Document Type

Article

Publication Date

2025

Abstract

In this installment of Reflections With Reuven Avi-Yonah, Avi-Yonah examines the downsides of the realization requirement and potential solutions to them. In an excellent Tax Notes article, Steven Sheffrin recently mounted the most convincing defense of the realization requirement I have read. He explained that the case for taxing unrealized capital gains is based on the Haig- Simons definition of income. In this definition, income equals consumption plus savings when savings includes both realized and unrealized capital gains. If asset prices change because of changes in future cash flows, Haig-Simons income can provide an appropriate guide for designing tax policies.

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Reprinted with the permission of Tax Analysts

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