¦ noun a country which has been granted the most favourable trading terms available by another country.

I. A commitment that a country will extend to another country the lowest tariff rates it applies to any other country. All contracting parties undertake to apply such treatment to one another under Article I of GATT. When a country agrees to cut tariffs on a particular product imported from one country, the tariff reduction automatically applies to imports of this product from any other country eligible for most-favored nation treatment. This principle of nondiscriminatory treatment of imports appeared in numerous bilateral trade agreements prior to establishment of GATT. A country is under no obligation to extend MFN treatment to another country unless both are bilateral contracting parties of the General Agreement on Tariffs and Trade or MFN treatment is specified in a bilateral agreement.

II. When one country accords another most-favored-nation status, it agrees to extend that country the same trade concessions it grants to any other MFN recipients. For example, in the tariff area, goods from a country accorded MFN status by the U.S. would be assessed the lower column 1 duties in the U.S. tariff schedule. This concept may apply to non-tariff measures as well. GATT members have agreed to accord each other MFN status. Preferential treatment accorded to developing countries, customs unions, and free trade areas all represent allowable exceptions to the MFN concept.