USMCA Certificate of Origin: Rules, Requirements & How to Fill It Out (2026)

A USMCA certificate of origin is the document that qualifies your goods for 0% or reduced duty rates when importing from or exporting to Canada and Mexico. Without it, you pay the full MFN tariff — and in 2026, that means you're also stacking Section 122 (15%), Section 301, and Section 232 tariffs on top.

With USMCA certification, your goods are exempt from the Section 122 surcharge entirely. That's a 15% savings right off the top, before you even get to the preferential rate.

Here's the thing most importers get wrong: there's no official form. USMCA replaced the old NAFTA Certificate of Origin (CBP Form 434) with a flexible certification system. Any document works — a letter, an invoice notation, even an email — as long as it contains the 9 required data elements. I'll walk through exactly what those are and how to get them right.

Want to see the savings? Use our tariff calculator — compare your USMCA rate vs. standard MFN + Section 122 rate for any HTS code.

By VatCheck Research Team. Sources: USMCA Text Chapter 4 (Rules of Origin) and Chapter 5 (Origin Procedures), CBP USMCA FAQs, 19 CFR Part 182, USMCA Annex 4-B (Product-Specific Rules), Presidential Proclamation on Section 122 Annex II exemptions.

What Is a USMCA Certificate of Origin?

It's a formal certification that your goods qualify for preferential tariff treatment under the United States-Mexico-Canada Agreement (USMCA). The agreement replaced NAFTA on July 1, 2020, and the certification process changed significantly.

Three key differences from the old NAFTA certificate:

1. No official form required. Under NAFTA, you had to use CBP Form 434. Under USMCA, any document containing the 9 required data elements counts as a valid certification.
2. Self-certification by importer. Under NAFTA, only the exporter or producer could certify. USMCA lets the importer certify too — which gives you more control over your own preferential claims.
3. Blanket certifications up to 12 months. For identical goods shipped repeatedly, one certification covers a full calendar year.

The Three Names for the Same Agreement

You'll see this agreement called different things depending on who's talking:

• USMCA — United States (this is what CBP and US Customs use)
• CUSMA — Canada (Canada-United States-Mexico Agreement)
• T-MEC — Mexico (Tratado entre México, Estados Unidos y Canadá)

All identical. The rules, the certification, the origin criteria — everything is the same.

When Do You Need a USMCA Certificate?

You need one if:

• You're importing goods from Canada or Mexico and want to claim the preferential (usually 0%) tariff rate
• The MFN rate for your product is above 0% (if MFN is already 0%, USMCA adds no benefit — check with our calculator)
• You want the Section 122 exemption (USMCA-qualifying goods are exempt from the 15% surcharge)

You don't need one if:

• Your product's MFN rate is already 0% and there's no Section 122 surcharge
• Your goods don't originate in the USMCA territory (e.g., Chinese goods transshipped through Mexico — that doesn't qualify)
• You're importing under a different preference program (e.g., GSP, where applicable)

Timing flexibility: You can claim USMCA preference at the time of entry OR up to 1 year after importation. If you discover you missed a preferential claim, you can file a Post-Summary Correction to claim it retroactively.

The 9 Required Data Elements

Under USMCA Article 5.2, your certification must include these nine pieces of information. Miss one and CBP can reject your preferential claim.

1. Certifier Identification

State whether the certifier is the importer, exporter, or producer. This is the biggest change from NAFTA — importers can now self-certify.

2. Certifier Contact Information

Full name, title, address, telephone number, and email address of the person making the certification.

3. Exporter Information

Name, address, and contact details of the exporter. If the certifier IS the exporter, write "Same as certifier." If the producer is certifying and doesn't know the exporter, this field can be omitted.

4. Producer Information

Name, address, and contact details of the producer. If there are multiple producers, you can list them all or write "Various" — but then you need a separate certification for each producer if CBP requests verification.

5. Importer Information

Name, address, and contact details of the importer. If not known at the time of certification (common for blanket certs), write "Unknown."

