Antidumping and countervailing duties work as extra charges the federal government adds on top of normal tariffs when foreign goods are sold in the United States at unfairly low prices or benefit from foreign government subsidies. Two agencies run the system in parallel: the Department of Commerce calculates how much a product is being dumped or subsidized, and the International Trade Commission decides whether the domestic industry is being hurt. If both come back with a “yes,” Commerce issues an order and U.S. Customs and Border Protection starts collecting the duty at the border. The framework sits in the Tariff Act of 1930, codified in Title 19 of the U.S. Code.1Office of the Law Revision Counsel. 19 USC Ch. 4 – Tariff Act of 1930
What an Antidumping Duty Targets
An antidumping duty applies when a foreign company sells goods in the United States at less than “fair value” and those sales injure or threaten to injure a domestic industry.2Office of the Law Revision Counsel. 19 USC 1673 – Antidumping Duties Imposed Commerce compares the price charged in the United States against the price the same product sells for in the producer’s home market. Where that comparison isn’t workable, it compares against the cost of production. The gap is the dumping margin, and that number becomes the duty rate.
Both halves of the test have to hold. A big margin means nothing if the Commission finds no material injury, and clear injury alone won’t produce a duty without proof of below-fair-value pricing. The Commission looks at declining sales, lost market share, and falling profits attributable to the dumped imports, not just a domestic industry that happens to be struggling.
Not every price gap counts. In an original investigation, Commerce treats a dumping margin under 2 percent as de minimis and imposes no duty. In later administrative reviews of an existing order, the threshold drops to 0.5 percent, so a producer that keeps its margin under that number in a review period gets a zero cash deposit rate going forward.3eCFR. 19 CFR 351.106 – De Minimis Net Countervailable Subsidies and Weighted-Average Dumping Margins
What a Countervailing Duty Targets
Countervailing duties address a different problem: foreign government subsidies that give exporters an artificial cost advantage. Under 19 U.S.C. § 1671, if Commerce finds a countervailable subsidy on exported merchandise and the Commission finds injury, a duty equal to the net subsidy amount is added on top of the normal tariff.4Office of the Law Revision Counsel. 19 USC 1671 – Countervailing Duties Imposed
The statute reads “financial contribution” broadly. It covers direct transfers of money such as grants, loans, and equity infusions; revenue the government forgoes, like tax credits or deductions; providing goods or services below adequate remuneration; and government purchases at inflated prices.5Office of the Law Revision Counsel. 19 USC 1677 – Definitions and Special Rules A loan guarantee that lets a manufacturer borrow at below-market rates is treated the same as cash in hand.
A subsidy is only countervailable if it is “specific” to a particular industry or group of enterprises. Export and import substitution subsidies are automatically specific. For domestic subsidies, Commerce applies a two-part test. The subsidy is specific as a matter of law if the legislation expressly limits eligibility. Even a facially neutral program can be specific as a matter of fact if only a few enterprises receive the benefit, one industry is the predominant user, or the granting authority favors particular recipients.5Office of the Law Revision Counsel. 19 USC 1677 – Definitions and Special Rules A generally available tax rate cut doesn’t qualify. A subsidized electricity rate offered only to steel producers does.
Who Files a Petition and What It Has to Show
A domestic industry starts the process by filing a petition simultaneously with Commerce and the Commission. The petition has to include documented evidence of material injury, pricing comparisons showing dumping (or identification of subsidy programs), and enough import volume and value data to support the claims.6International Trade Administration. Guidelines for Petitions Requesting Relief Under U.S. Antidumping Law
Industry support is a hurdle in itself. The statute imposes two thresholds at once: producers supporting the petition must account for at least 25 percent of total domestic production, and they must represent more than 50 percent of the production of everyone who has taken a position for or against.7Office of the Law Revision Counsel. 19 USC 1673a – Procedures for Initiating an Antidumping Duty Investigation A single company producing 30 percent of domestic output clears the first bar, but if other producers actively oppose, the second bar can pull the petition down.
