NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Integrating Expenditure and Tax Decisions: The Marginal Cost of Funds and the Marginal Benefit of Projects

Joel Slemrod, Shlomo Yitzhaki

NBER Working Paper No. 8196
Issued in March 2001
NBER Program(s):   PE

This paper seeks to clarify the extent to which the rule for providing public goods ought to correct for the distortionary cost of raising funds. We argue that, in evaluating public projects, the marginal cost of funds (MCF) concept must be supplemented by a symmetrical concept, which we label the marginal benefit of public projects, or MBP, which indicates the value to individuals of the dollars spent. Each of these concepts can be decomposed into two separate components, one reflecting efficiency and the other characterizing the distributional impact of the project itself or its financing. We conclude that efficiency of the financing cannot be ignored, that distributional considerations are also relevant, and that the availability and optimality of tax instruments is critical for evaluating the appropriateness of proceeding with a public good-cum financing project. However, one can construct special cases, as in Kaplow (1996), where the simple cost-benefit criterion applies.

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Document Object Identifier (DOI): 10.3386/w8196

Published: Slemrod, Joel and Shlomo Yitzhaki. "Integrating Expenditure And Tax Decisions: The Marginal Cost Of Funds And The Marginal Benefit Of Projects," National Tax Journal, 2001, v54(2,Jun), 189-201. citation courtesy of

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