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Cost Heterogeneity, Industry Concentration and Startegic Trade Policies

  • Van Long, N.
  • Soubeyran, A.

This paper shows that if domestic firms do not have identical unit costs, then the interplay between the Herfindahl index of concentration and the elasticity of the slope of the demand curve is of major importance in the determination of optimal trade policies. When the demand curve is concave, an export tax will shift the domestic industry's concentration in favor of lower cost firms, resulting in an improvement in allocative production efficiency.

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Paper provided by Universite Aix-Marseille III in its series G.R.E.Q.A.M. with number 96a39.

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Length: 20 pages
Date of creation: 1996
Date of revision:
Handle: RePEc:fth:aixmeq:96a39
Contact details of provider: Postal: G.R.E.Q.A.M., (GROUPE DE RECHERCHE EN ECONOMIE QUANTITATIVE D'AIX MARSEILLE), CENTRE DE VIEILLE CHARITE, 2 RUE DE LA CHARITE, 13002 MARSEILLE.
Phone: 04.91.14.07.70
Fax: 04.91.90.02.27
Web page: http://www.greqam.fr/Email:


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  1. Jonathan Eaton & Gene M. Grossman, 1983. "Optimal Trade and Industrial Policy Under Oligopoly," NBER Working Papers 1236, National Bureau of Economic Research, Inc.
  2. Kala Krishna & Marie Thursby, 1988. "Optimal Policies with Strategic Distortions," NBER Working Papers 2527, National Bureau of Economic Research, Inc.
  3. Brander, James A. & Spencer, Barbara J., 1984. "Trade warfare: Tariffs and cartels," Journal of International Economics, Elsevier, vol. 16(3-4), pages 227-242, May.
  4. Dixit, Avinash K, 1986. "Comparative Statics for Oligopoly," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 27(1), pages 107-22, February.
  5. Seade, J, 1985. "Profitable Cost Increases and the Shifting of Taxation : Equilibrium Response of Markets in Oligopoly," The Warwick Economics Research Paper Series (TWERPS) 260, University of Warwick, Department of Economics.
  6. Lahiri, Sajal & Ono, Yoshiyasu, 1988. "Helping Minor Firms Reduces Welfare," Economic Journal, Royal Economic Society, vol. 98(393), pages 1199-1202, December.
  7. Dixit, Avinash, 1984. "International Trade Policy for Oligopolistic Industries," Economic Journal, Royal Economic Society, vol. 94(376a), pages 1-16, Supplemen.
  8. Tran Huu Dung, 1993. "Optimal Taxation and Heterogeneous Oligopoly," Canadian Journal of Economics, Canadian Economics Association, vol. 26(4), pages 933-47, November.
  9. Bergstrom, Theodore C & Varian, Hal R, 1985. "When Are Nash Equilibria Independent of the Distribution of Agents' Characteristics?," Review of Economic Studies, Wiley Blackwell, vol. 52(4), pages 715-18, October.
  10. James A. Brander & Barbara J. Spencer, 1984. "Export Subsidies and International Market Share Rivalry," NBER Working Papers 1464, National Bureau of Economic Research, Inc.
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