US deficit jumps 42% to $404bn in October as tariff revenue slides

The US budget deficit hit $404 billion in October, up 42% year on year, and tariff revenue fell roughly 39% to $19.2 billion, Treasury Department data showed Nov. 12. The fiscal year's opening month delivered a double punch: Washington spent more and collected less, and the tariff line moved in the wrong direction for a White House that has leaned on duties as a revenue engine.

Here's the mechanism. October is month one of the fiscal year that began Oct. 1. Spending rose 12% to $773 billion, while tax receipts fell 9% to $369 billion. That $404 billion gap compares with a much smaller shortfall in the same month a year earlier, according to Treasury's figures.

Where the money went

Three categories drove the outlay increase: the military, healthcare, and interest on the debt. Rising interest rates have sent government debt costs soaring, a squeeze that compounds every month the federal balance sheet stays stretched.

On the revenue side, the story is refunds. Bigger tariff and corporate tax refunds compared with October 2025 weighed on collections. One detail matters for trade watchers: tariff refunds have slowed since the summer. That suggests the refund wave — which blunts the tariff take as importers contest duties and adjust sourcing — is easing, but not before it carved a deep notch in October's numbers.

What does this change for shippers and forwarders?

Practically, not the lanes or the rates themselves — this is a fiscal report, not a freight one. But it changes the policy weather around tariffs. When tariff revenue drops 39% in a single month while the deficit widens, the political temptation is to defend or expand the duty base rather than relax it. Importers planning 2026 sourcing should read the $19.2 billion figure alongside the broader deficit trend: a revenue-hungry Treasury has less room to grant relief.

For carriers and BCOs, the refund slowdown since summer cuts both ways. Fewer refunds mean the effective duty burden on cleared cargo is settling closer to the sticker rate. Cash-flow planning for importers — who often post duties first and contest later — gets marginally more predictable, if not cheaper.

The bigger fiscal picture

Treasury now estimates the budget gap will increase slightly this year to roughly $2.2 trillion. The government just closed its latest fiscal year with a $1.99 trillion shortfall, as spending far outpaced federal tax collection. Deficits that size equal roughly 6% of gross domestic product — a level that keeps borrowing costs, and therefore debt service, on an upward path.

The arithmetic is unforgiving. Interest costs push outlays up. Refunds push receipts down. Neither moves quickly, which is why a 42% single-month widening matters beyond one month: it sets the trajectory Treasury now expects to hold through the year at around $2.2 trillion.

If tariff refunds keep slowing and collections stabilize, the October drop may prove a trough. If they don't, expect the deficit math — and the pressure to keep duties high — to shape trade policy well into the new fiscal year.