Antidumping & Countervailing Duties (AD/CVD): What Importers Need to Know
A practical importer guide to antidumping and countervailing duties, including investigations, scope, supplier-specific rates, and tariff stacking risk.
Antidumping duties (AD) are case-specific tariffs the United States imposes under 19 U.S.C. 1673 to offset merchandise sold in the U.S. at less than fair value, and countervailing duties (CVD) are case-specific tariffs imposed under 19 U.S.C. 1671 to offset unfair foreign government subsidies benefiting exported goods. Both are trade remedies set through formal investigations by the U.S. Department of Commerce and the U.S. International Trade Commission (USITC), and both stack on top of ordinary MFN duties, Section 122, Section 301, and Section 232. In the most severe active cases, combined AD and CVD rates have pushed effective duty burdens into triple-digit territory — turning an ordinary shipment into a catastrophic pricing mistake for importers who missed the exposure at the quoting stage.
Unlike a normal MFN duty rate, AD/CVD exposure is not a number you pull once and forget. It depends on the product scope, the country, the producer or exporter, the status of the order, and the current rate assigned through the trade-remedy process. When AD/CVD applies, it almost always stacks on top of every other program that already applies.
What are antidumping and countervailing duties?
Antidumping and countervailing duties are two related Title VII trade remedies used by the United States to offset unfair import competition:
- Antidumping duties (AD) under 19 U.S.C. 1673 offset merchandise sold in the U.S. at less than fair value.
- Countervailing duties (CVD) under 19 U.S.C. 1671 offset unfair foreign government subsidies benefiting exported goods.
They are not general tariffs. They are case-specific remedies created through formal investigations. A product can have a very low ordinary duty rate and still carry a punishing AD/CVD burden if it falls within an active order.
How does an AD/CVD investigation start?
AD/CVD investigations usually begin when a domestic industry files a petition claiming unfair imports are harming U.S. producers. The sequence looks like this:
- A petition is filed with Commerce and the USITC.
- Commerce evaluates dumping margins or subsidy rates.
- The USITC evaluates injury or threat of injury to the domestic industry.
- Preliminary determinations may trigger cash-deposit requirements.
- Final determinations can lead to an AD order, a CVD order, or both.
For importers, the practical takeaway is that duty exposure can begin before a case feels "final" in a business sense.
What roles do Commerce and the USITC play?
Commerce and the USITC split the investigation deliberately:
- Commerce calculates whether dumping or subsidization exists and sets duty rates.
- The USITC decides whether the domestic industry is materially injured or threatened by the imports.
You do not get an order unless both sides of that process line up. This matters because importers sometimes focus only on rate headlines. In reality, the case lives or dies on both the pricing-subsidy analysis and the injury analysis.
How are AD/CVD rates calculated?
AD/CVD rates are almost never a single national number. Possible structures include:
- a company-specific rate for a named producer or exporter
- a separate rate for reviewed respondents
- an all-others rate for companies not individually examined
- changed rates after administrative reviews
That means two shipments of similar goods from the same country can have very different deposit requirements if the supplier identity changes. Before you quote landed cost, always ask:
- Which producer made the goods?
- Which exporter is on the transaction?
- Does the case assign a company-specific rate?
- Are we relying on an all-others rate?
If you do not know the supplier's position inside the order structure, you do not fully know the duty exposure.
Why does scope matter as much as the rate?
Scope is the written legal boundary of an AD/CVD order — and it often matters more than the headline rate. A product may look similar to covered goods without being within scope. Or it may appear slightly modified and still remain covered because the scope language is broader than the marketing description.
Experienced teams do not stop at the product title. They compare:
- physical characteristics
- composition
- intended use
- manufacturing process
- HTS references in the order
- exclusion language
If there is real ambiguity, a formal scope ruling from Commerce is worth pursuing early.
How do you look up active AD/CVD orders?
Active AD/CVD orders should be researched through official government sources, not a one-tab Google search. Use:
- Commerce's ACCESS system (access.trade.gov) for case documents
- the USITC trade-remedy pages for investigation background
- CBP operational guidance and messaging
- broker and counsel review for scope interpretation
At minimum, your internal workflow should capture:
- the case name
- case number
- country
- order type (AD, CVD, or both)
- applicable producer or exporter rate
- scope notes
- latest review status
This is one of the few import topics where a spreadsheet with weak provenance can cost six figures per entry.
How do AD/CVD duties stack with other tariffs?
AD/CVD almost never replaces the rest of the duty stack. It adds to it. Your total landed cost may include:
- MFN duty
- Section 122
- Section 301 if Chinese-origin
- Section 232 if the product is covered
- AD duty
- CVD duty
- MPF, HMF, brokerage, and freight costs
For a Chinese industrial product under both AD and CVD, the effective total can easily exceed 100%. This is the point many finance teams miss when they hear, "The base duty is low."
Why don't AD/CVD orders just expire?
AD/CVD orders do not automatically fade away when market conditions change. Orders are subject to periodic review cycles, including sunset reviews, where the government asks whether revoking the order would likely lead to continuation or recurrence of dumping, subsidization, and injury.
For importers, that creates a planning problem:
- an old order can remain commercially relevant for years
- an order you hoped would expire may stay in place
- a rate you treated as stable may change through administrative review
Long-term sourcing decisions need more than a single snapshot of current rates.
What is AD/CVD circumvention and third-country risk?
AD/CVD circumvention is the practice of routing goods through a third country with minimal processing in order to avoid an existing order. It is not a clever logistics solution. It is a major compliance risk.
Warning signs include:
- the supplier suddenly changing shipping country without a meaningful manufacturing change
- vague claims that origin has changed because of relabeling or light assembly
- product specs that match covered goods too closely
- a factory refusing to document the production steps
Country of origin and circumvention analysis are separate from simple shipping geography.
What should importers do before placing orders?
Before placing orders for products in sectors with recurring trade-remedy activity, importers should run a seven-step AD/CVD risk process:
- Classify the product correctly.
- Identify likely AD/CVD case exposure by product and country.
- Confirm the producer and exporter identity.
- Check current deposit rates and review status.
- Model the full landed cost with all duty programs.
- Document the basis for your scope conclusion.
- Re-check before shipment if the case is active or under review.
This is slower than "just get the quote and ship," but much cheaper than discovering the order after the goods arrive.
Related TariffCenter.AI tools
- Look up base duty rates and chapter guidance with the free HS Code Lookup.
- Model the complete duty stack — including potential AD/CVD exposure — in the Duty Calculator.
- Compare sourcing options with the Sourcing Comparison Tool.