Since March 2025, the U.S. charges a 25% national emergency tariff on most imports from Canada and Mexico. The tariff runs under the International Emergency Economic Powers Act (IEEPA). The one broad way out is proving your goods qualify as originating under the United States-Mexico-Canada Agreement (USMCA). Get it right and your shipment enters duty-free. Get it wrong and you pay 25%. This post covers the two jobs that matter: qualifying under the rules of origin, and claiming the exemption at entry.
The exemption took effect at 12:01 a.m. EST on March 7, 2025, per the White House amendment to the Canada tariff order. Tariffs already paid on goods entered before that time are not refundable, per trade counsel (Honigman, March 7, 2025) and CBP’s IEEPA FAQ. Importers who paid on entries between March 4 and March 6, 2025, should not expect retroactive relief.
What Is the USMCA Tariff Exemption in 2026?
The USMCA tariff exemption lets goods that qualify as originating under USMCA rules of origin enter the U.S. duty-free. It exempts those goods from the 25% IEEPA national emergency tariffs imposed on Canada and Mexico in March 2025. The exemption took effect at 12:01 a.m. EST on March 7, 2025. The rules below are current as of July 2026; the 2025 tariff landscape shifted repeatedly, so check CBP directly.
| Date | Event | Source |
|---|---|---|
| Feb 1, 2025 | Executive Orders 14193 (Canada) and 14194 (Mexico) signed; 25% IEEPA tariff (10% on Canadian energy) | White House / Federal Register |
| March 4, 2025, 12:01 a.m. EST | 25% IEEPA tariffs on Canada and Mexico take effect | Federal Register 2025-03665 |
| March 6, 2025 | Amendment orders signed, exempting USMCA-originating goods | White House |
| March 7, 2025, 12:01 a.m. EST | USMCA-compliant exemption effective; non-qualifying potash cut from 25% to 10% | White House / Federal Register 2025-03901 |
| April 11, 2025 | Presidential Memorandum expands the semiconductor/electronics carve-out, retroactive to April 5, 2025 | White House |
| May 2025 | CBP “New Tariff Requirements for 2025” fact sheet published | CBP |
| May 20, 2025 | Federal Register procedures for USMCA auto importers to report U.S. content | Federal Register 2025-08917 |
Who Qualifies for USMCA Duty-Free Treatment?
Importers, exporters, and producers trading goods among the U.S., Mexico, and Canada qualify when the good is “originating.” Origin is a legal determination, not a label. “Made in Mexico” proves nothing at customs. A good qualifies through one of four pathways under USMCA Chapter 4, per USTR’s USMCA rules of origin text.
- Wholly obtained or produced entirely in the region.
- Produced entirely from originating materials.
- Produced with non-originating materials that satisfy the product-specific rule of origin (tariff shift and/or regional value content).
- Special provisions, such as de minimis and rules for sets.
Are Product Carve-Outs the Same as the USMCA Exemption?
No. Two separate mechanisms exist. Product carve-outs exempt whole categories, such as semiconductors, electronics, pharmaceuticals, copper, and lumber, from specific tariff actions by executive order, regardless of origin. The USMCA exemption instead requires proving origin under the rules of origin with a certification of origin. They answer different questions, and a good can fall under one without the other.
A smartphone assembled in China gets no USMCA exemption but may fall under the electronics carve-out. A Mexico-built car with 75% regional content qualifies under USMCA. The carve-out and the USMCA exemption also attach to different tariff actions, so the correct claim depends on which tariff applies. The April 11, 2025 Presidential Memorandum expanded the semiconductor definition to cover smartphones, computers, and related electronics. Importers claim that expanded reciprocal-tariff exclusion using secondary HTS classification 9903.01.32 and must correct entries within 10 days of release, per CBP guidance (CSMS #64724565, April 11, 2025). USMCA origin, by contrast, is claimed under General Note 11 of the Harmonized Tariff Schedule of the United States (HTSUS) with a certification of origin, confirmed in the CBP 2025 Tariff Requirements fact sheet.
What Are the USMCA Rules of Origin?
