The Efficiency Cost of Increased Progressivity

Robert Triest

No 4535, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: Increases in income tax progressivity generally entail some efficiency cost due to increased distortion of individuals' labor supply decisions. This paper quantifies the magnitude of the efficiency cost of several policies which would increase the progressivity of the U.S. individual income tax. The analysis differs from previous work on this topic in allowing for complex nonlinear tax schedules similar to those which actually exist. The efficiency cost of increased progressivity is found to vary considerably with the type of tax reform considered. Expanding the earned income tax credit (EITC) is found to be a particularly efficient means of increasing progressivity. Using the labor supply parameters I consider most reasonable, I find that the efficiency cost of expanding the EITC financed by increased tax rates in the intermediated brackets is less than 20 cents per dollar transferred from the upper income groups to the lower income groups.

JEL-codes: H20 (search for similar items in EconPapers)
Date: 1993-11
Note: PE
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Citations: View citations in EconPapers (10)

Published as Slemrod, Joel. Tax progressivity and income inequality. Cambridge; New York and Melbourne: Cambridge University Press, 1994.

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