Taxation of Interest Income
Why is interest income taxed more heavily than other forms of capital income? This differential tax treatment has generated substantial tax arbitrage, resulting in lower tax revenue, efficiency costs, and apparently net gains to rich borrowers and net losses to poor lenders, together suggesting that this tax treatment makes no sense on welfare grounds. In examining this argument more formally, this paper reveals two omitted considerations that can help explain the existing tax treatment. First, the forecasted increase in the market interest rate results in a redistribution from rich borrowers to poor lenders. Yet this redistribution comes at no marginal efficiency cost, starting from a situation with no distortions to portfolio choice, so at the margin dominates further redistribution through the income tax. In addition, information about an individual's portfolio choice reveals information about her earnings ability, even controlling for observed labor income, if those who are more able tend to be less risk averse. By making use of this extra information about earnings ability, the tax system can be better tailored to redistribute from able to less able, for any given efficiency cost.
|Date of creation:||Feb 2003|
|Date of revision:|
|Publication status:||published as Gordon, Roger H. "Taxation Of Interest Income," International Tax and Public Finance, 2004, v11(1,Jan), 5-15.|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Naito, Hisahiro, 1999. "Re-examination of uniform commodity taxes under a non-linear income tax system and its implication for production efficiency," Journal of Public Economics, Elsevier, vol. 71(2), pages 165-188, February.
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NBER Working Papers
8029, National Bureau of Economic Research, Inc.
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- Roger H. Gordon & Laura Kalambokidis & Joel Slemrod, 2003.
"Do We Now Collect Any Revenue From Taxing Capital Income?,"
NBER Working Papers
9477, National Bureau of Economic Research, Inc.
- Gordon, Roger & Kalambokidis, Laura & Slemrod, Joel, 2004. "Do we now collect any revenue from taxing capital income?," Journal of Public Economics, Elsevier, vol. 88(5), pages 981-1009, April.
- Roger H. Gordon & Joel Slemrod, 1988. "Do We Collect Any Revenue from Taxing Capital Income?," NBER Chapters, in: Tax Policy and the Economy: Volume 2, pages 89-130 National Bureau of Economic Research, Inc.
- J. A. Mirrlees, 1971. "An Exploration in the Theory of Optimum Income Taxation," Review of Economic Studies, Oxford University Press, vol. 38(2), pages 175-208.
- Atkinson, A. B. & Stiglitz, J. E., 1976. "The design of tax structure: Direct versus indirect taxation," Journal of Public Economics, Elsevier, vol. 6(1-2), pages 55-75.
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