A supplier tells you: "I checked. Our HTS code isn't on the antidumping order's list." It sounds like the end of the question, but the order itself says otherwise. In antidumping duty scope language, the HTS numbers are listed for convenience, and the written description of the merchandise is what decides coverage. An antidumping duty (AD) is an extra duty the US places on a product from a specific country after the Department of Commerce finds it was sold in the US below fair value and the US International Trade Commission finds that a US industry was injured.
Quick look
- The importer of record pays antidumping duties, not the foreign factory.
- HTS numbers in an order are a reference. The written scope description is what counts.
- A product can fall inside an order even when its HTS code isn't listed, and outside it even when the code is listed.
- The cash deposit paid at entry is an estimate. The final duty can be set a year or more later.
- If your supplier pays or refunds the duty for you, the duty can go up.
- When coverage is unclear, Commerce can issue a formal scope ruling.
[Photo placeholder: main image, to be taken by the company. Suggested alt: Orientwings team comparing a product spec sheet with an antidumping order scope]
What an Antidumping Order Is, and Who Pays
An antidumping order comes out of two findings. The Department of Commerce determines that imports from a country were sold in the US at less than fair value, and the US International Trade Commission determines that a US industry was materially injured by those imports. Commerce then issues the order, and US Customs and Border Protection (CBP) collects the duty when the goods are imported.
The duty is owed by the US importer of record. Your supplier's quote, your freight bill, and your margin all sit on top of it. The rates can be large. In July 2024, Commerce issued antidumping orders on mattresses from eight countries. For Taiwan, every producer and exporter received the same rate: 624.50% (89 FR 56851). At that level, a single wrong call on coverage can cost more than the goods.
The HTS List in an Antidumping Order Is "for Convenience"
Most antidumping orders end their scope section with a list of HTS subheadings, followed by a sentence like this one from the mattress orders: "Although the HTSUS subheadings are provided for convenience and customs purposes, the written description of the merchandise subject to these orders is dispositive."
That sentence cuts both ways:
- A product whose HTS code is not on the list can still be covered if it matches the written description.
- A product whose HTS code is on the list can still be outside the order if an exclusion in the scope applies to it.
Customs classification rulings don't settle the question either. Under 19 CFR 351.225(k)(1)(ii), CBP rulings are a secondary source when Commerce interprets scope, and where they conflict with the primary sources, the primary sources govern.
How Commerce Reads Antidumping Duty Scope
Commerce starts with the scope language itself, including any products the order expressly excludes. If that language is dispositive, Commerce can decide on that basis alone (19 CFR 351.225(k)(1)).
When the language leaves room for doubt, Commerce may look at primary sources: the descriptions in the original petition and investigation, its own earlier scope rulings, and the ITC's determinations. Secondary sources include other agency determinations, CBP rulings, industry usage, and dictionaries.
The mattress orders show how an ambiguity can arise. They define a mattress as an assembly that at a minimum includes a "core," which "may consist of innersprings, foam, other resilient filling, or a combination." Separately, they exclude products already covered by the antidumping orders on uncovered innerspring units from China, South Africa, and Vietnam. So what about an uncovered innerspring unit made in a fourth country? The HTS list doesn't answer that. The answer depends on the scope language and how Commerce has read it before, and that's the kind of question worth settling formally before the goods ship.
[Photo placeholder: to be taken by the company. Suggested alt: Printed antidumping order scope text with the exclusions section highlighted]
The Cash Deposit Isn't the Final Duty
At entry, the importer pays a cash deposit of estimated antidumping duties. That number isn't final. The US uses a retrospective system: final liability is set after the goods are imported, usually through an administrative review that covers a defined period (19 CFR 351.212(a)).
- If nobody requests a review, duties are generally assessed at the cash deposit rate in effect when the goods were entered (19 CFR 351.212(c)).
- If a review is requested, the final rate can come out higher or lower than the deposit, and the difference is billed or refunded with interest.
For a buyer, that means the landed cost on an AD-covered product is an estimate on the day you place the order. A bill for additional duty can arrive long after the goods have been sold. Our article on the real landed cost of a shipment covers the other costs that sit behind freight.
When a Supplier Offers to Cover the Duty
Some suppliers offer to absorb the antidumping duty, either by paying it or by refunding it to the importer afterward. The regulations treat that offer differently than most buyers expect.
Before liquidation, the importer must certify to CBP whether it has been reimbursed, or has any agreement to be reimbursed, by the manufacturer, producer, seller, or exporter for antidumping duties (19 CFR 351.402(f)(2)). If it has, Commerce deducts the reimbursed amount from the export price when calculating the dumping margin (19 CFR 351.402(f)(1)). A lower export price means a larger margin, so the duty on those goods can rise. An offer to cover the duty can end up costing the importer more than the duty it was meant to cover.
Four Checks Before You Place the Order
- Find out whether an order exists. Commerce and CBP both run AD/CVD search tools, and the ITC publishes a list of orders in effect. Search by product and by country of origin.
- Read the scope text, not just the HTS list. The full scope, including exclusions, is published with the order in the Federal Register.
- Compare your product's actual specifications against the description. Materials, construction, dimensions, and end use all matter. Ask your customs broker for a written opinion rather than a verbal one.
- If it's still unclear, ask Commerce for a scope ruling. An interested party can file a scope ruling application with a detailed product description, photos, specifications, the HTS classification, and the production process (19 CFR 351.225(c)). Commerce normally issues a final ruling within 120 days of initiating the inquiry, and can extend that to no more than 300 days for good cause (19 CFR 351.225(e)).
Two points about scope rulings are easy to miss. While an inquiry is open, Commerce directs CBP to apply the cash deposit rate that would apply if the product were covered (19 CFR 351.225(l)(1)). And a ruling that a product is covered means it has always been covered by that order (19 CFR 351.225(a)), so the answer reaches back to earlier entries.
Changing a product's declared origin to get around an order is a separate problem with its own enforcement process. Our article on country of origin and transshipment explains how CBP investigates evasion.
Common questions from importers
If my HTS code isn't listed in the antidumping order, am I safe?
Not necessarily. The written scope description decides coverage. The HTS list is a reference.
Is the cash deposit the final antidumping duty?
No. The final amount is usually set later in an administrative review, and it can be higher or lower than the deposit.
Can my supplier pay the antidumping duty for me?
The importer has to certify to CBP whether it was reimbursed. If it was, Commerce deducts that amount from the export price, which can raise the duty.
How long does a scope ruling take?
Commerce normally issues a final ruling within 120 days of initiating the inquiry. It can extend the deadline to no more than 300 days.
Antidumping risk is easiest to manage before the purchase order is signed. Once the goods are on the water, the options narrow. If you are sourcing a product that may fall under an antidumping order and want to understand the data behind the decision, get in touch with our team.
Further reading
- Country of Origin: Substantial Transformation and Transshipment
- Continuous Bond vs. Single Entry Bond: Which Do You Need?
- ISF Filing and Bond Claims: What Your Customs Bond Misses
- Market and Customs Data Analysis (Decision-Making Support)
This article is general information, not legal advice. Sources: 19 CFR 351.212, 351.225, and 351.402 (eCFR, current text); Federal Register Vol. 89, p. 56851 (July 11, 2024); CBP AD/CVD program page. Checked October 14, 2026.