USMCA rules of origin are product-specific tests keyed to Harmonized System (HS) classification. They decide whether a good counts as North American, and CBP applies them through General Note 11 of the HTSUS. Two mechanical tools do the work: the tariff shift rule and regional value content (RVC).
How does the tariff shift rule work?
The tariff shift rule requires non-originating inputs to change their tariff classification through North American processing. Foreign fabric under one HS heading becomes a finished garment under a different heading. The required shift level (chapter, heading, or subheading) varies by product. Find your rule by HTS code.
Look up your code and product-specific rule using the USITC HTS search tool and CBP’s USMCA guidance. Classification drives everything downstream, including which rule of origin applies.
How is regional value content calculated?
Regional value content (RVC) measures the North American share of a good’s value. USMCA Chapter 4, Article 4.5 sets the general baseline at 60% under the transaction value method or 50% under the net cost method, per USTR. Thresholds are product-specific, and there is no universal number. Autos require 75%.
Two formulas apply. Transaction Value method: RVC = (TV − VNM) / TV × 100. Net Cost method: RVC = (NC − VNM) / NC × 100. VNM is the value of non-originating materials. Net cost excludes sales promotion, royalties, shipping, and non-allowable interest. Net cost is mandatory for autos and used where transaction value is unreliable.
| Good | Threshold | Method | Source |
|---|---|---|---|
| General (non-auto) goods | 60% | Transaction value | USMCA Ch. 4, Art. 4.5 (USTR) |
| General (non-auto) goods | 50% | Net cost | USMCA Ch. 4, Art. 4.5 (USTR) |
| Passenger vehicles, light trucks, and core parts | 75% | Net cost | USTR USMCA Autos fact sheet |
| Complementary auto parts | 65% | Per Annex 4-B | USTR USMCA Autos fact sheet |
What is the de minimis rule?
The de minimis rule lets non-originating materials that fail the tariff shift still qualify, up to 10% of the good’s transaction value, per USMCA Chapter 4 (Article 4.12) via USTR. It stops trivial foreign content from disqualifying a good. Certain products, including some dairy and textile goods, face separate or stricter de minimis rules.
What Are the USMCA Rules for Automotive Parts in 2026?
Autos face USMCA’s strictest origin rules. Passenger vehicles and light trucks need 75% regional value content. A Labor Value Content (LVC) requirement ties a share of vehicle content to workers earning at least US$16/hour. North American steel and aluminum purchasing rules and core-parts rules also apply, per USTR. Every threshold below carries a primary source.
| Requirement | Threshold | Note | Source |
|---|---|---|---|
| Regional Value Content | 75% | Passenger vehicles, light trucks, and core parts; phased up from 62.5% under NAFTA, fully effective July 1, 2023 | Congressional Research Service IF12082; USTR |
| Labor Value Content (LVC) | 40% (cars) / 45% (light trucks) | Share of vehicle content made by workers earning ≥ US$16/hour | USTR USMCA Autos fact sheet |
| Core parts | Must independently qualify as originating | Engines, transmissions, bodies, chassis, and other listed parts | USMCA Annex 4-B (USTR) |
| U.S. content reporting | Model-level documentation | Auto importers submit U.S.-content data so the auto tariff applies only to non-U.S. value | Federal Register 2025-08917 (May 20, 2025) |
How Are USMCA Rules of Origin Different From NAFTA?
USMCA replaced the North American Free Trade Agreement (NAFTA) on July 1, 2020, and tightened origin rules. Auto RVC rose from 62.5% to 75%. A new Labor Value Content requirement at US$16/hour was added. NAFTA’s prescribed CBP Form 434 gave way to a flexible certification carrying nine minimum data elements.
| Area | NAFTA | USMCA | Source |
|---|---|---|---|
| Auto RVC | 62.5% | 75% | USTR USMCA Autos fact sheet; CRS IF12082 |
| Labor Value Content | None | 40%-45% at ≥ US$16/hour | USTR USMCA Autos fact sheet |
| Certification | Prescribed CBP Form 434 | No form; nine data elements on any document | 19 CFR 182.12 |
| Who can certify | Exporter or producer | Importer, exporter, or producer | USTR USMCA Origin Procedures (Ch. 5) |
What Is a USMCA Certification of Origin?
