# Supplier declaration for a third country

*Last updated: 2026-06-18*

> To claim preferential tariff treatment under an EU trade agreement with a third country, the supplier issues a supplier declaration for a third country, confirming that the goods meet the applicable rules of origin.

To claim preferential tariff treatment under an EU trade agreement with a third country, the supplier issues a supplier declaration for a third country, confirming that the goods meet the applicable rules of origin. The exporter or buyer relies on this document to substantiate the preferential claim before customs authorities. Unlike the standard supplier declaration covering EU-originating goods, this variant applies where goods originate outside the EU but may still qualify under cumulation provisions. Missing or incomplete declarations expose the exporter to rejection of the preference and leave the importer liable for full non-preferential duties.

**Source:** [https://ec.europa.eu/taxation_customs/business/customs-procedures/origin](https://ec.europa.eu/taxation_customs/business/customs-procedures/origin)

## Quick Facts

| Property | Value |
|---|---|
| Term | Supplier declaration for a third country |
| Language | EN |
| Word count | 95 |
| Last updated | 2026-06-18 |
| Source | https://ec.europa.eu/taxation_customs/business/customs-procedures/origin |

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