where each household's income is constant. When individual income is stochastic and uninsurable, the equilibrium capital stock is always larger than when income is constant. This additional capital accumulation has sometimes been interpreted as precautionary savings, but I argue that much of the additional savings are generated by permanent-income motives in combination with strict borrowing constraints. (Copyright: Elsevier)

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File URL: http://dx.doi.org/10.1016/j.red.2007.06.003
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Bibliographic Info

Article provided by Elsevier for the Society for Economic Dynamics in its journal Review of Economic Dynamics.

Volume (Year): 11 (2008)
Issue (Month): 1 (January)
Pages: 70-82

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Handle: RePEc:red:issued:05-35

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Related research

Keywords: Equilibrium interest rate; Aggregate savings; Precautionary saving; Infinite horizon; General equilibrium;

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References

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  1. Huggett, Mark & Ospina, Sandra, 2001. "Aggregate precautionary savings: when is the third derivative irrelevant?," Journal of Monetary Economics, Elsevier, vol. 48(2), pages 373-396, October.
  2. R. Glenn Hubbard & Jonathan Skinner & Stephen P. Zeldes, 1994. "Precautionary Saving and Social Insurance," NBER Working Papers 4884, National Bureau of Economic Research, Inc.
  3. Floden, Martin, 2007. "A Note on the Accuracy of Markov-Chain Approximations to Highly Persistent AR(1)-Processes," Working Paper Series in Economics and Finance 656, Stockholm School of Economics.
  4. Gary Chamberlain & Charles A. Wilson, 2000. "Optimal Intertemporal Consumption Under Uncertainty," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 3(3), pages 365-395, July.
  5. Kimball, Miles S, 1990. "Precautionary Saving in the Small and in the Large," Econometrica, Econometric Society, vol. 58(1), pages 53-73, January.
  6. Kjetil Storesletten & Chris I. Telmer & Amir Yaron, 2000. "Consumption and Risk Sharing Over the Life Cycle," NBER Working Papers 7995, National Bureau of Economic Research, Inc.
  7. Aiyagari, S Rao, 1994. "Uninsured Idiosyncratic Risk and Aggregate Saving," The Quarterly Journal of Economics, MIT Press, vol. 109(3), pages 659-84, August.
  8. Huggett, Mark, 1993. "The risk-free rate in heterogeneous-agent incomplete-insurance economies," Journal of Economic Dynamics and Control, Elsevier, vol. 17(5-6), pages 953-969.
  9. Sandmo, Agnar, 1970. "The Effect of Uncertainty on Saving Decisions," Review of Economic Studies, Wiley Blackwell, vol. 37(3), pages 353-60, July.
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Cited by:
  1. Bianca De Paoli & Pawel Zabczyk, 2012. "Cyclical Risk Aversion, Precautionary Saving and Monetary Policy," CEP Discussion Papers dp1132, Centre for Economic Performance, LSE.
  2. Feigenbaum, James, 2011. "Precautionary saving or denied dissaving," Economic Modelling, Elsevier, vol. 28(4), pages 1559-1572, July.

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