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Behavioral Economics and Fundamental Tax Reform


Edward J. McCaffery


USC Gould School of Law

April 2006

USC CLEO Research Paper No. C06-4
USC Law Legal Studies Paper No. 06-8

Abstract:     
The most common use of the insights of behavioral economics in the cause of fundamental tax reform has been to argue for the employment of ad hoc tax-favored savings vehicles - such as individual retirement accounts (IRAs), medical, and educational savings accounts, and so on - within an income-tax framework. There is no reason under a rational life-cycle model of individual savings behavior why these ad hoc vehicles should work, to increase savings on the micro (individual) or macro (collective social) levels, whether they follow the postpaid approach of traditional IRAs or the prepaid approach of Roth IRAs. Prepaid accounts generate a windfall gain to existing savers, and offer no cash-flow relief for current non-savers to help them save. Postpaid accounts can be easily arbitraged by borrowing, or dissaving. Proponents of these plans thus point to lessons from behavioral economics, arguing that myopic individuals who use mental accounts might be led to save by the special vehicles. This essay takes exception to this standard view. It argues that this view of matters misconceives basic principles of behavioral economics, using ad hoc findings in an ad hoc fashion to justify ad hoc, incremental reform. Best understood, behavioral economics suggests that ad hoc tax favored plans will not work. This counter-theory is supported by the data, which show, broadly, decades of ad hoc tax-favored vehicles within the Internal Revenue Code, with more apparently on the way, matched by convincing evidence of little or no savings by most Americans, and little savings in the aggregate. The essay concludes by suggesting that a happier, more stable marriage of behavioral economics and fundamental tax reform suggests fundamental, not incremental, reform of the tax system.

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Date posted: April 28, 2006  

Suggested Citation

McCaffery, Edward J., Behavioral Economics and Fundamental Tax Reform (April 2006). USC CLEO Research Paper No. C06-4; USC Law Legal Studies Paper No. 06-8. Available at SSRN: http://ssrn.com/abstract=899302 or http://dx.doi.org/10.2139/ssrn.899302

Contact Information

Edward J. McCaffery (Contact Author)
USC Gould School of Law ( email )
699 Exposition Boulevard
Los Angeles, CA 90089
United States
213-740-2567 (Phone)
213-740-5502 (Fax)

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