IMF Working Paper This is a Working Paper and the author(s) would welcome any comments on the present text. Citations should refer to a Working Paper o/the International Monetary Fund. The © 1998 International Monetary Fund views expressed are those of the author(s) and do not necessarily represent those of the Fund. WP/98/84 INTERNATIONAL MONETARY FUND IMF Institute Trading Blocs and Welfare: How Trading Bloc Members Are Affected by New Entrants Prepared by R. Scott Hacker and Qaizar Hussainl Authorized for distribution by B.R.H.S. Rajcoomar June 1998 Abstract This paper uses the three-country duopoly model to examine the effects of lowered trade barriers when a new entrant joins a trading bloc. There are two firms-a small-country firm and a large-country firm within the bloc-and three markets-two within and one (new entrant's) outside the bloc. The analysis generally shows greater gains for the small-country than for the large-country firm. The small-country firm will export more to the external country than the large-country firm. But if tariffs decline, the export share of the large-country firm will increase relative to the small-country firm's, though profits will improve more for the latter. JEL Classification Numbers: F15, FlO, D43, D60 Keywords: Trading Blocs, Duopoly, Tariffs Author's E-Mail Address:
[email protected] 1 R. Scott Hacker is at the Jbnkbping International Business School, Sweden. The authors are grateful to Mohsin Khan, Timo Valila, Philip Wong, Hassan Al-Atrash, Ashok Bardhan, Ernesto Stein, Thomas Dorsey, and Clas Wihlborg for valuable comments.