Market Intelligence USMCA and US Tariffs on Mexico:
April 2026 Market Update
— Logistics Impact Analysis

Registration dateAPR 23, 2026

Logistics Market Intelligence UpdateApril 21, 2026

How Has the USMCA and US-Mexico Tariff Structure Changed as of April 2026?

Key Takeaways

USMCA (the United States-Mexico-Canada Agreement) entered force in July 2020 as a regional duty-free pact, with a joint review scheduled for July 1, 2026. USMCA-compliant goods are exempt from MFN duties.
The 25% IEEPA-based tariff on Mexican goods was terminated on February 20, 2026 by the US Supreme Court. In its place, a temporary 10% global tariff under Trade Act Section 122 has applied since February 24, 2026.
Effective April 6, 2026, Section 232 (Trade Expansion Act) tariffs were restructured from '50% × metal content value' to '50% (primary) or 25% (derivatives, some are exempted or applied 15%) × total value' — significantly expanding duty exposure on steel, aluminum, and copper products.
Mexico's tariff advantage versus other sourcing regions has narrowed, but it remains a strategic production base for USMCA-compliant goods. Now is the time for shippers to review HS Codes and redesign supply chains.

USMCA Essentials — With July 2026 Joint Review Approaching

USMCA (United States-Mexico-Canada Agreement) is the North American free trade pact that took effect in July 2020, replacing NAFTA with the goals of eliminating regional tariffs and integrating supply chains. While the baseline principle is duty-free trade within the region, separate tariffs apply to steel, aluminum, and copper.

Category	Details
Effective date	July 1, 2020
Member countries	United States, Mexico, Canada
Core principle	Duty-free within region (for USMCA origin-compliant goods)
Exceptions	Steel, aluminum, copper (separate tariff regimes)
Review timing	July 1, 2026 — 6-year joint review cycle
Logistics impact	Key driver of expanded Mexican production bases for US exports

💡 Why Did Mexico Become a Production Hub?

USMCA-compliant goods are exempt from MFN duties when exported to the US.
Mexico's combined logistical advantages (shorter lead times, available inland transport) over China and Southeast Asia have driven the nearshoring movement.
However, tariff changes in 2025–2026 have narrowed USMCA's competitive edge compared to the past.

US Tariff Policy on Mexico — Timeline by Legal Basis

Since 2025, US tariffs on Mexico have been imposed under three different legal frameworks. Each has different scope, rates, and timing — some have already ended or been restructured.

Three Tariff Frameworks Compared

Category	IEEPA (Int'l Emergency Economic Powers Act)	Section 122 (Trade Act)	Section 232 (Trade Expansion Act)
Effective period	Mar 4, 2025 – Feb 20, 2026 (ended)	Feb 24, 2026 – Jul 24, 2026 (temporary)	Mar 23, 2018 – Present (ongoing)
Scope	All goods (USMCA-compliant excluded)	All goods (USMCA-compliant excluded)	Steel, aluminum, copper, and derivatives
Rate	25% (non-USMCA)	10% (non-USMCA)	50% × metal content value → total value × 50%/25%
Current status	Terminated (Supreme Court ruling)	In force (temporary)	Restructured Apr 6, 2026

※ Goods subject to Section 232 are excluded from Section 122. That is, primary steel and aluminum products are tariffed only under Section 232.

Tariff Timeline — Key Events by Date

① USMCA-compliant origin exempts MFN duties
USMCA-compliant goods have been consistently exempt from MFN duties since the July 2020 effective date. However, steel, aluminum, and copper remain subject to separate Section 232 tariffs.
② IEEPA tariffs terminated (Feb 20, 2026)
The 25% IEEPA-based tariff that began in March 2025 was terminated on February 20, 2026 by a US Supreme Court ruling. The removal of this broad tariff on non-USMCA goods temporarily eased import cost pressure.
③ Trade Act Section 122 tariff took effect (Feb 24, 2026)
Immediately after IEEPA ended, a temporary 10% global tariff under Trade Act Section 122 took effect. It runs through July 24, 2026, with USMCA-compliant goods excluded.
④
Trade Expansion Act Section 232 tariff structure overhauled (Apr 6, 2026)
The most significant change. Previously, Section 232 was calculated as “metal content value × 50%.” From April 6, 2026, the basis shifted to “total value.”
- Primary steel/aluminum products: 50% of total value (steel plate, bars, aluminum bars, etc.)
- Steel/aluminum derivatives: 25% of total value (refrigerators, washers, dryers, etc.)
- Exceptions: Items with less than 15% metal weight or negligible metal content are exempt