Petitions and everything that follows are filed electronically through ACCESS, Commerce’s centralized system for AD/CVD proceedings.8International Trade Administration. ACCESS – Antidumping and Countervailing Duty Centralized Electronic Service System
The Investigation Timeline
Once the petition is in, the clock starts. Commerce has 20 days to decide whether the petition contains enough evidence to open a formal investigation. If it does, the Commission has to make a preliminary injury determination within 45 days of the petition’s filing date. A negative finding here ends the case.9International Trade Administration. Statutory Time Frame for AD/CVD Investigations
If the Commission’s preliminary finding is affirmative, Commerce moves to its own preliminary determination on dumping margins or subsidy rates. In antidumping cases, that determination normally comes within 140 days of initiation, and Commerce can extend to 190 days in extraordinarily complicated cases.10Office of the Law Revision Counsel. 19 USC 1673b – Preliminary Determinations Commerce sends detailed questionnaires to foreign producers, and in countervailing duty cases to the foreign government as well. Those responses become the factual record.
An affirmative preliminary determination by Commerce has an immediate financial consequence at the border. CBP starts suspending liquidation on new entries of the subject merchandise and collecting cash deposits at the estimated duty rate.11U.S. Customs and Border Protection. Antidumping and Countervailing Duties Frequently Asked Questions Importers feel the impact months before any final decision issues.
Commerce’s final determination follows within 75 days of its preliminary determination and can be extended to 135 days in some situations.12Office of the Law Revision Counsel. 19 USC 1673d – Final Determinations The Commission then issues its final injury determination. An antidumping or countervailing duty order only publishes when both agencies reach affirmative final conclusions.
How Duty Rates Are Calculated and Collected
The rate applied to a specific product equals the dumping margin or net subsidy rate Commerce calculates. A 15 percent dumping margin adds 15 percent on top of whatever normal tariff already applies. CBP handles the collection, requiring importers to post cash deposits at the estimated rate when goods enter.11U.S. Customs and Border Protection. Antidumping and Countervailing Duties Frequently Asked Questions
The United States runs a retrospective assessment system, which is unusual internationally. The cash deposit posted at entry is only an estimate. The actual duty owed is determined later, in an administrative review that looks at the foreign producer’s actual pricing during the entry period. If the finally assessed duty is lower than the deposit, the importer gets a refund with interest. If it’s higher, the importer owes the difference. Real cost on a shipment often isn’t known for years after the goods arrive.
When CBP has a reasonable belief that a standard continuous bond won’t cover the potential duty liability, it can require a Single Transaction Bond as additional security. The bond amount is generally the merchandise value multiplied by the applicable duty rate, and if the importer-specific rate isn’t known, CBP uses the highest rate for that commodity.13U.S. Customs and Border Protection. Use of Single Transaction Bonds as Additional Security for Antidumping and Countervailing Concerns
Non-Market Economy Calculations
The standard dumping calculation compares U.S. prices against home-market prices, but that approach doesn’t work when the exporting country is classified as a non-market economy. If the government controls prices, wages, and input costs, those numbers don’t reflect real market conditions. Commerce currently designates 14 countries as non-market economies, including China, Vietnam, and Russia.14International Trade Administration. NME Countries List and Surrogate Country List Memos
For merchandise from these countries, Commerce constructs a “normal value” by identifying the producer’s factors of production (raw materials, labor, energy, overhead) and then valuing those factors using prices from a surrogate market economy country at a comparable level of economic development.15eCFR. 19 CFR 351.408 – Calculation of Normal Value of Merchandise From Nonmarket Economy Countries Commerce publishes an annual list of economically comparable countries and prioritizes those that are significant producers of similar merchandise. The choice of surrogate can swing duty margins by tens of percentage points.
How Rates Change After the Order Issues
An AD/CVD order doesn’t freeze duty rates permanently. Every year, during the anniversary month of the order, any interested party can request that Commerce conduct an administrative review of specific exporters or producers.16eCFR. 19 CFR 351.213 – Administrative Review of Orders and Suspension Agreements Under Section 751(a)(1) of the Act The review recalculates the dumping margin or subsidy rate using the most recent trade data. The result resets the cash deposit rate going forward and determines the final duty assessment for entries made during the review period.
