Antidumping (AD) and countervailing duties (CVD) are trade remedy duties collected by CBP under the authority of the Tariff Act of 1930, Title VII (19 USC §1671 et seq. for CVD; 19 USC §1673 et seq. for AD). AD duties target foreign goods sold in the U.S. below fair value. CVD duties target goods that received foreign government subsidies. Both programs run through a two-agency investigative model, operate independently of Section 301 and Section 232 tariffs, and can produce duty rates that dwarf standard tariff levels. For importers, an unexpected AD/CVD order can add 50% to 500% to the cost of a product line overnight.
The International Trade Administration (ITA) within the U.S. Department of Commerce (DOC) calculates dumping margins and subsidy rates. The U.S. International Trade Commission (USITC) determines whether the domestic industry suffered material injury from the imports. Both agencies must reach affirmative decisions for an AD/CVD order to be issued. CBP collects the resulting cash deposits at each entry through the ACE portal.
What Are Antidumping and Countervailing Duties
AD and CVD are distinct legal mechanisms that target different types of unfair trade practices. Understanding the difference is necessary before importing goods from any country subject to active orders.
How AD Differs from CVD
AD duties address private-sector pricing behavior: a foreign manufacturer selling in the U.S. at a price below its home market price or cost of production. The ITA calculates the dumping margin as the difference between fair value and the U.S. sale price. If the margin is 40%, the AD duty rate is 40%.
CVD duties address government behavior: subsidies paid to foreign producers that give them an unfair cost advantage. The ITA calculates the subsidy rate as the value of subsidies received per unit of production. Both AD and CVD can apply to the same product simultaneously. For example, Chinese solar panels face both AD and CVD orders. Products like lumber, solar cells, and steel pipe are among the most heavily covered categories. The rates are additive. A tariff consulting firm review of your HTS codes against the ITA AD/CVD order database identifies whether your products are subject to existing orders before you place the first purchase order.
How an AD/CVD Investigation Works
The process begins when a domestic industry files a petition with both ITA and USITC simultaneously. The USITC makes a preliminary injury determination within 45 days. If affirmative, ITA conducts its investigation. The total timeline from petition to final order is typically 280-315 days for AD cases and 205-275 days for CVD cases under the standard track.
ITA Dumping Margin Calculation
ITA selects mandatory respondents (typically the two largest foreign producers by volume) for full investigation. ITA compares each respondent’s U.S. sale prices to their home market prices or constructed value (cost of production plus profit). The difference is the dumping margin. Other foreign producers receive an all-others rate based on the respondent rates. Companies not selected as mandatory respondents can request review in subsequent annual reviews.
USITC Material Injury Determination
USITC analyzes whether the U.S. domestic industry suffered material injury or is threatened with material injury by reason of the subject imports. Factors include price suppression, lost market share, reduced employment, and declining financial performance. The USITC investigation manual lays out the full evidentiary framework. A negative USITC determination ends the case even if ITA found dumping. Both agencies must reach affirmative final determinations for an order to issue.
Cash Deposit Rates and Liquidation
Once an AD/CVD order issues, importers must deposit estimated duties at the time of entry. The cash deposit rate is the rate from the most recent ITA determination for the specific producer/exporter. CBP holds the deposit. The actual duty rate is not finalized until ITA conducts an administrative review of entries made during a specific period. If the final rate exceeds the deposit rate, CBP bills the importer for the difference. If the final rate is lower, CBP refunds the overpayment. This retroactive true-up makes AD/CVD exposure unpredictable in ways that Section 301 and Section 232 are not. Build reserves for retroactive assessments into your landed cost model.
Scope Rulings (Is My Product Covered?)
An AD/CVD order covers products described in the order scope language, not just specific HTS codes. A product that falls within the scope description owes AD/CVD duties even if its HTS code is not listed. A product that falls outside the scope owes no AD/CVD duties even if its HTS code is listed. ITA issues scope rulings on request. Submit a scope ruling request to ITA with a detailed product description, technical specifications, and proposed classification. ITA issues a ruling within 45 days (standard) or 3 days (critical circumstances). A favorable scope ruling protects against duty assessment at entry and is binding on CBP. The trade advisory services team prepares scope ruling submissions and manages the ITA response process.
Administrative Reviews and Sunset Reviews
An administrative review is an annual process through which ITA recalculates dumping margins or subsidy rates for entries made during the review period. Any interested party can request a review during the anniversary month of the order. New rates from the administrative review apply retroactively to all entries in the review period. This is the mechanism that can produce large retroactive duty bills years after the original entries were filed.