6. Description of the Good

A description sufficient to relate it to the invoice and HTS classification. Must include the 6-digit HS code. Be specific enough that CBP can match it to the actual goods.

7. Origin Criterion

Which origin criterion the good satisfies: A, B, C, or D. I'll explain each below — this is the section where most mistakes happen.

8. Blanket Period (If Applicable)

If this is a blanket certification covering multiple shipments of identical goods, state the period. Maximum 12 months, aligned to a calendar year. Format: "From [date] to [date]."

9. Authorized Signature and Date

The certifier's signature and the date of certification. Electronic signatures are accepted.

Sample language CBP accepts:

"I certify that the goods described in this document qualify as originating and the information contained in this document is true and accurate. I assume responsibility for proving such representations and agree to maintain and present upon request or to make available during a verification visit, documentation necessary to support this certification."

Origin Criteria Explained: A, B, C, and D

This is where USMCA gets technical — and where the money is. Your product must meet at least one of these four criteria to qualify.

Criterion A: Wholly Obtained or Produced

The good is entirely grown, harvested, mined, fished, or otherwise obtained in the USMCA territory. No foreign materials at any stage.

Examples:

• Beef raised and processed entirely in the US or Canada
• Maple syrup produced in Canada from Canadian sap
• Copper ore mined in Mexico

This is the simplest criterion but also the narrowest. Most manufactured goods can't meet it.

Criterion B: Produced Entirely From Originating Materials

The good is manufactured in a USMCA country using ONLY materials that themselves qualify as USMCA-originating (they passed one of the four criteria independently).

Example: A wooden chair (HTS 9401.69) made in Mexico from lumber sourced in Canada and hardware sourced in the US. Every component already qualifies as USMCA-originating, so the finished chair qualifies under Criterion B.

Criterion C: Tariff Shift + Regional Value Content (Most Common)

The good is produced using non-originating materials, but those materials undergo a specified tariff classification change (tariff shift) during manufacturing AND the good meets the Regional Value Content (RVC) threshold.

This is the criterion most manufacturers use. It requires two things:

1. Tariff shift: The finished product's HTS classification must differ from the non-originating inputs at the level specified by Annex 4-B (usually a chapter, heading, or subheading change)
2. RVC threshold: The regional value content must meet the minimum percentage (varies by product, typically 50-75%)

Example: An electronic assembly (HTS 8543.70) manufactured in the US using Chinese-origin circuit boards (HTS 8534.00). The tariff shift from 8534 to 8543 satisfies the classification change requirement. If the RVC is above the threshold, it qualifies.

Criterion D: Product-Specific Rules

For certain goods, Annex 4-B has unique rules that don't fit neatly into the other criteria. These often apply to textiles, automotive products, and agricultural goods with special processing requirements.

Example: Automotive rules require not just RVC thresholds but also Labor Value Content (LVC) — at least 40% of the vehicle's value must come from workers earning $16+/hour. This is unique to USMCA and doesn't exist in most other trade agreements.

How to Calculate Regional Value Content (RVC)

RVC is the percentage of a good's value that originates in the USMCA territory. Two calculation methods:

Transaction Value Method

RVC = (TV - VNM) / TV × 100

Where:

• TV = Transaction value (price paid for the good, adjusted per customs valuation rules)
• VNM = Value of non-originating materials (cost of all foreign inputs)

Net Cost Method

RVC = (NC - VNM) / NC × 100

Where:

• NC = Net cost (total cost minus sales promotion, royalties, shipping, and packing costs)
• VNM = Value of non-originating materials

When to Use Each Method

| Method | Best For | Minimum RVC (General) | |---|---|---| | Transaction Value | Simple supply chains, high margins | 75% | | Net Cost | Complex manufacturing, low margins, automotive | 50% |

The Net Cost method typically produces a higher RVC percentage because it excludes certain costs from the denominator. If your Transaction Value RVC falls short, try Net Cost before giving up on the claim.

