Panels and the WTO Appellate Body have rendered a large number of complex and lengthy rulings on the Agreement on Subsidies and Countervailing Measures. The reasoning behind these rulings is often intimately linked to the underlying facts of a particular case and the methods of litigation adopted by the parties. Without guidance, it is difficult to find and research a specific subsidy issue quickly. This book provides an essential article-by-article commentary on the Agreement and sets out the law as it emerges from this body of rulings, providing the legal basis for further analysis of subsidy disciplines within the realms of economics and political science. It also includes a useful summary of the negotiating history and the links to other WTO Agreements such as GATT 1994. This important reference work will appeal to international trade lawyers, government officials, researchers, students of international trade law, business associations and NGOs.