Triplicate

USMCA certificate of origin: the 9 data elements, blanket period and thresholds

Under the USMCA there is no official certificate of origin form. To claim preferential duty, the importer needs a certification of origin completed by the importer, exporter or producer, in any format, that contains nine minimum data elements. It can be on the invoice, can cover identical goods shipped over up to 12 months and is valid for four years.

Checked against official sources: 2026-10

At a glance

AgreementUSMCA in the US, CUSMA in Canada, T-MEC in Mexico; in force since 1 July 2020, replacing NAFTA
FormNo prescribed form; CBP Form 434 (the old NAFTA certificate) is no longer used
Who can certifyThe importer, exporter or producer of the good
Minimum data elements9, listed in Annex 5-A of the agreement
Blanket periodMultiple shipments of identical goods within a period of up to 12 months
ValidityFour years from the date the certification was completed
Low-value waiverUS: commercial imports with originating value up to USD 2,500; Canada: value for duty up to CAD 3,300; the agreement's floor is USD 1,000
RecordsUS importers at least five years from importation; Canada six years

How a USMCA claim works

The importer claims preference at entry. In the US this is done on the entry summary by putting "S" or "S+" before the HTSUS subheading of each originating good, and the certification must be in the importer's possession when the claim is made. CBP may ask for a copy, and the importer is responsible for the truth of the claim.

A certification can be completed by the importer, exporter or producer. An exporter that is not the producer may rely on the producer's written representation that the good is originating. It must be signed and dated by an authorised person; electronic and digital signatures are accepted. The US accepts certifications in English, French or Spanish; for Canada the CBSA lists English or French.

The nine minimum data elements (Annex 5-A)

Thresholds, records and late claims

The agreement lets each country skip the certification for low-value imports of at least USD 1,000. The US does not require a copy for non-commercial imports or commercial imports whose originating goods are worth USD 2,500 or less, and Canada sets CAD 3,300 for value for duty; both can still ask for one if shipments are split to avoid the rule. Mexico had up to three years and six months after entry into force to accept certifications completed by the importer.

US importers must keep the certification and supporting records for at least five years from importation, and Canada asks for six years. If no claim was made at entry, a US importer can claim the preference and a refund within one year after the date of importation. Even when a good qualifies, other US duties can still apply; see Triplicate's note on US import duties.

Step by step

  1. Confirm the good's HS code and the USMCA rule of origin (origin criterion) it meets.
  2. Decide who certifies: the importer, exporter or producer, based on who has the origin information.
  3. Write the nine data elements on the invoice or a separate document, add the certification statement, sign and date it.
  4. Use a blanket period of up to 12 months for repeated identical goods, and give the importer the certification before entry.
  5. Keep the origin records (five years in the US, six in Canada) and correct any claim promptly if the information turns out wrong.

Documents you usually need

Common problems and how to avoid them

The importer asks for the old NAFTA form or CBP Form 434.

What to do: Explain that USMCA has no prescribed form; provide the nine data elements and the certification statement on the invoice or a separate document.

The HS code on the certification is missing or not at the 6-digit level.

What to do: Add the HS classification to at least 6 digits so it matches the importer's tariff line.

A blanket certification covers more than 12 months or different goods.

What to do: Limit the blanket period to 12 months and to identical goods; issue a new certification for new products.

Customs finds the certification illegible, defective or incomplete.

What to do: Supply a corrected certification; the agreement gives the importer not less than five working days to do so.

Sources

  1. USMCA Frequently Asked Questions U.S. Customs and Border Protection (CBP)
  2. Origin Certification Requirements: USMCA Informational Fact Sheet U.S. Customs and Border Protection (CBP)
  3. 19 CFR Part 182: United States-Mexico-Canada Agreement Electronic Code of Federal Regulations (eCFR)
  4. USMCA Chapter 5: Origin Procedures Office of the U.S. Trade Representative (USTR)
  5. Memorandum D11-4-14: Certification of Origin Under Free Trade Agreements Canada Border Services Agency (CBSA)

Rules change often. This note is practical guidance based on the sources above, not legal advice. Confirm current requirements with the authority, your importer or a licensed customs broker before you ship.

Port codes by country

Share with a colleagueWhatsAppLinkedInX

Trade notes

Had this problem? Share how you solved it

Tell us what happened and what worked. We read every message. With your permission we may add your case to this note, without your name or company.

Common questions

Is there an official USMCA certificate of origin form?

No. Any format is accepted, including the commercial invoice, as long as it has the nine minimum data elements and the certification statement. CBP Form 434 is no longer in use.

Who can sign a USMCA certification of origin?

The importer, exporter or producer of the good. A responsible official or authorised agent with knowledge of the facts signs and dates it, and electronic signatures are accepted.

How long is a USMCA certification valid?

Four years from the date it was completed. A single certification can cover one shipment or identical goods over a blanket period of up to 12 months.

Do I need a certification for a small shipment?

Not for US commercial imports with originating goods worth USD 2,500 or less, or Canadian imports with value for duty up to CAD 3,300, unless shipments are split to avoid the rule. Records proving origin must still be kept.

Can I claim USMCA after the goods have been imported?

Yes. In the US the importer can make a post-importation claim and request a refund within one year after the date of importation.

More free tools

Triplicate is free and keeps getting better. Found it useful? Support Triplicate ♥