GATT Article I

Article I of the General Agreement on Tariffs and Trade (GATT 1947), incorporated into the WTO framework as GATT 1994 under Annex 1A of the Marrakesh Agreement (1994), establishes the most-favoured-nation (MFN) treatment obligation that is the cornerstone of the multilateral trading system. Its text mandates that with respect to customs duties, charges on imports and exports, the method of levying such charges, and all rules and formalities connected with importation and exportation, "any advantage, favour, privilege or immunity granted by any contracting party to any product originating in or destined for any other country shall be accorded immediately and unconditionally to the like product originating in or destined for the territories of all other contracting parties." Together with the national-treatment rule in Article III, MFN forms the twin pillar of non-discrimination on which the GATT/WTO edifice rests.

The principle operates externally: it prohibits a member from discriminating between its trading partners. If India lowers its tariff on automobiles imported from Japan, the same reduced tariff must apply automatically to like automobiles from Germany, Korea or any other WTO member, without demand for reciprocal concession. The obligation is unconditional and immediate, and it attaches at the border to "like products" — a concept elaborated through Appellate Body jurisprudence in disputes such as EC – Asbestos (2001) and Canada – Autos (2000), which clarified that MFN covers both de jure and de facto discrimination. Article I is not absolute: it is qualified by significant exceptions, principally Article XXIV (customs unions and free-trade areas such as the EU and NAFTA/USMCA), the 1979 Enabling Clause permitting the Generalized System of Preferences (GSP) and special treatment for developing countries, Article XX general exceptions, and Article XXI security exceptions invoked, for instance, by Russia in Russia – Traffic in Transit (2019).

In landmark application, the WTO panel and Appellate Body in EC – Tariff Preferences (2004) held that the European Communities' GSP drug-arrangements scheme violated Article I because preferences were not extended to all similarly situated developing countries, though they could be justified under the Enabling Clause only if granted on objective, non-discriminatory criteria. As of 2026, Article I remains fully operative, but its discipline is strained by the proliferation of preferential and regional trade agreements and by unilateral tariff measures — notably the US Section 232 and Section 301 tariffs — that test the boundaries of MFN and the Article XXI security defence, while the paralysis of the Appellate Body since December 2019 weakens enforcement.

For the examination, GATT Article I is high-yield in international economics, international organisations and international law papers. UPSC General Studies Paper II and III, the FSOT economics cluster, and CSS International Relations frequently test the distinction between MFN (Article I, external non-discrimination) and national treatment (Article III, internal non-discrimination). Typical question angles ask candidates to define MFN, list its exceptions (Article XXIV, the Enabling Clause), explain why GSP does not violate it, and assess the WTO non-discrimination architecture. Cite the article number, the Marrakesh Agreement (1994), and at least one dispute precedent to demonstrate precision.