Antidumping (AD)

Definition

An antidumping duty (AD) is an extra import duty imposed on a specific product from a specific country when the Commerce Department determines that the foreign producer is selling the product in the US at less than fair value and the US International Trade Commission determines that domestic industry is materially injured. AD rates are producer-specific (each foreign producer typically gets its own cash-deposit rate) and are published in the Federal Register and CBP CSMS messages. AD duties stack on top of MFN and every other tariff layer. AD orders are reviewed annually in administrative reviews that can adjust the cash-deposit rate up or down. AD covers thousands of product-country combinations; the most affected categories are steel, chemicals, and consumer goods from China.