Tariff Status by Product— As of April 6, 2026

Following the Section 232 restructuring, product-level tariff exposure has been reorganized as follows.

Product category	Section 122	Section 232	Total tariff	Notes
Primary steel/aluminum	Excluded	50%	50%	Sec 232 applies; Sec 122 excluded
Derivatives (metal ≥ 15% by weight)	Excluded	25%	25%	Refrigerators, washers, dryers, etc.
Derivatives (temporary relief)	Excluded	15% (25% from 2028)	15% (25% from 2028)	Critical for US grid/supply — HV transformers, industrial machinery
Derivatives (metal < 15%)	0% or 10%	Exempt	0% or 10%	Exempt if it qualifies for USMCA

※ Some industrial machinery and grid equipment with metal content above 15% benefit from a temporary 15% rate through 2027.

Winners and Losers After the Restructure

Category	Affected products	Reason
Winners	Cosmetics, food, and products with less than 15% steel/aluminum content	Excluded from Section 232 → tariff exempt (when qualifying for USMCA)
Losers	Certain machinery, appliances, and auto parts	Shift to total-value basis increases duty burden

How Much Has the Tariff Burden Actually Changed? — Simulation Comparison

Consider a hypothetical product (e.g. washing machine) valued at $1,000 with metal content worth $300.

Case 1. Mexico-produced → exported to the US

Period	Calculation	Tariff amount
Pre-Trump 2nd term	USMCA-compliant = duty-free	$0
Jun 2025 – Apr 5, 2026	Metal content $300 × Section 232 rate 50%	$150
From Apr 6, 2026	Total value $1,000 × Section 232 rate 25%	$250

📈 What the Section 232 Basis Change Means

With the shift from metal-content-value to total-value basis, tariff burden on the same product rose from $150 to $250 — roughly 67% higher.
Products with higher unit price and lower metal content see the steepest tariff increases.
Appliance derivatives (refrigerators, washers, dryers) face the largest increase under the 25% total-value basis.

Case 2. Southeast Asia-produced → exported to the US

Period	Calculation	Tariff amount
From Apr 6, 2026	Total value $1,000 × Section 232 rate 25% + MFN	$250 + α

Because Southeast Asian nations don't have an FTA with the US, they bear Section 232 tariffs plus MFN duties on top.

💡 Key Insight — Mexico's Edge Narrowed, but Still Meaningful

Mexico's tariff advantage over Southeast Asia has narrowed compared to the past. However, USMCA-compliant products remain MFN-exempt — preserving a relative advantage.
Mexico still outperforms Southeast Asia on US logistics efficiency: shorter lead times and inland transport options.
In response to tariff changes, reviewing HTSUS code (10-digit HS Code in U.S.) and reconfirming USMCA origin qualification is essential.

Shipper Action Plan — 5 Items to Review Now

Tariff structure shifts directly impact supply chain design and cost structures. Ahead of H2 2026, here's what shippers should review.

① Reverify USMCA origin qualification
Reconfirm USMCA qualification product-by-product for Mexico-produced goods. Also check for potential changes to Certificate of Origin requirements.
② Consider HTSUS Code reclassification
Under the Section 232 overhaul, the same product can face different rates depending on HTSUS Code classification. Products near the “15% metal content by weight” threshold especially need reclassification review with a customs broker.
③ Run supply chain redesign simulations
Simulate total costs by production origin — Mexico, Southeast Asia, Korea — to re-evaluate optimal production bases. The ripple effect is largest for steel and aluminum derivatives where Section 232 exposure has expanded.
④ Prepare for the July 2026 USMCA review
With USMCA's 6-year joint review approaching on July 1, 2026, build scenario-based response strategies (renewal / amendment / partial reform). Automotive parts and steel/aluminum industries face direct exposure.
⑤ Re-evaluate transport routes and forwarders
Tariff changes shift route economics. Compare total costs for Southeast Asia→Mexico→US versus Southeast Asia→US direct transport. A digital logistics platform like Cello Square enables real-time quote comparison to ground these decisions in data.

