U.S. Tariffs on Mexico: USMCA Stack and Trump 25% IEEPA Order

U.S.-Mexico Trade Snapshot in 2026

Mexico surpassed China and Canada to become the United States’ top import source in 2023, a position maintained through 2026. The depth of U.S.-Mexico supply chain integration, particularly in autos, electronics, agriculture, and medical devices, means that tariff friction between the two countries has direct consequences for U.S. manufacturing costs and consumer prices.

Mexico as a U.S. Trading Partner

The U.S. imported approximately $505 billion in goods from Mexico in 2024, with automotive products, electronics, and agricultural goods representing the largest categories. Mexico’s position as the top U.S. import source reflects decades of nearshoring investment, preferential access under NAFTA/USMCA, and geographic advantages for just-in-time supply chains. The nearshoring and friendshoring strategy analysis covers why Mexico has become the primary destination for supply chain diversification from China. Our current U.S. tariff rates by country page compares Mexico’s tariff profile to other major trade partners.

Key Import Categories from Mexico

1. Motor vehicles and auto parts (HTS Chapter 87): pickup trucks, SUVs, auto parts from Tier-1 suppliers.
2. Electronics and electrical equipment (HTS Chapter 85): TVs, computers, wire harnesses, medical electronics.
3. Agricultural products and food (HTS Chapters 7-21): avocados, tomatoes, berries, beer, spirits.
4. Medical devices (HTS Chapter 90): surgical instruments, catheters, diagnostic equipment.
5. Industrial machinery (HTS Chapter 84): engines, compressors, HVAC equipment.
6. Steel and aluminum products (HTS Chapters 72-73, 76): structural steel, flat-rolled products.

Current U.S. Tariff Stack on Mexico Imports

The USMCA/non-USMCA determination is the central tariff question for every Mexico-origin entry. The 25-point rate differential between USMCA-qualifying (0%) and non-USMCA (25%) goods makes rules-of-origin compliance worth more per shipment than any other single cost factor in Mexico supply chains.

Statutory Authorities in Play

USMCA (United States-Mexico-Canada Agreement)

Goods meeting CBP USMCA rules of origin enter at 0%. Automotive ROO requires 75% regional value content plus labor value content thresholds. Non-automotive goods require tariff classification change (from covered HTS headings) and may have additional regional value content requirements under 19 CFR Part 182.

IEEPA Mexico executive order (February 2025)

Applied a 25% tariff on Mexican goods citing fentanyl trafficking and border security as authority triggers under IEEPA (50 USC §1701). USMCA-qualifying goods are carved out from the IEEPA rate, only non-USMCA goods face the 25%. This creates a binary tariff landscape: 0% (USMCA) or 25% (non-USMCA) on most product categories.

Section 232 steel and aluminum

• Mexican steel and aluminum within the USMCA TRQ enter at 0%.
• Over-quota volumes face 25% steel / 10% aluminum. See CBP quota monitoring for TRQ fill status.

Section 232 autos

Mexico-assembled vehicles and auto parts that meet USMCA ROO avoid Section 232. Non-USMCA Mexico-assembled vehicles face the 25% Section 232 auto tariff. Given Mexico’s deep auto industry integration, most automotive production meets USMCA ROO, but the Tier-1 parts supply chain contains non-USMCA components that require analysis.

MFN/NTR base rates

Applicable only when goods don’t claim USMCA or IEEPA applies, pre-USMCA MFN rates on Mexico goods were generally 0-5% for most manufactured goods.

How the Rates Layer on a Single Entry

A Mexico-assembled TV that qualifies under USMCA:

1. USMCA preferential rate: 0%.
2. IEEPA Mexico order: Exempt (USMCA carve-out).
3. Effective rate: 0%.

The same TV assembled in Mexico without meeting USMCA regional value content (e.g., using too many non-USMCA Asian components):

1. USMCA: Not eligible (fails ROO).
2. IEEPA Mexico order: 25%.
3. Effective rate: 25% on customs value.

The 25-percentage-point difference is the most significant binary tariff split in U.S. trade, USMCA qualification is worth approximately $250,000 per $1 million in Mexico-origin imports. Use the Captain tariff tracker to verify current IEEPA Mexico rates and any product-specific exemptions.

Top Affected HTS Chapters and Sectors

Mexico’s tariff exposure concentrates in sectors where USMCA qualification is most complex, automotive, electronics, and processed foods, and where non-USMCA goods previously paid near-zero MFN rates and now face 25% IEEPA.

Autos and Auto Parts (Ch 87)

Mexico is the world’s seventh-largest vehicle producer and the largest source of U.S. auto imports. GM, Ford, Stellantis, Nissan, Toyota, Honda, BMW, and Volkswagen all operate major assembly plants in Mexico. USMCA automotive ROO (75% regional value content) applies to passenger vehicles and light trucks. Most Mexico-assembled vehicles meet this threshold, and avoid both Section 232 and IEEPA as USMCA-qualifying goods at 0%. However, the Tier-1 and Tier-2 auto parts supply chain contains components sourced from Asia that may not meet USMCA ROO for the component level, creating parts-level tariff exposure even where finished vehicles qualify. Our USMCA rules of origin analysis covers automotive ROO in detail.

