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Preferential origin can reduce or fully remove import duty when a trade agreement applies between the countries and the goods meet its rules of origin. Proof is either an EUR.1 movement certificate or a statement on origin (for example under the REX system). A wrong or missing document means the full duty rate.
Why rules of origin exist
A trade agreement does not lower duty on its own. The preference has to be proven: the goods must hold preferential origin under that agreement, and you must present the correct document at clearance. These are two separate conditions. If the goods do not qualify, or you cannot evidence it, the importer pays the full rate.
Rules of origin define when goods count as originating in a country. A common criterion is sufficient processing: materials from outside the agreement area must undergo processing substantial enough to change the product status. The exact thresholds and how they are calculated depend on the agreement and the goods, so origin is determined per consignment, not once and for all.
EUR.1 or a statement on origin (REX)
Preferential origin is proven in two main ways. First, an EUR.1 certificate: issued for a specific shipment and endorsed in the customs procedure. Second, a statement on origin that the exporter places on an invoice or another commercial document. In many agreements this statement is made by an exporter registered in the REX system.
Which document is correct follows from the specific trade agreement and the conditions it sets. You cannot assume that a statement on the invoice is enough for every destination. So before a shipment moves, confirm which proof of origin the destination country accepts and who is entitled to issue it. The practical side of the second route, including the required wording and the REX threshold, is covered in our article on the statement on origin on the invoice.
What to watch so the preference is not lost
The preference is conditional and easy to lose. The most common traps:
- No document at the moment of clearance. Without valid proof of origin, customs applies the full duty rate.
- An error in the document: data inconsistent with the invoice, the wrong legal basis, or an exporter not entitled to make the statement.
- Rules of origin not met: the goods did not actually undergo the sufficient processing the agreement requires.
- Mismatch between documents: origin on the invoice differs from the proof of origin.
The impact is concrete: the full duty rate instead of the preferential one, an amended declaration and a top-up payment, and in a post-clearance check the duty to prove origin from documents. The preference only works when it matches a specific agreement, so guesswork is not enough here.
How does OTSL help?
OTSL runs customs clearance and plans border crossings, so we check origin alongside the rest of the documentation before the load reaches the border. We verify which proof of origin the destination requires, whether the data on the EUR.1 or the statement matches the invoice, and whether the sender is entitled to issue it. Questions of goods qualification and legal basis we settle against the specific trade agreement, and where a binding interpretation is needed we refer to the competent customs authority. The point is that the preference holds up in a check too. Write through our contact form, describe the goods and the direction, and we will walk through the requirements step by step. See also customs clearance and border procedures.
Step by step
- Check trade agreements. Verify whether a trade agreement offering tariff preferences applies between the export and import countries.
- Verify origin criteria. Review the specific manufacturing rules required for the commodity under the relevant agreement.
- Gather supporting evidence. Collect supplier declarations and production records that prove origin status.
- Issue proof of origin. Complete a statement on origin on the invoice or apply for an endorsed EUR.1 movement certificate.
- Submit at clearance. Present the valid origin document to customs authorities during the import declaration process.
Definitions
- Preferential origin: The customs status of goods meeting specific trade agreement rules, qualifying them for a reduced or zero duty rate.
- EUR.1 certificate (Euronorm 1): An official movement certificate issued or endorsed by customs authorities to confirm preferential origin.
- Statement on origin: A declaration made by an exporter on a commercial document certifying that goods satisfy origin rules.
- REX system (Registered Exporter system): An IT system allowing registered exporters to self-certify the preferential origin of goods.
When does this rule not apply?
Preferential treatment does not apply if goods fail to satisfy specific origin criteria, even if shipped directly from a country participating in a trade agreement.
The OTSL role
OTSL assists in coordinating international transport and customs procedures between Poland, the UK, Switzerland, and Norway. When planning groupage (LTL) shipments, our team checks documentation requirements to prevent delays, while further context on declarations is covered in the article on statements on origin and EUR.1 certificates.
