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Unit Versus Ad Valorem Taxes : The Private Ownership of Monopoly In General Equilibrium

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Author Info

  • Blackorby, Charles

    (Department of Economics,University of Warwick and GREQAM)

  • Murty, Sushama

    (Department of Economics, University ofWarwick)

Abstract

In an earlier paper [Blackorby and Murty; 2007] we showed that if a monopoly sector is imbedded in a general equilibrium framework and profits are taxed at one hundred percent, then unit (specific) taxation and ad valorem taxation are welfare-wise equivalent. In this paper, we consider private ownership of the monopoly sector. Given technical difficulties in making a direct general equilibrium comparison of unit and ad valorem taxation, we adopt a technique due to Guesnerie [1980] and Quinzii [1992] in a somewhat different context of increasing returns and non-convex economies to show that neither ad valorem taxation nor unit taxation Pareto dominates the other; although, generally, the two are not welfare-wise equivalent.

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Bibliographic Info

Paper provided by University of Warwick, Department of Economics in its series The Warwick Economics Research Paper Series (TWERPS) with number 797.

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Length: 40 pages
Date of creation: 2007
Date of revision:
Handle: RePEc:wrk:warwec:797

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Keywords: Ad valorem taxes ; unit taxes ; monopoly;

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  1. Sofia Delipalla & Michael Keen, 1991. "The Comparison Between Ad Valorem and Specific Taxation under Imperfect Competition," Working Papers 821, Queen's University, Department of Economics.
  2. 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.
  3. Michael Keen, 1998. "The balance between specific and ad valorem taxation," Fiscal Studies, Institute for Fiscal Studies, vol. 19(1), pages 1-37, February.
  4. 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.
  5. Ben Lockwood, 2004. "Competition in Unit vs. Ad Valorem Taxes," International Tax and Public Finance, Springer, vol. 11(6), pages 763-772, November.
  6. Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680, July.
  7. Guesnerie Roger & Laffont Jean-jacques, 1978. "Taxing price makers," CEPREMAP Working Papers (Couverture Orange) 7806, CEPREMAP.
  8. 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.
  9. Blackorby, Charles & Diewert, W E, 1979. "Expenditure Functions, Local Duality, and Second Order Approximations," Econometrica, Econometric Society, vol. 47(3), pages 579-601, May.
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Cited by:
  1. Laszlo Goerke, 2011. "Commodity Tax Structure under Uncertainty in a Perfectly Competitive Market," CESifo Working Paper Series 3339, CESifo Group Munich.
  2. 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.

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