EU preferential origin: preparing for post-clearance verification

On importation, the administration grants preferential tariff treatment on the strength of a proof of origin. However, the administration may call that treatment into question years later. Post-clearance verification thus places a risk on the importer. The importer can control that risk only if it has organised, in advance, access to the supporting documents held by its supply chain.

Observation: the proof of origin in EU-Morocco trade

Morocco has concluded preferential agreements, foremost among them the Association Agreement with the European Union. These agreements make the reduction or elimination of customs duties conditional on the originating status of the goods. At the time of importation, a proof of origin evidences that status. Depending on the applicable rules of origin, that proof is either an EUR.1 movement certificate or an origin declaration. The exporter makes out that declaration on a commercial document.

For trade with the European Union, the Regional Convention on pan-Euro-Mediterranean preferential rules of origin has undergone revision. Since 1 January 2026, the Union has applied only the revised rules in its relations with the parties that have ratified the revised Convention. Pending ratification of that Convention by Morocco, exports from Morocco to the Union fall under the so-called transitional rules, according to the European Commission. The bilateral agreement lays down these transitional rules. Conversely, according to the same source, exports from the Union to Morocco fall under the revised Convention.

Decision No 1/2025 of the EU-Morocco Association Council of 2 October 2025 incorporated those transitional rules into Protocol 4. The decision entered into force on that same date. The transitional rules apply until 31 December 2027 at the latest. They cease to apply earlier if the revised Convention appears in the Bulletin officiel of Morocco before that date. The version concerned is the latest amended version published in the Official Journal of the European Union (Protocol 4, Article 2(2)).

Required statements and verification of the proof of origin

Decision No 1/2025 requires the statement “REVISED RULES” in Box 7 of the EUR.1 movement certificate issued under the transitional rules (Appendix A, Article 20(3)). According to the French customs administration, proofs of origin accompanying imports into the Union of products originating in Morocco must carry that statement. In contrast, that administration indicates that proofs made out in the Union for Morocco carry no such statement.

The same administration also refers to circular No 6722/233 of the Moroccan Customs and Indirect Taxes Administration of 10 February 2026 (operators’ notice No 26000062). According to that notice, the circular ended the refusal, in Morocco, of Union proofs of origin lacking that statement. It also confined the requirement for the statement to Moroccan exports to the European Union and Turkey. A check as at the date of each transaction is therefore necessary. It covers the regime applicable to each flow, the required statements and the state of ratifications.

Clearance on the basis of that proof does not close the matter. Indeed, the origin protocols establish administrative cooperation. Under that cooperation, the administration of the importing country may request a verification, after the event, from the authorities of the exporting country. The verification covers the authenticity of the proof or the accuracy of the information relating to origin. Such verification takes place either at random or whenever the administration has reasonable doubts.

Analysis: proof held by others

The difficulty arises from an asymmetry. The importer is the person liable for the duties. It therefore bears the recovery if the verification does not confirm origin. Yet the evidence needed to establish origin lies with the exporter and, beyond it, with the exporter’s own suppliers. This evidence takes the form of bills of materials, tariff headings of inputs, value calculations, suppliers’ declarations and proofs of origin of imported materials used under cumulation.

In the European Union, an exporter making out a proof of origin frequently relies on its suppliers’ declarations. Articles 61 to 66 of Implementing Regulation (EU) 2015/2447 govern those declarations. In particular, Implementing Regulation (EU) 2025/1728 has amended that regulation. Such declarations may cover a single consignment or a period of up to two years. Consequently, their absence, expiry or inaccuracy has a direct impact on the validity of the proof of origin presented in Morocco.

Where verification does not make it possible to confirm origin, the administration may refuse preferential treatment. The same applies where the authorities of the exporting country do not reply within the prescribed time limits. The administration then assesses duties at the standard rate. It may also bring proceedings for customs offences. The amount at stake often far exceeds the duty differential. This is because of pecuniary penalties and, where applicable, the surcharges and late-payment interest applicable in customs matters.