Worked Example: Furniture (HTS 9403.60)

A desk manufactured in Mexico:

• Selling price to US buyer: $500
• Chinese-origin steel legs: $40
• Chinese-origin drawer slides: $25
• All other materials sourced in Mexico/US

Transaction Value Method:

• TV = $500
• VNM = $40 + $25 = $65
• RVC = ($500 - $65) / $500 × 100 = 87%
• Requirement for Chapter 94: 75% RVC
• Result: QUALIFIES ✓

Without USMCA, this desk pays the MFN rate plus the 15% Section 122 surcharge. With USMCA certification, the total rate drops to 0%.

Worked Example: Auto Parts (HTS 8708)

Brake assemblies manufactured in the US:

• Selling price: $200
• Chinese-origin brake pads: $30
• German-origin hydraulic components: $45
• US-origin housing and labor: $125

Transaction Value Method:

• TV = $200
• VNM = $30 + $45 = $75
• RVC = ($200 - $75) / $200 × 100 = 62.5%
• Requirement for HTS 8708: 75% RVC under Transaction Value
• Result: DOES NOT QUALIFY under Transaction Value ✗

Net Cost Method:

• NC = $200 - $15 (shipping) - $5 (packing) = $180
• VNM = $75
• RVC = ($180 - $75) / $180 × 100 = 58.3%
• Requirement: 50% under Net Cost
• Result: QUALIFIES ✓

This is exactly why knowing both methods matters. The same product fails Transaction Value but passes Net Cost.

Product-Specific Rules to Watch

Not all products follow the general RVC rules. These categories have special requirements:

Automotive (Chapters 87, 8407-8708)

USMCA has the strictest automotive rules of any trade agreement:

• 75% RVC for vehicles (up from 62.5% under NAFTA) — phased in fully by 2023
• Labor Value Content (LVC): 40% of vehicle value must come from workers earning $16+/hour
• Steel and aluminum: 70% of steel and aluminum purchased must be melted/poured in North America
• Core parts (engines, transmissions, chassis): 75% RVC individually

Textiles and Apparel (Chapters 50-63)

USMCA uses a yarn-forward rule: the yarn must be produced in a USMCA country, the fabric must be woven/knitted in a USMCA country, and the garment must be cut and sewn in a USMCA country. Some exceptions exist for limited quantities of non-originating fibers.

Agricultural Products

Many agricultural goods qualify under Criterion A (wholly obtained). For processed foods, the rule depends on the specific product — some require all ingredients to originate, others allow a tariff shift.

Chemicals and Plastics (Chapters 28-39)

Generally require a tariff shift at the heading level (4-digit HTS change). Chemical reactions that change the molecular structure usually qualify as sufficient transformation.

When USMCA Preference Does NOT Help

USMCA preference eliminates or reduces MFN tariffs. But some tariffs exist outside the MFN framework and USMCA can't touch them:

Section 301 Tariffs (China)

If your product contains Chinese-origin components, Section 301 tariffs (7.5-100%) apply to the Chinese content regardless of where final assembly occurs. Assembling Chinese parts in Mexico doesn't make them USMCA-originating for Section 301 purposes.

Read our Section 301 investigation guide for current rates and the 2026 hearing outcomes.

Section 232 Tariffs (Steel, Aluminum, Copper)

Steel articles (50%), aluminum articles (50%), and copper articles (50%) pay Section 232 tariffs regardless of USMCA origin — unless the article is produced from metal that was melted and poured in a USMCA country.

Anti-Dumping and Countervailing Duties

AD/CVD orders are product- and country-specific. USMCA doesn't override them. If Canadian softwood lumber is subject to AD duties, a USMCA certificate doesn't help.

Transshipment

Goods must be shipped directly between USMCA countries. If they're routed through a non-USMCA country and undergo processing there, they may lose their originating status. Minor operations like unloading, reloading, or cold storage during transit don't disqualify — but any manufacturing does.

