USMCA Certification of Origin: Data Elements and the One-Year Refund Window

Key Points

• USMCA does not require a specific form; any document with the nine required data elements qualifies as a valid certification of origin.
• An importer can claim preferential USMCA duty treatment at the time of entry or, if duties were paid, file a post-import claim for refund under 19 U.S.C. 1520(d) within one year of the date of importation.
• The certification must be in the importer's, exporter's, or producer's possession before the claim is filed; a retroactive certification obtained solely to support a post-import claim is still valid as long as it is based on information known at the time of importation.
• Importers, exporters, and producers must retain records supporting an origin determination for a minimum of five years from the date of importation.
• CBP may verify a USMCA claim by requesting the certification and supporting records; failure to produce them can result in denial of preference and assessment of applicable duties.

On this page

1. What USMCA certification of origin is
2. Required data elements for a valid certification
3. Claiming preference at entry
4. Post-import refund claims under 19 U.S.C. 1520(d)
5. Recordkeeping obligations
6. CBP verification and consequences of a failed claim
7. What importers should do
8. Key references

A USMCA certification of origin is the document that substantiates a claim for preferential (reduced or zero) duty rates on goods traded among the United States, Canada, and Mexico. It can be prepared by the importer, exporter, or producer, and it does not need to be a government-issued form. Importers who pay duties at entry and later obtain qualifying documentation have up to one year from the date of importation to file a post-import refund claim under 19 U.S.C. 1520(d).

The links in this article go to the primary documents: the statutes, regulations, Federal Register notices, and official CBP guidance themselves. Read the source.

What USMCA certification of origin is

Unlike some earlier free trade agreements that required a standardized government form, USMCA allows a flexible certification. The agreement and its implementing regulations permit the importer, exporter, or producer of the good to certify origin. There is no prescribed CBP form number that must be used. What matters is that the document contains all required data elements and is accurate and complete.

The certification can appear on a commercial invoice, a standalone letter, or any other business document. It may cover a single shipment or, when goods are imported repeatedly, a blanket certification covering multiple shipments within a period not exceeding 12 months.

CBP has published detailed guidance on USMCA administration, including the certification requirements, on its USMCA trade page at cbp.gov. The implementing regulations appear in the Code of Federal Regulations, Title 19, Part 182.

Required data elements for a valid certification

A certification of origin that does not contain all required data elements is invalid and will not support a preferential claim. The nine required elements are:

1. Certifier's indication of whether it is the importer, exporter, or producer.
2. Certifier's name, address (including country), telephone number, and email address.
3. Exporter's name, address, email, and telephone number (if different from the certifier).
4. Producer's name, address, email, and telephone number (if known and different from the certifier or exporter; multiple producers may be listed or the information may be marked confidential).
5. Importer's name, address, email, and telephone number (if known and different from the certifier).
6. Description of the good and, if applicable, the Harmonized System tariff classification number (to six digits). The description must be detailed enough to identify the good. You can look up HTS classifications at hts.usitc.gov.
7. Origin criterion under which the good qualifies (for example, "wholly obtained," "produced entirely in the territory," or the applicable tariff shift or regional value content rule).
8. Blanket period (if the certification covers multiple shipments), stated as a date range not exceeding 12 months.
9. Authorized signature and date, along with a statement that the information is accurate and complete and that the certifier will promptly notify any person to whom it was given if it needs to be corrected.

A missing or inaccurate data element does not automatically result in penalties, but it does give CBP grounds to reject the claim and demand payment of the otherwise applicable duties. Getting all nine elements right before the goods arrive avoids downstream problems.

Determining whether a product actually qualifies under USMCA often requires a rules-of-origin analysis. For background on one of the core tests used to establish non-preferential origin more broadly, see our article on the substantial transformation test, which provides useful conceptual grounding even though USMCA uses tariff-based and regional value content rules rather than substantial transformation.

Claiming preference at entry

The standard path is to make the USMCA claim on the entry summary filed at the time of importation. The importer indicates the preference claim in the entry data submitted through CBP's Automated Commercial Environment (ACE). The certification itself is not submitted to CBP with the entry; it is retained by the importer and produced only if CBP requests it during a verification.

An importer who makes the claim at entry but cannot immediately produce a valid certification is exposed: if CBP selects the entry for verification and no qualifying documentation exists, the claim will be denied. Brokers and compliance managers should confirm that a certification is in hand, or that the importer has written authorization to rely on a producer's or exporter's certification, before the entry is filed.

