CBO Puts the Federal Deficit at $2.0 Trillion Through Eleven Months

The federal budget deficit totalled $2.0 trillion in the first 11 months of fiscal year 2026, the Congressional Budget Office estimates, an amount $6 billion less than the deficit recorded in the same period of the previous fiscal year¹. The United States borrowed $2.0 trillion over those eleven months². The monthly budget update was released on Wednesday⁵.

The near-flat comparison is a timing artefact. Absent shifts in the calendar of certain payments, the deficit for the year would have been $82 billion larger than last year rather than marginally smaller³. On the same basis, August’s deficit alone would have been $10 billion larger than August 2025⁴. The period covered runs from October 2025 through August 2026³.

Why it matters to investors

The full-year picture is worse than the eleven-month print suggests. The budget office estimates the fiscal 2026 deficit at about $2.1 trillion, which is $200 billion higher than its own February projection⁶. A projection that moves by that much inside a single fiscal year is a supply forecast that Treasury desks have to keep revising.

The carrying cost is now a headline item in its own right. The Treasury is paying out about $95 billion a month in interest to cover the deficits⁵. Tariffs are bringing in billions but are not close to solving the gap, according to the same analysis of the budget office numbers⁶.

What to watch

The first marker is the September close, which turns the eleven-month figure into the full fiscal year and tests the roughly $2.1 trillion estimate^1,6. The second is whether the timing shifts that flattered this comparison reverse, since stripping them out already leaves the year running $82 billion behind the prior one^3,4.

The third is the interest line, because it compounds independently of policy choices made this year: at about $95 billion a month it is a claim on receipts before any program is funded⁵. Against that arithmetic sits the political direction of travel, with the administration pitching large new payments to voters at the same time the update landed⁵. For investors the practical consequence is issuance: a deficit of this size, revised up by $200 billion inside the year, sets how much paper the market has to absorb^2,6. The eleven-month total is the borrowing that has already happened, not a forecast of it^1,2.