Analysis: what verification of a proof of origin actually covers

Verification operates on several levels. The first is formal. It covers the consistency of the description of the goods between the proof of origin, the invoice and the import declaration. It also covers the inclusion of the mandatory particulars. Finally, it covers compliance with the conditions for making out the origin declaration laid down by the applicable rules. Those conditions concern, in particular, the value of the consignment or approved exporter status.

The second is substantive: does the product satisfy the applicable rule of origin? For a wholly obtained product, the question is straightforward. For a processed product, however, the first step is to identify the list rule specific to its tariff heading. That rule may require a change of heading, cap the value of non-originating materials or impose specific working or processing. The next step is to demonstrate compliance with that rule. In this context, a tariff classification error, on exportation or on importation, is enough to distort the entire reasoning.

The third is documentary. The exporter must be able to produce all the supporting documents on which the proof of origin rests. That obligation runs throughout the retention period provided for by the protocol. An origin that is genuine but undocumented is, in practice, an origin that has not been proven.

Implications

For the importer, risk control takes shape before the verification. First, it requires knowledge of the exposed scope (imports under preferential arrangements over the period not yet time-barred). Second, it calls for a contractual requirement imposed on suppliers (an undertaking to produce supporting documents in the event of verification). Finally, it involves monitoring proofs of origin by supplier and by period.

Once verification has begun, the quality of the response depends on the ability to classify product lines rapidly. The relevant categories are lines with an origin confirmed by consistent supporting documents, lines open to regularisation, lines still awaiting supporting documents and lines whose origin is impossible to demonstrate. This classification makes it possible to focus the evidential effort where it is useful. It also makes it possible to assess, in the light of the results, whether a settlement approach is appropriate.

Points of attention

• A proof of origin that is formally valid does not guarantee origin. Indeed, verification goes back to the list rule and to the materials used.
• Long-term supplier’s declarations have a limited period of validity. Their expiry date therefore requires monitoring.
• Tariff classification determines the applicable rule of origin. Consequently, any divergence in classification between the exporting and importing countries requires an explanation.
• Each exchange with the administration requires a written record. Likewise, the submission of documents follows a structured order, proof of origin by proof of origin.
• The assessment of a settlement approach rests on quantified results, line by line.

References

• Euro-Mediterranean Agreement establishing an association between the European Communities and their Member States, of the one part, and the Kingdom of Morocco, of the other part, Protocol concerning the definition of the concept of ‘originating products’ and methods of administrative cooperation.
• Regional Convention on pan-Euro-Mediterranean preferential rules of origin, revised version; Decision No 1/2025 of the EU-Morocco Association Council of 2 October 2025 amending Protocol 4 concerning the definition of the concept of ‘originating products’ and methods of administrative cooperation (OJ L, 2025/2664, 31.12.2025); Council Decision (EU) 2025/2023 of 2 October 2025 (Union position).
• Commission Implementing Regulation (EU) 2015/2447, Articles 61 to 66; Commission Implementing Regulation (EU) 2025/1728 of 8 August 2025 amending Implementing Regulation (EU) 2015/2447 (OJ L, 2025/1728, 11.8.2025).
• Customs and Indirect Taxes Code (Morocco).
• European Commission, Access2Markets, “Pan-Euro-Mediterranean Convention (PEM)”; French Directorate-General of Customs and Excise (DGDDI), information sheet “Zone pan-euro-méditerranéenne et cumul diagonal de l’origine”, updated on 6 July 2026, and operators’ notice “Mentions à apposer sur la preuve d’origine dans le cadre de la convention régionale pan-euro-méditerranéenne” (February 2026) (pages consulted on 18 October 2026).

See also: Checklist – Post-clearance verification of preferential origin; Checklist – Proofs of origin: required documents; Template – Supplier’s declaration. Customs Compliance & Litigation practice.