Mexico Tops US Trade Surplus Rankings in July

Mexico posted a US$26.31 billion goods trade surplus with the United States in July 2026, the largest among all US trading partners, as exports rose 33.6% year-over-year to US$60.55 billion. The result reinforces Mexico's position as the top supplier and destination market for US trade even as the USMCA enters a decade of annual reviews and Section 232 tariffs continue to weigh on steel, aluminum, copper, automotive and pharmaceutical exports. Automotive manufacturers, steel and aluminum producers, and auto-parts suppliers face the most direct exposure as the fourth round of USMCA review talks convenes in Washington in September 2026.

Mexico closed July 2026 as the country with the largest goods trade surplus with the United States, posting US$26.31 billion, according to figures released by the US Census Bureau. The result rested on exports of US$60.55 billion, up 33.6% year-over-year, against purchases from the United States of US$34.24 billion, an 18.3% increase. Beyond topping the surplus rankings, Mexico also held its position as the top foreign supplier of goods to the United States and the leading destination for US exports, a combination no other American trading partner matched during the month.

The backdrop to that figure is more complicated than in prior years. The USMCA reached its mandatory review date on July 1, 2026, and rather than granting an automatic 16-year extension, the United States declined to confirm the treaty's full continuation, pushing the three partners into a cycle of annual reviews running through 2036. That mechanism, examined by Mexico Business News, is intended to bring greater predictability after years of brinkmanship and repeated threats to unwind the agreement, though agencies such as Fitch Ratings have already warned that a prolonged review cycle could keep clouding long-term investment decisions in the country.

That process is far from over. The fourth round of USMCA review talks will take place in September in Washington, after the third round failed to resolve two central sticking points: automotive rules of origin, where Washington is demanding up to 50% US-specific content in vehicles, and the removal of Section 232 tariffs on steel, aluminum and automotive goods, which Mexico wants addressed before moving forward on other issues.

Despite that tariff environment, July confirmed that Mexico kept gaining ground against other US suppliers. Total US goods imports rose 14.0% year-over-year, to US$332.92 billion, while purchases from Mexico specifically grew even faster. The next-largest surpluses for the month belonged to Vietnam (US$24.83 billion), Taiwan (US$20.67 billion) and China (US$17.36 billion), but none came close to Mexico's export volume: Chinese sales to the US market totaled just US$9.71 billion for the month, Taiwan's reached US$5.0 billion and Vietnam's only US$1.59 billion, far below Mexico's US$60.55 billion.

That export strength is not confined to July. Mexican exports to the United States totaled US$298.2 billion in the 1H26, a 13% increase from the same period in 2025, while imports from the United States grew 16.6% to US$195.6 billion, leaving a cumulative first-half surplus of US$102.6 billion. The automotive sector, despite tariff pressure, managed to post modest 1% growth over that period, helped in large part by integrated auto-parts supply chains: that subsector alone reported a US$9.9 billion surplus in the 1Q25, with the United States absorbing 87.3% of Mexican auto-parts exports, according to industry figures cited by the outlet.

Mexico's broader export standing has held up even as global trade patterns shift. The country remained among the world's 10 largest merchandise exporters in 2025, according to World Trade Organization figures, even as geopolitical fragmentation reshaped global flows more broadly. Domestically, INEGI data show non-oil exports accounted for the overwhelming majority of Mexico's shipments abroad through the first four months of the year, with more than 80% of that total destined for the US market alone, underscoring how tightly Mexican manufacturing remains woven into US supply chains regardless of the tariff disputes still on the table.

Not every part of Mexico's 2026 trade balance has been favorable. Section 232 tariffs applied to light vehicles, steel and aluminum, copper, and pharmaceuticals slowed the pace of those specific export categories during the year, a reminder that the aggregate surplus coexists with losses in strategically important industries.

For the first seven months of the year combined, Mexico held onto its position as the top US trading partner, accounting for 16.7% of total bilateral trade, ahead of Canada (12.5%), China (6.3%), Taiwan (5.6%) and Vietnam (4.6%). Total bilateral trade for full-year 2025 had closed at US$871.6 billion, up 4.1% from 2024.

The underlying political debate is not new. Since his first presidential campaign, Donald Trump has pointed to US trade deficits with Mexico and Canada as evidence of an agreement unfavorable to American interests. Congressional Research Service analysis, however, attributes most of the US trade deficit to domestic macroeconomic factors, chiefly an insufficient national savings rate relative to investment needs across households, businesses and government, rather than to trading partners' practices.

With the September round of talks ahead and sectoral tariffs still in place, the challenge for Mexico will be sustaining this trade leadership while negotiating relief for steel, aluminum, copper, auto parts and pharmaceuticals, the sectors where the cost of the USMCA review has been felt most acutely.