U.S. trade deficit edges down in September, but AI-driven import boom keeps gap near yearly high

The U.S. trade deficit narrowed slightly in September, slipping to $105.0 billion from a revised $105.7 billion the month before, even as imports of computer chips, servers and other equipment tied to the artificial-intelligence building boom kept the overall gap near its highest levels of the year, the Commerce Department's Bureau of Economic Analysis reported Wednesday. The August figure, originally reported as $105.6 billion, was revised up slightly in the new release.

Exports rose $5.8 billion, or 1.9 percent, to $321.5 billion, outpacing a $5.2 billion, or 1.2 percent, increase in imports to $426.6 billion. The goods deficit narrowed by $0.7 billion to $135.9 billion, while the surplus the United States runs in services held almost flat at $30.9 billion. Taken together, the figures produced the first month-over-month narrowing in the headline deficit since early summer.

A narrower month, but a wider trend

The monthly dip masks a steadier climb over the past several months. The three-month moving average of the deficit, a smoother gauge that strips out some volatility, rose $11.3 billion to $101.2 billion, the agency's report said. Year to date, the combined goods-and-services deficit remains $92.4 billion, or 12.2 percent, below the same nine months of 2025, when a rush of pre-tariff stockpiling pushed some monthly gaps above $130 billion — a reminder that comparisons across years are still distorted by that earlier import surge.

Economists at First Trust Advisors had flagged the underlying dynamic weeks earlier, when they noted that imports of computers, semiconductors and telecommunications equipment tied to the data-center and AI buildout were up $273 billion for the year through August — more than the entire $107 billion increase in total goods imports over the same stretch. In other words, the tech-hardware category alone accounted for more than all of the deficit's year-over-year growth, with other categories of imports essentially flat or falling.

Mexico remained the largest single source of the September gap, at $28.7 billion, followed by Vietnam at $25.3 billion, Taiwan at $21.9 billion and China at $17.9 billion. Taiwan's deficit has swelled fastest: First Trust's analysts put the year-to-date increase in imports from the island at 56.8 percent, reflecting record shipments of chips and servers from its electronics manufacturers. China, by contrast, has slipped to the fourth-largest source of U.S. imports this year, with shipments down 16.3 percent — a shift the firm cautioned may partly reflect Chinese-made goods being routed through other countries before reaching American ports rather than a genuine falloff in Chinese production.

• September trade deficit: $105.0 billion, down from a revised $105.7 billion in August
• Exports: $321.5 billion (up 1.9%); Imports: $426.6 billion (up 1.2%)
• Goods deficit: $135.9 billion; services surplus: $30.9 billion
• Largest September deficits by country: Mexico ($28.7B), Vietnam ($25.3B), Taiwan ($21.9B), China ($17.9B)

A drag on growth, three quarters running

The scale of the import boom became apparent weeks before Wednesday's full report, when the Census Bureau's advance estimate of September goods trade, published October 28, put that narrower figure at $134.9 billion — above the $130.2 billion that economists polled by Reuters had expected, and the widest goods gap since March 2025. Capital-goods imports alone jumped 7.5 percent for the month and were up 77.2 percent from a year earlier, according to the Reuters report on that data, syndicated the same day by other outlets carrying the wire story.

Trade has not contributed positively to U.S. economic growth for three consecutive quarters, as the widening goods gap continues to subtract from gross domestic product calculations even as exports grow. Pantheon Macroeconomics estimated the September trade figures alone could shave as much as four percentage points off annualized third-quarter growth, while Oxford Economics put the drag at 3.25 points. Those estimates came against a Reuters survey of economists that had penciled in third-quarter growth of 3.2 percent annualized, down from 2.2 percent in the second quarter; some of that hit could be softened if the imported goods show up as unsold business inventory rather than consumption, economists noted, pointing to a 0.6 percent rise in wholesale inventories and a 0.3 percent increase in retail inventories in the same period.

The swings carry real consequences for manufacturers, importers and logistics workers who depend on predictable trade flows. Port operators and freight carriers have had to absorb record volumes of capital equipment even as consumer-facing import categories grow more slowly, while domestic suppliers of servers, networking gear and chips face stiffer competition from the foreign equipment flooding in to supply the AI buildout.

Economists divided on what it means

Not every forecaster treats the widening goods gap as worrying. Some argue it reflects the economy's underlying strength rather than a weakness in domestic production.

"This is a sign of strength rather than weakness," said Daniel Vielhaber, an economist at Nationwide, attributing the import surge to continued business investment and resilient consumer spending rather than to any loss of competitiveness.

Stephen Stanley, chief economist at Santander US Capital Markets, offered a similar reading, telling Reuters that much of the computing hardware companies need for data centers and AI infrastructure simply is not made domestically, so stronger investment mechanically shows up as a wider trade gap rather than as weaker output. Separately, the First Trust economists concluded that, outside of China, they see little evidence this year's tariff regime has meaningfully reshaped global trade patterns — arguing that swings in the deficit have been driven far more by AI-related demand and by volatile commodities such as gold and oil than by tariff policy itself.

What comes next

The Census Bureau and BEA are scheduled to release October trade data on December 8, which will show whether September's modest narrowing was the start of a turn or just a pause in a longer climb. That report will land shortly before the government's first comprehensive look at third-quarter GDP, when economists will get a clearer read on how much the trade gap actually subtracted from growth. Federal Reserve officials, who weigh trade and inventory data alongside inflation and employment figures in setting interest-rate policy, are likely to parse the numbers for signs of whether AI-related capital spending is adding genuine economic momentum or simply inflating import bills that will eventually need to be unwound.