The cycle is ongoing. A foreign producer that raises U.S. prices or reduces the subsidy benefit can see its rate drop, sometimes to zero. One that increases dumping faces a higher rate. Financial exposure on any specific shipment isn’t fully resolved until the review covering that entry period is complete, which routinely takes more than a year after the period ends.
Scope Rulings for Borderline Products
A common practical question is whether a particular product actually falls within an existing order. When that’s unclear, any interested party can file a scope ruling application with Commerce. The application has to include a detailed description of the product’s physical characteristics, country of origin, tariff classification, and production process, along with entry summaries and invoices when the product has already been imported.17eCFR. 19 CFR 351.225 – Scope Rulings
Commerce has 30 days after filing to decide whether to accept the application and open an inquiry. If Commerce doesn’t act within 31 days, the application is automatically deemed accepted. From there, a final scope ruling has to issue within 120 days, extendable by up to 180 additional days for good cause.17eCFR. 19 CFR 351.225 – Scope Rulings A ruling that the product is outside the order can be the difference between a viable import program and one that isn’t.
Sunset Reviews and Order Expiration
Every AD/CVD order carries a built-in expiration mechanism. Five years after publication, Commerce and the Commission must conduct a “sunset review” to determine whether revoking the order would likely lead to the continuation or recurrence of dumping (or subsidization) and material injury.18Office of the Law Revision Counsel. 19 USC 1675 – Administrative Review of Determinations Commerce publishes a notice of initiation at least 30 days before the five-year anniversary and invites interested parties to participate.19eCFR. 19 CFR 351.218 – Sunset Reviews Under Section 751(c) of the Act
If no interested party responds, Commerce issues a final determination revoking the order within 90 days. If parties do participate, the Commission evaluates the likely volume, price effects, and economic impact of subject imports if the order came off. Orders that survive stay in effect another five years, and the cycle repeats. Some have been renewed through multiple sunset reviews and have remained in place for decades.
Consequences for Trying to Evade the Duty
Some importers try to avoid AD/CVD by misrepresenting country of origin, undervaluing merchandise, or transshipping through a third country. The Enforce and Protect Act gives CBP a formal framework to investigate. When CBP receives an allegation, it has 15 business days to decide whether to open an investigation, and it must reach a final determination within 300 calendar days of initiation, with a possible 60-day extension for extraordinarily complicated cases.20eCFR. 19 CFR Part 165 – Investigation of Claims of Evasion of Antidumping and Countervailing Duties If CBP develops a reasonable suspicion within 90 days, it can impose interim measures: suspending liquidation, extending liquidation deadlines, and requiring single transaction bonds or additional cash deposits.
Separately, importers who make false statements on customs entries face civil penalties under 19 U.S.C. § 1592 that scale with culpability. Fraud can draw a penalty up to the full domestic value of the merchandise. Gross negligence draws the lesser of the domestic value or four times the duty loss. Simple negligence draws the lesser of the domestic value or two times the duty loss. A prior disclosure, made before a formal investigation begins, cuts these sharply: fraud drops to 100 percent of the unpaid duties, and gross negligence or negligence collapses to interest on the unpaid duties.21Office of the Law Revision Counsel. 19 USC 1592 – Penalties for Fraud, Gross Negligence, and Negligence Willful evasion can also trigger criminal prosecution.
Challenging a Determination
A party that disagrees with a final AD/CVD determination can seek judicial review at the U.S. Court of International Trade, a specialized federal court with exclusive jurisdiction over most trade remedy disputes. Importers can also file administrative protests with CBP over how duties were applied to specific entries, or request scope rulings from Commerce before pursuing litigation. The Court of International Trade decides on the administrative record, so no new evidence is introduced at trial. Appeals go to the U.S. Court of Appeals for the Federal Circuit.