Common Mistakes That Get Certifications Rejected

Based on CBP verification patterns, these are the errors that trigger rejections or audits:

1. Wrong origin criterion. Using Criterion A when the product has any non-originating material (even packaging). If in doubt, use Criterion C.

2. Missing or incorrect HS code. The 6-digit code must match the product being imported. A wrong code means the wrong tariff shift rule applies — and your claim may not satisfy the correct rule.

3. Incomplete RVC documentation. If you claim Criterion C, you need to be able to prove the RVC calculation with supplier invoices, bills of materials, and cost breakdowns. Keep records for 5 years after the date of importation.

4. Blanket period exceeds 12 months. Blanket certifications max out at one calendar year. They must be renewed annually.

5. Certifier not authorized. The person signing must have actual authority. For importer self-certification, this is usually the customs compliance officer or a corporate officer.

6. Chinese components treated as originating. Assembly in Mexico doesn't make Chinese inputs USMCA-originating. The tariff shift and RVC rules look at where the materials originated, not just where the assembly happened.

CBP Verification Risk

CBP can verify any USMCA claim up to 5 years after importation. They'll request your certification, supporting documents (invoices, BOMs, RVC calculations), and may conduct an on-site verification at the producer's facility.

Penalties for a false certification: up to $10,000 per violation and potential loss of USMCA privileges for that product. Don't certify origin if you can't prove it.

How USMCA Interacts With the Current Tariff Environment

The May 2026 tariff landscape makes USMCA certification more valuable than at any point since the agreement took effect:

| Scenario | Without USMCA | With USMCA | Savings | |---|---|---|---| | Auto parts from Mexico (HTS 8708.30) | MFN 2.5% + Section 122 15% = 17.5% | 0% | 17.5 pts | | Furniture from Canada (HTS 9403.60) | MFN 0% + Section 122 15% = 15% | 0% | 15 pts | | Processed food from Mexico (HTS 2103.90) | MFN 6.4% + Section 122 15% = 21.4% | 0% | 21.4 pts | | Machinery from Canada (HTS 8479.89) | MFN 2.5% + Section 122 15% = 17.5% | 0% | 17.5 pts |

After July 24 (when Section 122 expires): USMCA still saves you the MFN rate — and if replacement Section 301 tariffs apply to Mexico or Canada, USMCA could be worth even more.

Run your specific HTS code through our calculator to see your exact savings.

Frequently Asked Questions

Can I self-certify origin as the importer?

Yes. USMCA allows the importer, exporter, or producer to certify. As the importer, you're responsible for the accuracy of the certification and must be able to produce supporting documentation for 5 years.

What happens if I don't have a certificate at time of entry?

You can claim USMCA preference retroactively for up to 1 year after importation by filing a Post-Summary Correction. You'll need to present the certification and pay any applicable interest on the duty difference.

How long is a blanket certification valid?

Up to 12 months, aligned to a calendar year. It covers multiple shipments of identical goods from the same producer. You must renew it each year.

Can CBP verify my certificate after the fact?

Yes. CBP has 5 years from the date of importation to verify any USMCA claim. They can request documentation and conduct on-site visits at the producer's facility in any USMCA country.

What are penalties for a false certification?

Up to $10,000 per false certification under 19 USC § 1592. Repeated violations can result in suspension of USMCA privileges and potential criminal referral.

Does USMCA help with Section 301 tariffs on Chinese goods assembled in Mexico?

No. USMCA preference eliminates MFN tariffs and the Section 122 surcharge, but Section 301 tariffs apply based on the country of origin of the materials. Chinese components remain subject to Section 301 regardless of where they're assembled.

Is there a minimum shipment value for USMCA claims?

No formal minimum. However, for shipments valued under $2,500, CBP may accept an informal declaration of origin instead of a full certification.

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Last updated: May 2026. USMCA rules of origin are subject to the July 2026 joint review, which may adjust thresholds for automotive, EV, critical mineral, and Chinese-component products. For current rates, use our calculator.