What Is Dumping? Trade Pricing, Anti-Dumping Duties, and Reviews

Dumping in trade is when a foreign manufacturer sells a product in the United States for less than it charges for the same product at home. When that price gap causes real harm to an American industry, the federal government can add a special tariff, called an anti-dumping duty, to make up the difference.¹ Two federal agencies handle the work. The Department of Commerce measures how much the price was undercut, and the International Trade Commission decides whether the cheap imports actually hurt domestic producers.²

How the Price Gap Is Measured

The whole analysis comes down to one comparison. The price a foreign company charges in its own country is called the normal value. The price it charges to sell the same goods into the U.S. is the export price. If normal value is higher than export price, the difference, expressed as a percentage, is the dumping margin.¹

Working out the export price takes some adjustment. Commerce starts with the first sale to an unrelated U.S. buyer, then strips out shipping, U.S. import duties, and other costs that got added on the way from the foreign factory to the American purchaser. When the foreign producer sells through a related U.S. company rather than to an independent buyer, Commerce uses a constructed export price and removes further selling expenses like commissions and warranties to approximate the factory-gate price.³

When Home-Market Prices Don’t Work

Normal value usually comes from what the manufacturer charges for the same product in its home country, sold in ordinary quantities through regular channels.⁴ That benchmark is not always available, and the law provides fallback methods.

If home-market sales are too small to be meaningful (generally under five percent of the volume shipped to the U.S.) or if home-market conditions make a fair comparison impossible, Commerce can look at what the company charges for the same product in a third country, so long as that market is representative and its volume also clears the five-percent threshold.⁴

If no usable price exists in any market, Commerce builds normal value from the ground up. This constructed value equals the cost of materials and manufacturing plus the company’s actual selling expenses, administrative expenses, and profit on comparable merchandise sold at home, with U.S. packing costs added on top.⁴

A separate approach applies when the exporting country is a non-market economy, meaning the government controls prices rather than leaving them to supply and demand. Commerce ignores domestic prices entirely and instead values the inputs that went into the product (labor hours, raw materials, energy, capital) using data from a comparable market-economy country. This surrogate-country method has come up often in cases involving Chinese manufacturers, where Commerce has concluded that government intervention makes domestic prices unreliable.⁴

Low Prices Aren’t Enough on Their Own

Finding that a foreign company sells below normal value is only half the case. No anti-dumping duties can be imposed unless those dumped imports also cause material injury to a domestic industry. The statute defines material injury as harm that is not inconsequential, immaterial, or unimportant.⁵ The ITC does not need to find an industry on the verge of collapse. It only needs to find real, meaningful damage.

The Commission weighs concrete indicators. A sharp jump in the volume of dumped imports relative to domestic production. Evidence that low-priced imports are depressing or suppressing U.S. prices. Financial records showing lost sales, falling profits, shrinking market share, reduced capacity utilization, and layoffs. Even when the damage has not fully arrived, the ITC can find a threat of material injury if conditions strongly point that way.¹

One hard cutoff can end an investigation early no matter what the pricing looks like. If imports from the country under investigation account for less than three percent of total U.S. imports of that product over the prior twelve months, they are considered negligible and the case must be terminated. When several countries are investigated together on petitions filed the same day, imports below three percent from individual countries are not dismissed if their combined volume exceeds seven percent.⁶

How a Case Starts and Moves

Most anti-dumping investigations begin with a petition filed by a domestic industry with Commerce and the ITC on the same day. The petition alleges that a foreign product is being sold in the U.S. below fair value and that the imports are injuring the domestic industry. Petitioners have to be interested parties: domestic manufacturers, producers, unions, or trade associations, backed by enough of the domestic industry to show the petition reflects a broader concern. Commerce can also start an investigation on its own, though that is rare.⁷

From there, Commerce and the ITC run parallel tracks with preliminary and final determinations. Commerce first issues a preliminary determination on whether dumping is occurring and estimates a margin. An affirmative preliminary finding suspends liquidation on the imports, meaning importers must begin posting cash deposits equal to the estimated dumping margin on every new shipment.⁸ Commerce then issues a final dumping determination, and the ITC issues its own final injury determination on a coordinated schedule.⁹ If either agency reaches a negative final decision, the case ends and no duties are imposed.

What the Duty Looks Like

When both agencies finish with affirmative decisions, Commerce publishes an anti-dumping duty order within seven days of being notified of the ITC’s determination. The order tells U.S. Customs and Border Protection to assess a duty equal to the amount by which normal value exceeds export price.¹⁰ If a product’s normal value is $150 and its export price is $100, the duty is $50 per unit. Rates can run anywhere from a few percent to well over 100 percent of the export price.