Outlook — Scenarios for Policy Revision and Key Variables

Current tariff policy faces inflation pressure and US industry pushback, leaving administrative and legal challenges on the table. Policy revisions or partial easing remain plausible — shippers should maintain flexible supply chain design.

Key variable	Timing	Potential impact
USMCA 6-year joint review	July 1, 2026	Renewal and terms potentially revised
Section 122 temporary tariff expiry	July 24, 2026	Renewal, termination, or restructuring uncertain
US midterm elections	November 2026	Tariff policy direction may shift
Section 232 15% relief expiry	2028	HV transformers, industrial machinery may face higher duties

Frequently Asked Questions

Q. Are USMCA-compliant products also exempt from Section 232 tariffs?: A. No. USMCA-compliant products are exempt from MFN duties and Section 122 tariffs, but Section 232 tariffs on steel, aluminum, and copper apply separately. That means even USMCA-compliant steel derivatives still bear the 25% (or 50%) Section 232 tariff.
Q. Why did Section 232 tariffs become heavier starting April 6, 2026?: A. Because the tariff basis shifted from “metal content value” to “total value.” If the metal content value exceeds 50% of the total value, the cost declines, while the content value under 50% face higher costs. For example, on a $1,000 product with $300 of metal content, the old calculation was $300 × 50% = $150; under the new structure, it’s $1,000 × 25% = $250. If metal content is valued at $700, the previous tariffs was $700 × 50% = $350, indicating that the tariff decreases from $350 to $250. Generally, electronic devices are under 50% of metal content value, seeing higher tariff pressure.
Q. IEEPA tariffs ended, so why are tariffs still being imposed?: A. The 25% IEEPA-based tariff ended with the February 20, 2026 Supreme Court ruling, but a temporary 10% global tariff under Trade Act Section 122 took effect on February 24, 2026. USMCA-compliant goods remain exempt from both.
Q. Has Mexico's production advantage completely disappeared?: A. No. Mexico's tariff advantage over Southeast Asia has narrowed, but USMCA-compliant goods remain MFN-exempt — preserving a relative edge. Mexico also retains its US logistics efficiency advantage (shorter lead times, overland transport availability). Tariff exposure should be recalculated by product to determine the optimal production location.
Q. How does Cello Square support response to tariff changes?: A. Cello Square is Samsung SDS's Digital Logistics Platform, supporting optimal route comparison and total cost-based decisions in response to tariff policy shifts. Built on a global network of 300+ sites across 36 countries, the platform enables real-time logistics quote comparisons across Mexico, Southeast Asia, Korea, and other major production bases — including transport mode reassessment based on HTSUS Code changes and integrated customs documentation support.

📎 References

U.S. Customs and Border Protection (CBP) — Section 232 Tariff Adjustments, April 2026
USTR (United States Trade Representative) — USMCA Joint Review Process
U.S. Supreme Court — IEEPA Tariff Ruling, February 20, 2026
Samsung SDS Logistics MI Group internal analysis (April 21, 2026)
C.H. Robinson, Reuters, Freight Waves — North America Freight Market Updates

Respond to Tariff Changes with Cello Square

Cello Square is Samsung SDS's Digital Logistics Platform, supporting supply chain redesign and total cost-based decisions in response to tariff policy shifts. Built on a global network of 300+ sites across 36 countries, the platform delivers real-time logistics quotes across production bases — including HS Code changes and customs response — all in one workflow.

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Market Intelligence USMCA and US Tariffs on Mexico:April 2026 Market Update — Logistics Impact Analysis