Validity of Certificate of Origin (CO) Issued with a Proforma Invoice (PI) Number vs. a Different Commercial Invoice (CI) Number Released

You have inquired whether a Certificate of Origin (CO) issued using a Proforma Invoice (PI) identification number remains valid for preferential tariff application when the final Commercial Invoice (CI) bears a different number. To summarize, the CO will be accepted as valid for preferential tariff treatment, provided that the transaction's essential details remain consistent and the relationship between the documents can be verified.

Specifically, if a CO is issued based on a PI number and the subsequent CI has a different number, the CO is still applicable for FTA benefits if all material information in the PI and CI is identical and both the PI and CI are presented during customs clearance. For this purpose, 'identical' means that core transaction data—such as item description, specifications, quantity, unit price, total amount, consignor, and consignee—must match exactly across all documents.

Why is this treatment permitted?

A Certificate of Origin is a document certifying that specific goods satisfy the rules of origin under a particular trade agreement. In this context, the invoice number serves merely as a means of identifying a specific transaction. A Proforma Invoice (PI) is essentially a 'provisional invoice' used for quoting or establishing terms before shipment, while a Commercial Invoice (CI) is the 'final invoice' used for actual shipment and payment claims.

It is common for a CO to be issued using a PI number when the final CI has not yet been generated at the time of application. The crucial factor is proving that the originating status of the goods and the transaction details specified in the CO align perfectly with the goods being cleared through customs. If the PI and CI are identical in content (excluding the invoice number) and both are submitted to demonstrate their correlation, customs authorities generally recognize the substantive identity of the transaction and accept the validity of the CO.

Precautions and Additional Information

• Maintain Data Consistency: Even if the invoice numbers differ, all essential transaction data—including item description, quantity, value, shipment date, and contracting parties—must be consistent between the PI, CI, and CO. Discrepancies in these core details are highly likely to invalidate the CO.
• Cross-Reference Documents: If possible, it is advisable to include a remark on the CI such as "This invoice refers to Proforma Invoice No. [PI Number]." This explicit link greatly facilitates the customs review process.
• Preparation for Post-Clearance Audits: Even after preferential tariffs are granted, customs authorities may conduct post-clearance audits to verify the accuracy of the CO. Therefore, all related documents (PI, CI, Packing List, B/L, etc.) must be strictly maintained and ready for submission upon request.
• FTA Specificity: While most FTA regimes allow for such flexible interpretations, certain agreements or specific countries may adopt more conservative procedures. For high-volume or recurring trades, it is recommended to consult with the exporting country's customs or the CO-issuing body in advance.
• Re-issuance of CO: If there are significant differences between the PI and CI, or if there is a high risk that customs will not recognize the document link, the most secure method is to request the exporter to re-issue a new CO containing the final CI number.

In conclusion, a CO issued with a Proforma Invoice number is generally acceptable for preferential tariff application as long as the content matches the Commercial Invoice and the consistency of the transaction is clearly demonstrated by submitting both documents. To minimize potential risks, always ensure the consistency of your documentation and be prepared to provide substantiating evidence if required.