Plurilateral Trade Agreement

A plurilateral trade agreement sits between a bilateral deal and a fully multilateral one: it is negotiated under the auspices of the World Trade Organization (WTO) or a similar forum but applies only to the countries that choose to join. Non-signatory WTO members are not bound by its rules and, crucially, do not automatically receive its benefits — a key departure from the most-favored-nation (MFN) treatment that governs most WTO commitments.

The legal basis sits in Annex 4 of the Marrakesh Agreement Establishing the WTO (1994), which lists the agreements considered plurilateral. Two remain in force today: the Agreement on Government Procurement (GPA), revised in 2012, and the Agreement on Trade in Civil Aircraft (1979). Two earlier Annex 4 agreements — on dairy and bovine meat — were terminated in 1997.

Adding a new agreement to Annex 4 requires a consensus decision of the WTO Ministerial Conference, which has made formal expansion politically difficult. As a workaround, members have pursued "Joint Statement Initiatives" (JSIs) since the 2017 Buenos Aires Ministerial — open plurilateral negotiations on e-commerce, investment facilitation, services domestic regulation, and MSMEs. The legal status of JSIs is contested: India and South Africa have argued they cannot be incorporated into the WTO framework without consensus.

Plurilaterals are attractive when full multilateral consensus is unreachable but a critical mass of members wants to move forward. Critics, however, warn they erode the single undertaking principle that defined the Uruguay Round and may marginalize developing countries that lack the capacity to join.

Examples of plurilateral or critical-mass deals concluded outside Annex 4 include the Information Technology Agreement (ITA, 1996; expanded 2015), which uses MFN to extend benefits to all WTO members despite being signed by a subset.