Fixing Capital Gains, Symmetry, Consistency and Correctness in the Taxation of Financial Instruments

David F. Bradford

No CESifo Working Paper No. 118, CESifo Working Paper Series from CESifo Group Munich

Abstract: An enormous amount of effort and ingenuity has been addressed to patching holes in the income tax attributable to realization accounting. A classic instance of the problem is the headaches created by capital gains, whereby the taxpayer can choose to postpone recognition of gain and accelerate recognition of loss (a practice known as cherry picking). Nowhere are the inconsistencies that result from realization accounting more pronounced than in the taxation of financial instruments, especially "derivatives" of familiar securities. This paper sets forth the requirements for income measurement rules based on realization that are "linear" in the sense that doubling a person's transactions will double the taxable income, and adding one set of transactions to another will result in the sum of the associated income. Under present realization conventions, the tax law cannot be linear because there would then be no limit on tax arbitrage profit via variations on borrowing with deductible interest and lending tax exempt. To focus on the principles, the paper assumes transactions are costless. In that case, it is shown that to deal with the intertemporal aspect of the problem requires virtually universal imputation of taxable interest income to basis (the taxpayer's cost of an asset). To deal with the risk aspect of the problem (lock- in and cherry picking) requires simply that the effective rate of tax on gains and losses be the same (not necessarily equal to the rate on intertemporal returns). A new method is proposed that satisfies the requirements for linear income measurement. It is shown that the retroactive taxation of gain devised by Alan Auerbach is a special case of the new approach (involving a zero effective rate of tax on gains and losses). Published in: Tax Law Review 50, 1996, pp. 731-785.

JEL-codes: H24 (search for similar items in EconPapers)
Date: 1996
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Working Paper: Fixing Capital Gains: Symmetry, Consistency and Correctness in the Taxation of Financial Instruments (1997)
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