An important result due to Atkinson and Stiglitz (1976) is that differential commodity taxation is not optimal in the presence of an optimal nonlinear income tax (given weak separability of utility between labor and all consumption goods). This article demonstrates that their conclusion holds regardless of whether the income tax is optimal. In particular, given any commodity tax and income tax system, differential commodity taxation can be eliminated in a manner that results in a Pareto improvement. Also, differential commodity taxation can be proportionally reduced so as to generate a Pareto improvement. In addition, for commodity tax reforms that do not eliminate or proportionally reduce differential taxation, a simple efficiency condition is offered for determining whether a Pareto improvement is possible.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
10407.
Length: Date of creation: Apr 2004 Date of revision: Handle: RePEc:nbr:nberwo:10407
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Find related papers by JEL classification: H21 - Public Economics - - Taxation, Subsidies, and Revenue - - - Efficiency; Optimal Taxation H24 - Public Economics - - Taxation, Subsidies, and Revenue - - - Personal Income and Other Nonbusiness Taxes and Subsidies
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