We explore the evolution of market access conditions in the textile and clothing sectors (T&C). Working with bilateral trade data on textile and clothing trade, underlying tariffs, and the coverage of quotas under the WTO’s Agreement on Textiles and Clothing (ATC) we first develop a non-linear least squares estimation framework for calculating the tax equivalent of ATC quota restrictions on bilateral trade. We also compare these non-tariff barrier estimates to earlier estimates for the years since the inception of the ATC, to gauge the extent to which the ATC has actually led to quota liberalization.