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National debt$40.10T FY2026 deficit$1.97T Debt per resident≈$117K FY2026 receipts$4.85T FY2026 outlays$6.81T Figures as of Sep 28, 2026 · Sourced from U.S. Treasury data

Department Profile | How Government Works

Treasury: the department that pays the interest bill.

Treasury’s bureaus collect the revenue and move the money, but the real spending story is interest on the public debt: over $1 trillion a year, larger than the entire defense budget.

Interest on public debt, FYTD through July 2025
$1,013B
Monthly Treasury Statement; larger than defense
Total Treasury outlays, same period
$1,267B
Interest is about 80% of Treasury’s outlays
IRS appropriations, FY2025
≈$12.3B
Largest discretionary bureau at Treasury

The bureaus: what Treasury actually operates

Treasury’s bureaus include the Internal Revenue Service (tax collection), the Bureau of the Fiscal Service (which moves the government’s money and produces the Daily Treasury Statement), the Financial Crimes Enforcement Network (FinCEN), the Alcohol and Tobacco Tax and Trade Bureau, the U.S. Mint, the Bureau of Engraving and Printing (which prints the paper currency), the Office of the Comptroller of the Currency, the CDFI Fund, the Office of Financial Research, and the inspectors general.

The IRS dominates Treasury’s discretionary appropriations at about $12.3 billion for FY2025. Everything else the bureaus do is small next to the department’s real spending line.

The interest bill dwarfs everything else

Vintage: fiscal year to date through July 2025, Monthly Treasury Statement.

Treasury’s Monthly Treasury Statement data show interest on the public debt at $1,013 billion fiscal year to date through July 2025, inside total Treasury outlays of $1,267 billion for the same period. Interest alone is larger than the entire defense budget, and it is about 80 percent of everything Treasury pays out.

This is the mandatory side of Treasury: interest is owed under the terms of the securities the government has already sold. Congress does not vote on it each year. It rises and falls with the size of the debt and the interest rates set in the market, not with appropriations.

Who cashes the interest

Every interest dollar goes to whoever held a Treasury security on payday: bond mutual funds, banks, pension funds, foreign governments (about 30% goes abroad), households, and the Federal Reserve. The full trail, with the FY2025 cash figure of $609.2 billion in interest paid, is on our Follow the Money page.

Where to see the detail

Full bureau-by-bureau detail is in Treasury’s FY2025 Budget in Brief. The cash-out-the-door view of interest payments is in the Monthly Treasury Statement and the Daily Treasury Statement.

Sources

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