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On the Equivalence of Ad Valorem Tariffs and Specific Tariffs under Duopoly

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  • Koon Lam Shea
  • Esther Y. P. Shea

Abstract

Using a quantity conjectural variation model, this paper examines whether an ad valorem tariff and a specific tariff are equivalent under duopoly. We show that if the average per‐unit import tax is the same for the two tariffs, domestic output will be smaller while foreign output will be larger under an ad valorem tariff. We further show that for any value of a specific tariff, there is a Pareto‐superior ad valorem tariff for all values of conjectural variation except in the case of perfect competition where the two tariffs are equivalent.

Suggested Citation

  • Koon Lam Shea & Esther Y. P. Shea, 2006. "On the Equivalence of Ad Valorem Tariffs and Specific Tariffs under Duopoly," Review of International Economics, Wiley Blackwell, vol. 14(3), pages 445-451, August.
    • Handle: RePEc:bla:reviec:v:14:y:2006:i:3:p:445-451
    DOI: 10.1111/j.1467-9396.2006.00593.x
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    Cited by:

    1. Yungho Weng & Chih-Ming Hung, 2020. "Tariff escalation and de-escalation: the role of market structure," The Japanese Economic Review, Springer, vol. 71(2), pages 233-246, April.
    2. Hong Hwang & Chao-Cheng Mai & Ya-Po Yang, 2015. "Specific vs Ad Valorem Strategic Export Subsidies with Taxation Distortion," Review of Development Economics, Wiley Blackwell, vol. 19(4), pages 820-828, November.
    3. Laszlo Goerke, 2011. "Commodity tax structure under uncertainty in a perfectly competitive market," Journal of Economics, Springer, vol. 103(3), pages 203-219, July.
    4. Ya‐Po Yang & Qidi Zhang & Leonard F. S. Wang, 2022. "Tariff simplification, privatization, and welfare superiority," Metroeconomica, Wiley Blackwell, vol. 73(2), pages 683-707, May.
    5. Giorgos Stamatopoulos, 2021. "Bidding for tariff exemptions in international oligopolies," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 28(3), pages 515-532, June.
    6. Tomomichi Mizuno & Kazuhiro Takauchi & Takeshi Iida, 2011. "Better technology may be sold for a lower fee: The ad valorem tariff and licensing contract," Discussion Papers 1109, Graduate School of Economics, Kobe University.

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