Antidumping & Countervailing Duties: A Guide

Antidumping (AD) and countervailing (CVD) duties are extra import duties the United States imposes to offset two specific unfair trade practices — selling goods below fair value, and selling goods that foreign governments subsidize. They are separate from ordinary tariffs and from Section 232 or 301 measures, and they can reach rates far higher than a normal duty. For an importer, the danger is that AD/CVD liability attaches to the goods, by country and product scope — not to anything you did — so a shipment can be swept into an order you never saw coming.

What AD and CVD Duties Target

The two duties address different abuses but run on the same track.

• Antidumping duties apply when a foreign producer sells merchandise in the U.S. at less than fair value — below its home-market price or its cost of production. The AD duty is set to the dumping margin, the gap between the U.S. price and fair value.
• Countervailing duties apply when a foreign government provides a countervailable subsidy — a grant, tax break, cheap loan, or similar benefit — to producers or exporters. The CVD is set to the amount of that subsidy.

Who Runs the System

AD/CVD cases are administered under Title VII of the Tariff Act of 1930 by two federal agencies working in tandem, with a third collecting the money:

• The U.S. Department of Commerce (International Trade Administration) decides whether dumping or subsidization is occurring and calculates the margin or subsidy rate.
• The U.S. International Trade Commission (ITC) decides whether a U.S. industry is suffering material injury, or the threat of it, because of the imports.
• U.S. Customs and Border Protection (CBP) enforces the resulting orders at the border — suspending liquidation, collecting cash deposits, and ultimately assessing the final duties.

An order issues only if both Commerce (dumping or subsidy) and the ITC (injury) reach affirmative findings. If either says no, there is no order.

How a Case Becomes an Order

The process usually starts with a petition from a domestic industry and moves on a statutory timeline:

1. Petition and initiation. A U.S. industry petitions Commerce and the ITC; Commerce decides whether to initiate.
2. Preliminary determinations. The ITC makes a preliminary injury finding; Commerce makes a preliminary dumping or subsidy finding and can order cash deposits to begin.
3. Final determinations. Both agencies issue final findings.
4. Order. If both are affirmative, Commerce issues the AD or CVD order and directs CBP to collect.

The Part That Surprises Importers: Retrospective Assessment

The U.S. uses a retrospective duty system, which is unusual and easy to misjudge. When you import subject merchandise, you pay an estimated cash deposit at the rate then in effect — but that is not the final bill. Commerce sets the final duty later, through an annual administrative review, and the real rate can come out higher or lower than the deposit. If it is higher, you owe the difference, sometimes long after the goods sold. Importers who treat the cash-deposit rate as the final cost can be badly caught out.

Two more traps are worth flagging. Rates are producer- and exporter-specific, so sourcing the same product from a different factory can change your exposure entirely. And Commerce runs anti-circumvention and scope inquiries, so goods routed through a third country or tweaked to dodge an order can still be pulled in.

How Importers Stay Compliant

AD/CVD risk is manageable if you check for it before you buy, not after the goods arrive.

• Screen scope up front. Before sourcing, check whether the product and country fall within an existing or pending order. Scope turns on a precise product description and the tariff classification, so confirm both.
• Know your supplier’s rate. Because duties are exporter-specific, identify the exact producer and its assigned rate, not just the country.
• Watch the reviews. Track the annual administrative reviews that can change your final rate, and reserve for the difference.
• Request a scope ruling when uncertain. If it is unclear whether your goods are covered, ask Commerce for a formal scope ruling rather than guessing.
• Keep clean records. Origin, classification, and supplier documentation are what you produce when CBP questions an entry — and a customs broker handles the filing, but the importer of record remains legally responsible.

Frequently Asked Questions

What is the difference between antidumping and countervailing duties?

Antidumping duties offset goods sold below fair value; the duty equals the dumping margin. Countervailing duties offset goods that benefit from foreign government subsidies; the duty equals the subsidy rate. Both arise under the Tariff Act of 1930.

Who decides whether AD/CVD duties apply?

The Department of Commerce determines dumping or subsidization and sets the rate; the U.S. International Trade Commission determines whether the imports injure a U.S. industry. An order issues only if both findings are affirmative, and CBP collects the duties.

Why might my final AD/CVD bill differ from what I deposited?

The U.S. uses a retrospective system. You pay an estimated cash deposit at import, but Commerce sets the final duty later through an annual administrative review. The final rate can be higher or lower than your deposit.

How do I know if my product is subject to an AD/CVD order?

Check the product and country against existing orders, focusing on the order’s scope language and the tariff classification. If coverage is unclear, request a formal scope ruling from Commerce before importing.

AD/CVD exposure attaches to the goods and can dwarf an ordinary duty — and the retrospective system means the bill can land long after the sale. Reidel Law Firm provides import and export compliance counsel, including scope screening and duty-exposure analysis, for a predictable flat fee: get a flat-fee compliance memo before your next entry.