A sunset review occurs every five years. ITA and USITC each conduct their own analysis to determine whether revoking the order would likely lead to continuation or recurrence of dumping and material injury. If both agencies reach affirmative determinations, the order continues for another five years. If either reaches a negative determination, the order is revoked and AD/CVD duties stop. Monitor sunset review timelines for orders covering your products. Revocation can significantly reduce your landed costs on affected product lines.
AD/CVD Circumvention Enforcement
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CBP and ITA actively investigate transshipment: the practice of routing Chinese or other subject-country goods through a third country to avoid AD/CVD orders. Goods that undergo only minor processing in a third country (cutting to size, repackaging, labeling) do not acquire that country’s origin for AD/CVD purposes. CBP uses targeting algorithms, country-of-origin audits, and referrals from domestic industry to identify circumvention. Importers sourcing from Vietnam, Malaysia, Thailand, or Mexico for product categories subject to China AD/CVD orders must verify that the goods underwent substantial transformation in the third country and document it thoroughly. The Section 301 tariffs on China article covers the related transshipment risk in the Section 301 context. Both enforcement programs operate in parallel.
How Importers Manage AD/CVD Risk
Three practical measures reduce AD/CVD exposure without exiting the source market. Each addresses a different phase of the import lifecycle.
Supplier Vetting
Before sourcing from a new supplier in a subject country, check the ITA AD/CVD order database by HTS code and country. Identify whether the specific producer has a company-specific rate or falls under the all-others rate. Producers with high company-specific rates represent higher landed cost risk than those with low rates or no rate at all.
Continuous Bond Sizing
CBP requires importers with AD/CVD exposure to maintain enhanced continuous bonds. The standard bond formula may not cover potential retroactive assessments from administrative reviews. Size the continuous bond to cover the estimated maximum AD/CVD exposure across all open review periods. The customs brokerage services team advises on correct bond sizing for AD/CVD-exposed product portfolios.
Reserves for Retroactive Assessments
Book a reserve on the balance sheet for potential AD/CVD true-up payments from pending administrative reviews. The reserve should reflect the difference between the deposited rate and the maximum estimated final rate, multiplied by the volume of entries in open review periods. This is standard accounting practice for importers with material AD/CVD exposure.
Frequently Asked Questions
What is the difference between antidumping and countervailing duties?
Antidumping duties target foreign goods sold in the U.S. below fair value. Countervailing duties target goods that received government subsidies. Both are calculated by ITA and collected by CBP. Both can apply to the same product simultaneously, and the rates are additive.
How long does an AD/CVD investigation take?
Approximately 280-315 days for AD cases and 205-275 days for CVD cases from petition filing to final order. Critical circumstances requests can produce preliminary orders faster. Annual administrative reviews and five-year sunset reviews continue after the order issues.
What is a cash deposit rate?
The cash deposit rate is the estimated AD/CVD duty rate deposited with CBP at entry. It is based on the most recent ITA determination for the specific producer or exporter. The actual rate is finalized in the administrative review and may differ from the deposit rate, creating a refund or additional bill.
What is a scope ruling?
A scope ruling is an ITA determination of whether a specific product falls within the scope of an existing AD/CVD order. A favorable ruling protects an importer from duty assessment on that product. Scope rulings are binding on CBP and are the primary tool for resolving classification ambiguity under AD/CVD orders.
Can AD/CVD duties be retroactive?
Yes. Administrative review rates apply retroactively to all entries made during the review period. If the final rate is higher than the deposit rate, CBP bills the importer for the difference on entries that may be two or more years old. This retroactive exposure is the most significant risk in AD/CVD compliance.
How are AD/CVD duties enforced against transshipment?
CBP and ITA use targeting systems, country-of-origin audits, and domestic industry tips to identify transshipment. Goods that undergo only minor processing in a third country retain their original country of origin for AD/CVD purposes. Importers must document substantial transformation in the transit country to establish a new origin.
Do AD/CVD duties stack with Section 301 tariffs?
Yes. AD/CVD duties, Section 301 duties, Section 232 duties, and Reciprocal Tariff Act rates are all additive. An importer of Chinese steel pipe subject to an AD order could face a combined rate exceeding 200% when all programs apply simultaneously.
AD/CVD exposure can swing your landed cost by triple digits without warning. The trade advisory services team maps your HTS code portfolio against active AD/CVD orders, identifies scope ruling opportunities, and advises on bond sizing. The customs brokerage services team manages entry filing, protest filing on incorrect assessments, and administrative review participation to protect your rate position.
