Agricultural market access: A moving target in the WTO negotiations?

This article analyzes the impact of multilateral market access liberalization of the Doha Round agricultural negotiations. At the center are the effects of variations in the magnitudes of tariff cuts, different tariff cutting formulas, the tariff capping as well as different numbers and width of tariff bands. The simulations are conducted with an extended version of the GTAP model and the GTAP database (6.0) including bound and applied rates and a module to cut tariffs at the 6-digit tariff line level. The results reveal that the heights of the tariff cuts and the kind of tiered formula applied are most important for the outcome of the Doha Round, while the width of tariff bands and the tariff capping only have a moderate influence on the countries' trade pattern and welfare. In contrast, the number of tariff bands is not important for the results.