Abstract: | Using a two-country model, we examine location choices by two domestic firms when they serve only the domestic market and their cost structures differ. The findings indicate that whether the firm that has a greater incentive for foreign direct investment is more or less efficient depends on the differences in domestic and foreign marginal costs, trade costs, and the presence of fixed costs. Plant locations may not be uniquely determined. In particular, a small change in trade costs may reverse plant location. Moreover, a decrease in transport costs in the presence of foreign direct investment may deteriorate domestic welfare. |