Electronics and Electrical Equipment (Ch 85)

Mexico’s electronics sector, centered in Guadalajara, Monterrey, Juárez, and Tijuana, produces TVs, computers, wire harnesses, power supplies, and consumer electronics for the U.S. market. Electronics USMCA ROO requires tariff classification change plus regional value content. Asian-origin components (displays, semiconductors) create ROO compliance complexity, a TV with a Korean display panel and Japanese chips may not meet USMCA RVC even when assembled in Mexico. Importers must verify component-level USMCA qualification or face 25% IEEPA on finished goods.

Agricultural Products and Beverages (Ch 7-21, Ch 22)

Mexican agricultural exports, avocados (now the largest U.S. import), tomatoes, berries, and cucumbers, are overwhelmingly USMCA-qualifying (agricultural goods have simpler ROO based on tariff shift). Beer, tequila, and mezcal (Ch 22) from Mexico are well-established USMCA-qualifying products. However, processed food products with complex ingredient sourcing may face USMCA compliance questions that require manufacturer-level ingredient documentation. Our tariff and customs duty consulting team handles food product USMCA origin analysis.

Medical Devices (Ch 90)

Mexico has become a leading global medical device manufacturer, exporting approximately $15 billion annually in surgical instruments, catheters, stents, and diagnostic devices to the U.S. Medical devices are among the most USMCA-qualified categories: most are produced from regional inputs with limited Asian-origin components. USMCA qualification preserves the 0% rate on a high-value, high-margin export category. Importers of Mexico-origin medical devices should maintain active USMCA certification programs given the 25% IEEPA alternative rate.

How Importers Calculate Landed Cost on Mexico-Origin Goods

Mexico landed cost modeling has two distinct scenarios: USMCA-qualifying (0%) and non-USMCA (25% IEEPA). The critical analysis is whether each specific product and supplier meets USMCA ROO, and documenting that qualification through supplier certifications updated at minimum annually.

Worked Example Using the Tariff Calculator

Use CargoTrans Captain’s tariff calculator and our Captain tariff tracker to model Mexico-origin goods by HTS code and USMCA status. For a $2,000,000 CIF auto parts entry (HTS 8708): USMCA qualifying = 0% = $0 duty. Non-USMCA = 25% IEEPA = $500,000 duty. Plus potential 25% Section 232 on applicable auto parts: additional $500,000. Total non-USMCA exposure: $1,000,000 on a $2,000,000 entry.

Common Landed-Cost Pitfalls

• Accepting Mexican supplier USMCA certificates without verifying the underlying ROO analysis and component sourcing.
• Missing that some auto parts categories require both tariff classification change AND regional value content, not just one.
• Overlooking IEEPA Mexico order applicability on goods that previously paid 0% MFN under NAFTA/USMCA.
• Failing to update USMCA certifications annually, expired certifications expose importers to post-entry CBP audits with retroactive duty assessment.
• Not separating USMCA-qualifying and non-USMCA goods in the same commercial invoice.

Mitigation Strategies for Importers Sourcing from Mexico

Mexico’s primary mitigation strategy is USMCA qualification optimization, ensuring as many goods as possible meet ROO for 0% access. Beyond that, Section 232 exclusions and IEEPA tariff refund monitoring provide additional tools.

USMCA Qualification and Rules-of-Origin Optimization

For products on the margin of USMCA qualification, USMCA rules of origin analysis by our team identifies component-level sourcing changes that enable USMCA qualification. Substituting a USMCA-origin display panel for an Asian-origin equivalent, for example, can shift a TV from 25% non-USMCA to 0% USMCA. The incremental component cost is often far less than the 25% duty savings on finished goods value.

IEEPA Tariff Refund Monitoring

The IEEPA tariff refunds page tracks any refund mechanisms announced for duties paid on the IEEPA Mexico executive order. If exemptions or refunds are issued for specific categories, early filing is critical. Our tariff consulting firm team monitors IEEPA Mexico order developments in real time.

First Sale for Export

For Mexico imports transacting through intermediaries, First Sale for Export can reduce the dutiable value base. For non-USMCA goods where IEEPA 25% applies, First Sale reduces the customs value, and therefore the duty base, by eliminating intermediary markups. On a 25% rate, a 15% First Sale reduction in value reduces duty by approximately 15% as well.

Importers managing multi-origin supply chains can benchmark landed costs across our full country tariff series: Thailand, Malaysia, European Union, Taiwan, Brazil, Indonesia, Japan, South Korea, Vietnam, and India.

Frequently Asked Questions