Importers do not wait until the final calculation to pay. They deposit estimated anti-dumping duties at the time of importation, alongside regular customs duties, and CBP collects these deposits on every covered shipment.¹¹ The final assessment comes later once Commerce has enough transaction data to pin the margin down. If the actual duty is higher than the deposit, the importer owes the difference. If it is lower, the importer gets a refund.

The deposit requirement normally begins after Commerce’s affirmative preliminary determination is published. When a petitioner alleges critical circumstances, duties can reach back 90 days before that date.⁸ Critical circumstances exist when importers appear to be stockpiling large volumes in anticipation of duties, trying to flood the market before the tariff wall goes up.¹²

How Long a Duty Lasts

An anti-dumping duty order does not sit at its original rate forever. At least once every twelve months, Commerce will review and update the rate for each covered company if an interested party asks. If the foreign company has raised its U.S. prices toward fair levels, its rate drops. If its pricing has gotten worse, the rate rises.¹³

Every five years, Commerce and the ITC together conduct a sunset review of each outstanding order. The question is whether revoking the order would likely lead to a return of dumping and material injury. If both agencies say yes, the order continues for another five years. If either says no, the order is revoked.¹³ Some orders have survived several sunset reviews and stayed on the books for decades, especially in industries like steel where dumping problems tend to recur.

When Companies Try to Route Around the Duty

Foreign companies have strong incentives to work around anti-dumping duties, and the law anticipates the common moves. One is to ship components to the U.S. and assemble them here, then argue that the finished product is not the item covered by the order. Commerce can shut that down if it finds the U.S. assembly is minor or insignificant, weighing the level of investment, the nature of the production process, and how much value the U.S. work actually adds.¹⁴

A parallel dodge routes goods through a third country. A manufacturer subject to a duty order on exports from Country A ships components to Country B, does minimal assembly there, and exports the “Country B” product to the U.S. Commerce can extend the original order to cover these goods when the third-country assembly is minor and the components from the original country make up a significant share of the final product’s value.¹⁴ When Commerce finds circumvention, it does not create a new order. It stretches the existing one to catch the products used to evade it.

Dumping Is Not the Same as Subsidies

Dumping and subsidized imports are related but distinct, and they trigger different duties. Anti-dumping duties address private company pricing: a foreign manufacturer choosing to sell below its home market price. Countervailing duties address government behavior: a foreign government giving its manufacturers tax breaks, cheap loans, or direct payments that let them undercut American competitors.¹⁵

The math differs too. Anti-dumping duties are company-specific, calibrated to each exporter’s individual pricing gap. Countervailing duties are country-specific and set to offset the value of the government subsidy.¹⁵ A single product can face both at the same time when the foreign company is both pricing below fair value and receiving government support. In some high-profile cases involving Chinese goods, combined duty rates have reached several hundred percent.

1
Office of the Law Revision Counsel. 19 US Code 1673 – Antidumping Duties Imposed
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United States International Trade Commission. Understanding Antidumping and Countervailing Duty Investigations
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Office of the Law Revision Counsel. 19 USC 1677a – Export Price and Constructed Export Price
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Office of the Law Revision Counsel. 19 USC 1677b – Normal Value
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Office of the Law Revision Counsel. 19 US Code 1677 – Definitions and Special Rules
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Office of the Law Revision Counsel. 19 USC 1677 – Definitions and Special Rules
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Office of the Law Revision Counsel. 19 USC 1673a – Procedures for Initiating an Antidumping Duty Investigation
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Office of the Law Revision Counsel. 19 USC 1673b – Preliminary Determinations
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Office of the Law Revision Counsel. 19 USC 1673d – Final Determinations
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Office of the Law Revision Counsel. 19 USC 1673e – Assessment of Duty
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U.S. Customs and Border Protection. Priority Trade Issue – Antidumping and Countervailing Duties
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International Trade Administration. FAQs for the Initiation of an Antidumping Duty and/or Countervailing Duty Investigation
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Office of the Law Revision Counsel. 19 USC 1675 – Administrative Review of Determinations
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Office of the Law Revision Counsel. 19 US Code 1677j – Prevention of Circumvention of Antidumping and Countervailing Duty Orders
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U.S. Customs and Border Protection. What Is the Difference Between Anti-Dumping (AD) and Countervailing (CVD)