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Optimal Savings Taxation when Individuals Have Different CRRA Utility Functions

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  • Alan Krause

Abstract

Recent empirical research has found that high-skill individuals tend to be less risk averse than low-skill individuals, which suggests that their respective constant relative risk aversion (CRRA) utility functions have different curvature. This paper examines the effects of this form of preference heterogeneity on the classic question of whether taxing savings is desirable when the government also implements optimal nonlinear income taxation. It is shown that taxing or subsidizing savings may be optimal, even if labour is separable from consumption in the utility function. Specifically, if the individuals discount rate is lower (resp. higher) than the market interest rate, it is optimal to tax (resp. subsidise) savings. If the individuals discount rate is equal to the market interest rate, zero taxation of savings is optimal. This basic relationship holds under both linear and nonlinear taxation of savings.

Suggested Citation

  • Alan Krause, 2014. "Optimal Savings Taxation when Individuals Have Different CRRA Utility Functions," Annals of Economics and Statistics, GENES, issue 113-114, pages 207-223.
  • Handle: RePEc:adr:anecst:y:2014:i:113-114:p:207-223
    DOI: 10.15609/annaeconstat2009.113-114.207
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    File URL: http://www.jstor.org/stable/10.15609/annaeconstat2009.113-114.207
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