Unit Versus Ad Valorem Taxes: The Private Ownership of Monopoly In General Equilibrium
Employing a general equilibrium framework, Blackorby and Murty  prove that, with a monopoly and under one hundred percent profit taxation and uniform lump-sum transfers, the utility possibility sets of economies with unit and ad valorem taxes are identical. This welfare-equivalence is in contrast to most previous studies, which demonstrate the superiority of the ad valorem tax in a partial equilibrium framework. In this paper we relax the assumption of one hundred percent profit taxation and allow the consumers to receive profit incomes from ownership of shares in the monopoly firm. We find that, under certain regularity conditions, for any fixed vector of profit shares, the utility possibility sets of economies with unit and ad valorem taxes are not generally identical. But it does not imply that one completely dominates the other. Rather, the two utility possibility frontiers cross each other. Additionally, employing a standard partial equilibrium welfare analysis, we show that the Marshallian social surpluses resulting from the two tax structures are identical when the government can implement unrestricted transfers.
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- D. B. Suits & R. A. Musgrave, 1953. "Ad Valorem and Unit Taxes Compared," The Quarterly Journal of Economics, Oxford University Press, vol. 67(4), pages 598-604.
- Sofia Delipalla & Michael Keen, 1991.
"The Comparison Between Ad Valorem and Specific Taxation under Imperfect Competition,"
821, Queen's University, Department of Economics.
- Delipalla, Sofia & Keen, Michael, 1992. "The comparison between ad valorem and specific taxation under imperfect competition," Journal of Public Economics, Elsevier, vol. 49(3), pages 351-367, December.
- Blackorby, Charles & Murty, Sushama, 2007.
"Unit versus ad valorem taxes: Monopoly in general equilibrium,"
Journal of Public Economics,
Elsevier, vol. 91(3-4), pages 817-822, April.
- Blackorby, Charles & Murty, Sushama, 2006. "Unit Versus Ad Valorem Taxes : Monopoly In General Equilibrium," The Warwick Economics Research Paper Series (TWERPS) 761, University of Warwick, Department of Economics.
- Guesnerie Roger & Laffont Jean-jacques, 1978.
"Taxing price makers,"
CEPREMAP Working Papers (Couverture Orange)
- Charles Blackorby & Sushama Murty, 2010.
"Unit Versus Ad Valorem Taxes: The Private Ownership of Monopoly In General Equilibrium,"
1011, Exeter University, Department of Economics.
- Charles Blackorby & Sushama Murty, 2013. "Unit Versus Ad Valorem Taxes: The Private Ownership of Monopoly in General Equilibrium," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 15(4), pages 547-579, 08.
- Blackorby, Charles & Murty, Sushama, 2007. "Unit Versus Ad Valorem Taxes : The Private Ownership of Monopoly In General Equilibrium," The Warwick Economics Research Paper Series (TWERPS) 797, University of Warwick, Department of Economics.
- Ben Lockwood, 2004. "Competition in Unit vs. Ad Valorem Taxes," International Tax and Public Finance, Springer, vol. 11(6), pages 763-772, November.
- Blackorby, Charles & Diewert, W E, 1979. "Expenditure Functions, Local Duality, and Second Order Approximations," Econometrica, Econometric Society, vol. 47(3), pages 579-601, May.
- Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680, July.
- Skeath, Susan E. & Trandel, Gregory A., 1994. "A Pareto comparison of ad valorem and unit taxes in noncompetitive environments," Journal of Public Economics, Elsevier, vol. 53(1), pages 53-71, January.
- Michael Keen, 1998. "The balance between specific and ad valorem taxation," Fiscal Studies, Institute for Fiscal Studies, vol. 19(1), pages 1-37, February.
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