Anti-dumping duty is an additional import duty imposed after an investigation finds that specified goods were exported below a determined normal value and caused or threatened material injury to a domestic industry. It is product-, origin- and exporter-specific and is separate from ordinary customs duty.
When can anti-dumping duty apply?
Authorities define the covered merchandise through tariff classifications and a written product scope. The country of origin, producer or exporter and applicable review period can affect the rate. Classification alone may not resolve whether a product falls within an order.
How is the amount calculated?
The assessment method depends on the jurisdiction and order. For a simple illustrative transaction in which an applicable ad valorem rate is 18% and the relevant customs value is $50,000, the estimated anti-dumping duty is $50,000 × 18% = $9,000. This does not include ordinary duty, taxes, fees or other trade remedies.
What should an importer verify?
- Exact product description and technical characteristics
- Country of origin, producer and exporter
- Tariff classification and scope language
- Applicable cash-deposit or assessment rate
- Entry date and current administrative instructions
- Whether countervailing duty also applies
Why can the final liability differ?
A cash deposit at entry may not be the final assessed duty. Reviews, scope rulings and corrected origin or exporter data can change the outcome. Importers should obtain jurisdiction-specific customs advice and preserve supporting records.
