This website uses cookies.

By clicking the "Accept" button or continuing to browse our site, you agree to first-party and session-only cookies being stored on your device to enhance site navigation and analyze site performance and traffic. For more information on our use of cookies, please see our Privacy Policy.

  1. Home
  2. Journals
  3. American Economic Journal: Applied Economics
  4. Forthcoming Articles
  5. Optimal Sin Taxation and Market Power

American Economic Journal:
Applied Economics

ISSN 1945-7782 (Print) | ISSN 1945-7790 (Online)

Optimal Sin Taxation and Market Power

  • Martin O'Connell
  • Kate Smith
American Economic Journal: Applied Economics (Forthcoming)

Abstract

We study how market power impacts the efficiency and redistributive properties of sin taxation, with an empirical application to sugar-sweetened beverage taxation. We estimate an equilibrium model of the UK drinks market, which we embed in a tax design framework to solve for optimal sugar-sweetened beverage tax policy. Positive price-cost margins for drinks create inefficiencies that lower the optimal rate compared with a perfectly competitive setting. Since profits mainly accrue to the rich, this is partially mitigated under social preferences for equity. Overall, ignoring market power when setting tax policy leads to welfare gains 40% below those at the optimum.

Downloads