A USMCA certification of origin is the document that claims preferential duty-free treatment. USMCA prescribes no mandatory form. Any document, including a commercial invoice, works if it contains the nine minimum data elements from Annex 5-A. The importer, exporter, or producer can complete it, per 19 CFR 182.12.
What are the nine required data elements?
A valid USMCA certification of origin needs nine minimum data elements set out in Annex 5-A and 19 CFR 182.12. They identify the parties, describe the good, state the origin criterion, and carry an authorized signature. No government form is required. The table below lists all nine.
| # | Data element | Source |
|---|---|---|
| 1 | Certifier: identity, address, and whether importer, exporter, or producer | Annex 5-A / 19 CFR 182.12 |
| 2 | Certifier’s name, title, address, phone, and email | Annex 5-A / 19 CFR 182.12 |
| 3 | Exporter’s name, address, and contact (if different) | Annex 5-A / 19 CFR 182.12 |
| 4 | Producer’s name, address, and contact (if different) | Annex 5-A / 19 CFR 182.12 |
| 5 | Importer’s name, address, and contact (if known) | Annex 5-A / 19 CFR 182.12 |
| 6 | Description and HS tariff classification of the good (to 6 digits) | Annex 5-A / 19 CFR 182.12 |
| 7 | Origin criterion (A, B, C, or D) | Annex 5-A / 19 CFR 182.12 |
| 8 | Blanket period (if it covers multiple shipments) | Annex 5-A / 19 CFR 182.12 |
| 9 | Authorized signature, date, and certification statement | Annex 5-A / 19 CFR 182.12 |
When can you use a blanket certification?
A blanket certification covers multiple shipments of identical goods over a stated period, up to 12 months, per 19 CFR 182.12 (Annex 5-A, element 8). It saves issuing a fresh certification for every shipment. Enter the blanket period on the certification, and reissue it once the period ends.
How Do You Claim a USMCA Tariff Exemption at Customs?
Claim the exemption at entry. Classify the good, confirm its product-specific rule of origin, hold a valid certification of origin, and declare USMCA preference on the customs entry. Be ready to produce documentation on CBP request. The five steps below walk through it.
- Find your HTS code and product-specific rule using the USITC HTS search and CBP’s USMCA resources.
- Run the origin test: tariff shift and/or RVC, using net cost or transaction value.
- Complete the certification of origin with all nine data elements and the correct origin criterion.
- Declare USMCA preference at entry, and keep documentation ready to produce on CBP request.
- Retain all supporting records for five years.
Meet the direct shipment condition. Goods that transit a non-party country must stay under customs control and undergo no processing beyond unloading, reloading, splitting shipments, or operations needed to preserve them, per the transit and transshipment rules in USMCA Chapter 4. Further production abroad breaks originating status.
How Do You Prove USMCA Origin in a Customs Audit?
Keep every record supporting your claim for at least five years. That includes sourcing records, bills of materials, supplier declarations, production records, RVC calculations, and certifications. CBP can verify a claim by written request to the importer, exporter, or producer. A failed verification means paying full duty retroactively plus potential penalties.
CBP verification typically starts with an information request or questionnaire and can escalate to a verification visit. Keep purchase invoices, cost data, and your HS classification rationale organized so they survive scrutiny. A denied claim voids the exemption retroactively and exposes the importer to duties, interest, and penalties, per CBP guidance. This is general guidance, not legal or customs advice; complex classifications warrant a licensed customs broker or trade attorney.
What Are Common Mistakes When Claiming USMCA Exemptions?
The most expensive mistakes are claiming origin without running the product-specific test, incomplete certifications, misclassified HTS codes, and breaking the direct shipment condition. Confusing a product carve-out with USMCA origin is another. So is expecting refunds of tariffs paid before March 7, 2025.
- Assuming minor assembly equals substantial transformation.
- Missing one of the nine certification data elements.
- Wrong HTS classification, which sets the wrong rule of origin.
- Transshipment through a third country outside customs control, which breaks origin.
- Treating a product carve-out as if it were USMCA origin.
- Expecting refunds of IEEPA tariffs paid on entries before March 7, 2025.
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