Market structure, pigouvian taxation, and welfare

Rajeev Goel and Edward Hsieh

Atlantic Economic Journal, 1997, vol. 25, issue 2, 128-138

Abstract: Using a short-run partial equilibrium model of social welfare, this paper examines the social welfare implications of changing Pigouvian taxes under three markets: perfect competition, monopoly, and Cournot oligopoly. The result for perfect competition supports the earlier finding that Pigouvian taxation increases social welfare [Buchanan, 1969]. However, in contrast to the previous result that Pigouvian taxes lower welfare under monopoly, the authors show that if the noncompetitive distortion is small, these taxes might still be useful in correcting monopoly-generated externalities and in improving social welfare. Cournot firms react to the tax depending upon their individual perceptions of the gain in post-tax marginal revenue. Policy implications of the study's results are discussed. Copyright International Atlantic Economic Society 1997

Date: 1997
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DOI: 10.1007/BF02298380

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