Post-import refund claims under 19 U.S.C. 1520(d)

An importer who did not make a USMCA claim at entry, or who made a claim that was not accepted, may still recover the excess duties paid by filing a post-import claim under 19 U.S.C. 1520(d). The critical constraint is the deadline: the claim must be filed within one year of the date of importation.

What the one-year window means in practice

The one-year period runs from the actual date of importation of each entry, not from the date the entry was liquidated or the date the importer obtained the certification. Missing this deadline is fatal to the refund claim; there is no CBP mechanism for extending it.

Importers who routinely import qualifying USMCA goods should audit their entries on a rolling basis, at least quarterly, to identify shipments where duties were paid but a USMCA claim was not made. Any entry approaching the one-year mark needs immediate attention.

How to file the post-import claim

The claim is submitted in writing to the CBP port of entry where the entry was filed. It must include:

• A written declaration that the good qualified as originating at the time of importation.
• A copy of the certification of origin (or, if the importer is relying on a producer's or exporter's certification, a copy of that document).
• Any other information CBP requires to verify the claim.

The procedural requirements for 1520(d) claims are set out in 19 C.F.R. Part 182. Review the subpart covering post-importation claims for the specific filing mechanics and any port-specific instructions.

Retroactive certifications

A certification prepared after importation is permissible as the basis for a 1520(d) claim, provided that the underlying facts supporting origin existed at the time the goods were imported. In other words, the certifier cannot retroactively manufacture origin; the certification must accurately reflect conditions that were true when the goods crossed the border.

Recordkeeping obligations

All parties to a USMCA transaction have recordkeeping obligations. Importers, exporters, and producers must retain all records that support an origin determination, including the certification itself, cost records, bills of materials, production records, supplier declarations, and any other documentation used to establish that the rules-of-origin criteria were met.

The retention period is a minimum of five years from the date of importation. Records must be made available to CBP upon request during a verification. Failure to produce records is treated the same as a failure to demonstrate origin: the preference claim is denied.

Importers should also be aware that country-of-origin marking obligations under 19 U.S.C. 1304 are separate from preferential origin claims. A product can qualify for USMCA preferential rates and still be required to bear a "Made in Mexico" or "Made in Canada" marking. For a full treatment of marking requirements and the 10% marking duty, see our article on country-of-origin marking requirements.

CBP verification and consequences of a failed claim

CBP may verify a USMCA preferential tariff claim at any time, either by requesting documents from the importer directly or by initiating a verification with the exporter or producer in the country of export, coordinated through that country's customs authority.

During a verification, CBP will examine whether:

• The certification contains all required data elements and is complete and accurate.
• The good actually meets the applicable rule of origin (tariff shift, regional value content, or other criterion stated in the certification).
• The recordkeeping supporting the claim is adequate and retained.

If CBP determines that a claim is unsupported, it will deny the preference and issue a bill for the duties that should have been paid, plus interest. Repeated or systematic misuse of USMCA claims can expose importers to penalties under CBP's penalty authorities. A denial of a claim after liquidation may be protested through CBP's formal protest procedures within the applicable timeframe.

What importers should do

• Collect certifications before filing entry. Confirm that a complete, nine-element certification is in hand before the entry summary is filed. For ongoing supplier relationships, request a blanket certification covering a 12-month period and calendar its expiration.
• Run a quarterly lookback on entries where duties were paid. Identify any USMCA-eligible entries where a preferential claim was not made, check whether they are within the one-year window, and file 1520(d) claims promptly for those that qualify.
• Build and maintain an origin file. For every USMCA claim, assemble the supporting records (bills of materials, cost data, supplier certifications, production records) at the time of importation and retain them for at least five years.
• Review blanket certifications annually. A blanket certification expires after 12 months. Set calendar reminders to request renewals from exporters and producers before the expiration date so no lapse in coverage occurs.

Key references

• 19 U.S.C. 1520(d) -- the statutory authority for post-importation preferential tariff claims and the one-year filing deadline.
• 19 C.F.R. Part 182 -- CBP's USMCA implementing regulations, covering certification requirements, post-importation claims, recordkeeping, and verification procedures.
• CBP USMCA Trade Page (cbp.gov) -- agency guidance, CSMS messages, and operational instructions on USMCA administration.
• Harmonized Tariff Schedule of the United States (hts.usitc.gov) -- official HTS used to identify the six-digit classification required on the certification.
• 19 U.S.C. 1304 -- country-of-origin marking statute, separate from but related to preferential origin claims.
• Federal Register (federalregister.gov) -- source for USMCA-related rulemaking and notices; search "USMCA" or "19 CFR Part 182" for relevant rules.