Most importers know about standard US import tariffs — the rates you find in the Harmonized Tariff Schedule. What catches people off guard is an entirely separate layer of duties that can arrive on top of those rates: anti-dumping duties (ADD) and countervailing duties (CVD). For certain China-origin goods, these can be substantial — sometimes adding 50%, 100%, or even 200%+ to your landed cost. Finding out about them after your shipment is already at the port is an expensive lesson.
Why Do These Duties Exist?
The two mechanisms are legally distinct but often imposed together:
Anti-dumping duties are imposed when a foreign manufacturer sells goods in the US at prices below their home-market value or below cost of production. The US International Trade Commission (ITC) determines whether the dumping has injured US domestic industry; the US Department of Commerce (DOC) calculates the dumping margin, which becomes the duty rate.
Countervailing duties address government subsidies. If a foreign government provides financial support — below-market loans, grants, preferential land use, direct cash payments — that artificially lowers production costs, US producers can petition for CVD relief. Again, ITC assesses injury and DOC calculates the subsidy rate.
Neither of these requires any wrongdoing on your part as an importer. You may be buying from a legitimate supplier at a fair market price, but if an AD/CVD order covers that product category, you pay the duty regardless.
Which China Products Are Most Commonly Affected?
The US has hundreds of active anti-dumping and countervailing duty orders. China is the most frequent subject. Product categories with significant ADD/CVD exposure include:
- Steel and aluminum products (sheet, plate, pipe, tube, wire rod)
- Solar panels and cells
- Tires (passenger, truck, off-road)
- Paper and paperboard products
- Chemical products (citric acid, glycine, sodium hexametaphosphate)
- Furniture (wooden bedroom furniture has had an order in place since 2005)
- Ceramic tile and flooring
- Seafood (certain shrimp, crawfish)
- Tools (hand trucks, steel nails)
- Lithium-ion batteries (ongoing investigations)
This list is not exhaustive — there are over 150 active orders on China-origin goods. The fact that a product is not on any list you have seen does not mean it is not covered.
How to Check Whether Your Product Is Subject to ADD/CVD
The definitive source is the US International Trade Administration (ITA) ADD/CVD database, accessible at enforcement.trade.gov. You can search by country of origin, product name, or case number.
The practical lookup process:
1. Start with your HS code (10-digit for US imports). If you do not have it, see our post on HS codes and import duties for China goods.
2. Search the ITA database for active orders under that HS code with China as the country of origin.
3. If an order exists, check the deposit rate for the specific exporter/manufacturer you are buying from. Rates are company-specific — two factories making the same product can have different ADD rates depending on whether they participated in the original investigation.
4. If your specific supplier does not appear in the order, an "all others" rate applies, which is often higher than the rates for individual respondents.
Your customs broker should also confirm ADD/CVD applicability during the import classification process — this is a standard step, not an optional one.
How Are ADD/CVD Rates Applied?
Unlike standard tariffs, which are set at entry, ADD/CVD rates are sometimes applied as estimated deposits with final rates determined later through an administrative review process. This means:
- You pay a deposit rate at the time of entry based on the most recently published rate for that exporter
- CBP conducts annual administrative reviews, and the final rate may be higher or lower than the deposit
- If the final rate is higher, you owe the difference plus interest. If lower, you get a refund.
This retroactive true-up is one reason ADD/CVD goods are higher-risk from a cash flow perspective. A shipment that looked manageable at deposit time can generate an unexpected bill 18–24 months later.
Section 301 Tariffs Are Separate
Do not confuse ADD/CVD with Section 301 tariffs (the "China tariffs" implemented under the Trump and Biden administrations). Section 301 tariffs add 7.5% to 25% on a broad range of Chinese goods — and these stack on top of both standard duties AND any ADD/CVD that applies. Some product categories carry all three: standard tariff + Section 301 + ADD/CVD. Running a complete landed cost calculation before importing is essential.
Our freight estimator can help model landed costs including applicable tariffs — though for ADD/CVD specifically, you will want to confirm current rates with your customs broker since they change through the administrative review cycle.
What If You Believe Your Goods Are Misclassified?
Some importers attempt to classify goods under HS codes not covered by an ADD/CVD order, or source components from third countries where final assembly occurs. CBP scrutinizes both approaches closely. Deliberate misclassification or circumvention through third-country processing to evade ADD/CVD orders can result in significant penalties, loss of import privileges, and criminal liability in egregious cases. The better path is accurate classification from the start.
Before Your Next Shipment
A pre-import ADD/CVD check takes 15–20 minutes and can save thousands. Make it a standard step in your supplier evaluation process — before you place the order, not after it ships.
If you want to vet your supply chain more broadly, our post on how to vet a China supplier and forwarder covers the full diligence process. And for routing and freight cost estimates, visit ChinaLogisticHub freight booking to see carrier options across sea, air, and rail.