What is Certificate of Origin?
A certificate of origin (CO) is a document certifying the country in which goods were wholly obtained or last substantially transformed, as determined under the applicable rules of origin. Non-preferential certificates are used for purposes such as trade defence measures, embargoes, statistics or buyer and letter of credit requirements, and are typically issued by chambers of commerce under the ICC World Chambers Federation International Certificate of Origin Guidelines. Preferential proofs of origin entitle the importer to reduced or zero duty under a free trade agreement or preference scheme. Depending on the agreement they take the form of an issued certificate such as the EUR.1 or a self-certified origin statement made out by the exporter on the invoice. The EU's Registered Exporter system (REX) is one example of self-certification, under which registered exporters issue statements on origin.
Why it matters for forwarders
Origin determines both the duty rate and whether measures such as anti-dumping duties apply, so a wrong or missing proof of origin can cost the importer the preference or expose it to retrospective duty demands. Preferential origin must meet the specific product rule of the agreement, not simply the country where goods were shipped from, and customs can verify origin after import. Forwarders handling documentation should check which form the agreement requires, whether direct transport or non-manipulation rules apply to transhipped cargo, and whether the certificate must be presented at import or only held on file. Non-preferential COs issued by chambers often require supporting invoices or manufacturer declarations, so build lead time into the export schedule. Keep copies for the retention period set by the importing country, because origin verification requests can arrive years later.