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The Efficiency Cost of Increased Progressivity

Listed author(s):
  • Robert K. Triest

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.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 4535.

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Date of creation: Nov 1993
Publication status: published as Slemrod, Joel. Tax progressivity and income inequality. Cambridge; New York and Melbourne: Cambridge University Press, 1994.
Handle: RePEc:nbr:nberwo:4535
Note: PE
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