WTO Constraints on Domestic Support in Agriculture: Past and Future

The domestic support provisions in the WTO Agreement on Agriculture originate in the 1958 Haberler Report. Economic analysis often overlooks the agreement's legally important distinctions. Few domestic support issues lead to dispute settlement proceedings. The Doha negotiations would result in more constraints on domestic support than the sole commitment on Total Aggregate Measurement of Support (AMS) in the present agreement: ceilings on overall trade-distorting support and blue box payments, and also product-specific caps. Some 18 members would reduce their Total AMS commitments, and 25 would reduce the de minimis percentages. Most members would not reduce their constraints at all or only little. If today's developing countries continue to grow as they did in recent decades, their capacity to support agriculture increases significantly. If they then choose to support agriculture as today's developed countries did at the same stage of economic development, the future WTO constraints on trade-distorting domestic support would allow them to provide considerably more such support than developed countries.