Anti-Dumping Duties: When They Apply and How to Check

What Are Anti-Dumping Duties?

Anti-dumping duties are additional charges imposed on imported goods when a foreign manufacturer sells those goods at below their normal market value — a practice known as “dumping.” The purpose of these duties is to protect domestic producers from unfair price competition. In the UK, the Trade Remedies Authority (TRA) investigates dumping cases and recommends measures to the Secretary of State, as outlined on GOV.UK’s TRA page.

Post-Brexit, the UK maintains its own independent anti-dumping regime, separate from the EU’s. This means duties that applied under EU law do not automatically carry over — the TRA conducts its own reviews and may reach different conclusions. For importers, this creates a need to check both UK and, where relevant, EU anti-dumping measures carefully.

When Do Anti-Dumping Duties Apply?

Anti-dumping duties apply when all three conditions are met:

1. Dumping is proven: The TRA establishes that goods are being exported to the UK at prices below their normal value in the exporting country.
2. Material injury exists: UK domestic industry producing like goods suffers measurable harm — such as lost market share, declining profits, or factory closures.
3. A causal link is established: The injury is directly caused by the dumped imports, not by other market factors.

Investigations typically take 12–18 months. During this period, provisional duties may be applied. Once confirmed, definitive anti-dumping duties can remain in place for up to five years, subject to review.

Products Commonly Affected

In the UK market, anti-dumping duties frequently target steel products, aluminium, ceramics, certain chemicals, and solar panels. However, the range can be surprising — duties have been applied to products as diverse as bicycles, ironing boards, and biodiesel. A knowledgeable customs broker can flag potential exposures before you commit to a purchase.

How to Check If Your Goods Are Subject to Anti-Dumping Duties

Step 1: Identify the Correct Commodity Code

Every product imported into the UK is classified under a 10-digit commodity code. You can look up codes using the UK Global Tariff tool on GOV.UK. Getting the code right is critical — anti-dumping duties are tied to specific codes and often to specific countries of origin.

Step 2: Check the UK Trade Tariff for Additional Duties

Once you have the commodity code, search it on the UK Trade Tariff service. Any active anti-dumping duties will appear under the “Import” tab alongside the standard duty rate. Pay attention to the country of origin — duties may apply to goods from China but not from Vietnam, for example.

Step 3: Review TRA Notices

The Trade Remedies Authority publishes all active measures, ongoing investigations, and review decisions. Bookmark their case register for regular checks, especially if you import goods in sectors prone to trade remedy action.

How Anti-Dumping Duty Rates Are Calculated

Duty rates are typically expressed as either:

• A percentage of the customs value (ad valorem) — for example, 22.5% on certain steel products from a specific country.
• A fixed amount per unit (specific duty) — for example, £X per tonne.
• A minimum import price — if the declared price falls below a threshold, the difference becomes the duty.

Individual exporters who cooperate with TRA investigations may receive a lower, company-specific rate. Non-cooperating exporters typically face the highest residual rate.

What Happens If You Don’t Pay?

Failing to account for anti-dumping duties on your customs declaration is a serious compliance issue. HMRC can issue retrospective duty demands, apply interest charges, and in severe cases, consider it an offence under customs law. If you’re unsure whether your goods attract these duties, get professional advice before importing — submitting a clearance request to specialists can save you from costly surprises.

Exemptions and Reviews

In some cases, importers can apply for exemptions — for example, if they can demonstrate that the goods undergo further processing in the UK (end-use relief) or if a specific exporter is excluded from the measure. The TRA also conducts interim and expiry reviews that may lead to duties being reduced or removed entirely.

Anti-dumping duties add complexity to your import costs, but they don’t have to catch you off guard. With proper classification, diligent checking, and the right customs support, you can factor these costs into your purchasing decisions from the start.