Country of Origin Declaration

Country of origin is the single most consequential declaration in international trade. Under non-preferential origin rules, it determines which duty rate applies under the importing country's general tariff schedule — the difference between the MFN (Most Favoured Nation) rate and a preferential rate under a free trade agreement can be the difference between a viable product margin and an uncompetitive landed cost. Under preferential origin rules, a correctly documented claim can reduce a tariff of 10-30% to zero; an incorrectly made claim can trigger back-duty assessments retrospectively covering three years of imports, plus interest and penalties.

Origin determination methodology varies by jurisdiction. The EU applies the Union Customs Code (UCC) non-preferential rules based on 'last substantial processing' and, for preferential origin under its FTAs, product-specific rules (PSRs) requiring either a change of tariff classification, a minimum value-added percentage, or a specific manufacturing operation. The US applies a 'substantial transformation' test under CBP regulations that is more judgment-based and less rule-of-law than the EU approach. The UK, post-Brexit, has its own Global Tariff and TCA-specific rules for EU-origin claims. Navigating these parallel systems for a product manufactured with inputs from multiple countries requires a structured, documented methodology rather than an informal judgment.

Beyond tariffs, origin documentation has taken on new importance in the context of forced labour legislation. The US UFLPA presumes that goods with any content originating from Xinjiang, China are made with forced labour and blocks them at US customs unless the importer can rebut that presumption with supply chain evidence. The EU's CS3D regulation creates due diligence obligations that include origin traceability. An accurate, documented CoO determination — with the underlying Bill of Materials and supplier origin declarations — provides the evidentiary foundation for these forced labour compliance requirements. Sustalium's origin module maintains the BoM-level evidence alongside the CoO certificate, so the same data supports both customs declarations and forced labour due diligence simultaneously.