Anti-dumping duty
Anti-dumping duty is an extra import charge on goods sold below fair value, added on top of normal duty to protect domestic producers.
Last reviewed 16 July 2026.
Anti-dumping duty (ADD) is an additional import charge applied when goods are exported at a price below their normal value in the exporting country — 'dumping' — and this harms domestic producers. It is levied on top of any standard customs duty, not instead of it.
In the UK, anti-dumping investigations and measures are handled by the Trade Remedies Authority. Where a measure is in force, it targets specific products from specific countries, and the rate can be substantial — sometimes tens of percent — often with different rates for different named exporters.
Anti-dumping duty is one of the most common causes of a nasty landed-cost surprise, because the headline MFN rate on a commodity code gives no hint that an extra measure applies. Ceramic tableware and certain steel and bicycle products from particular origins are classic examples.
How it affects your landed cost
Anti-dumping duty can dwarf the standard duty rate and blow a hole in a margin that looked healthy on the MFN figure alone. Because it depends on both the product and the exporter, you have to check for it specifically before you commit to an order. Feeding the real, all-in duty into our calculator — standard plus any anti-dumping rate — keeps your landed cost honest.
Calculate your landed costAnti-dumping duty — FAQ
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