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On October 15, 2026, the US Treasury reported in its Monthly Treasury Statement (and xlsx) for September that the federal deficit for FY 2025 ending September 30, 2026, was $1,99 billion. Here are the numbers, including total receipts, total outlays, and deficit compared with the numbers projected in the FY 2026 federal budget published in February 2025:

The Monthly Treasury Statement includes "Table 4: Receipts of the United States Government, September 2026 and Other Periods." This table of receipts by source is used for usgovernmentspending.com to post details of federal receipt actuals for FY 2025. usdgovernmentspending.com obtains the data for outlays and receipts from apis at fiscaldata.treasury.gov.

This MTS report on FY 2026 actuals is a problem for usgovernmentspending.com because this site uses Historical Table 3.2--Outlays by Function and Subfunction from the Budget of the United States as its basic source for federal subfunction outlays. But the Monthly Treasury Statement only includes "Table 9. Summary of Receipts by Source, and Outlays by Function of the U.S. Government, September 2025 and Other Periods". Subfunction amounts don't get reported until the FY28 budget in February 2027. Until then usgovernmentspending.com estimates actual outlays by "subfunction" for FY 2026 by factoring subfunction budgeted amounts for FY26 by the ratio between relevant actual and budgeted "function" amounts where actual outlays by subfunction cannot be gleaned from the Monthly Treasury Statement.