AD/CVD means anti-dumping and countervailing duties, also called special trade case duties. They offset unfairly low prices or foreign government subsidies, and they are set producer by producer, not as one flat rate for a tariff code.
Anti-dumping duty (AD) applies when a foreign producer sells into the US below fair value. Countervailing duty (CVD) applies when a producer benefits from a government subsidy that can be offset. Commerce and the International Trade Commission decide both after a formal investigation.
An AD/CVD rate belongs to a case, and to a producer or exporter within that case. The same HS code can carry very different rates, or none at all, depending on who made the goods and where.
A tariff code that appears on an AD/CVD case’s list is not proof that a shipment is covered. The written scope of the order decides that. Only Commerce, or a licensed broker reviewing the scope, can make that call for a specific product.
Look up the product’s HS code against active orders. If the code is listed, read the order’s scope language and identify the producer or exporter. If the scope or the producer is unclear, that is a point for a broker to confirm before filing.
The free Tariff Calculator checks a code against active AD/CVD orders. When the code appears on an order but scope or producer cannot be settled from what we hold, the result says so and does not assume.
Title VII of the Tariff Act of 1930: 19 U.S.C. 1673 (anti-dumping) and 19 U.S.C. 1671 (countervailing duties), administered by the Department of Commerce and the US International Trade Commission.
To see the stacked, cited answer for a specific entry date, use the free Tariff Calculator.