Trading Blocs and Welfare: How Trading Bloc Members Are Affected by New Entrants


R. Scott Hacker ; Qaizar Hussain

Publication Date:

June 1, 1998

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Disclaimer: This Working Paper should not be reported as representing the views of the IMF.The views expressed in this Working Paper are those of the author(s) and do not necessarily represent those of the IMF or IMF policy. Working Papers describe research in progress by the author(s) and are published to elicit comments and to further debate


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.


Working Paper No. 1998/084



Publication Date:

June 1, 1998



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