One Thing Explained: Where the money comes from, and why two taxes do most of the work

The full ranking, with the vintage stated

Every receipts figure in this explainer comes from one source: the Monthly Treasury Statement, Table 9, covering fiscal 2026 through August 31, 2026, the latest published month when this piece was prepared. Receipts by source were: individual income taxes $2,548 billion, employment and general retirement receipts (the payroll taxes that fund Social Security and part of Medicare) $1,607 billion, corporation income taxes $295 billion, customs duties $167 billion, excise taxes $93 billion, unemployment insurance $49 billion, miscellaneous receipts $43 billion, estate and gift taxes $36 billion, and other retirement receipts $8 billion. The total was $4,845 billion, or $4.85 trillion. Shares are calculated by The Daily Ledger and may not sum to 100 percent due to rounding.

The plain English version is short. Most federal revenue is withheld from paychecks. The individual income tax and the payroll tax are both collected largely through employer withholding, which is why the deposit side of the Daily Treasury Statement is dominated by withheld tax receipts on most business days.

Why the mix matters for reading the daily numbers

Because two sources supply about 86 percent of revenue, the government's cash position moves with the paycheck and tax calendar. On October 8, 2026, the Daily Treasury Statement recorded $301.4 billion in deposits in a single day, a settlement heavy date. A quieter day such as October 7 recorded $19.4 billion in deposits. Both days draw on the same two main sources. The difference is timing, not a change in the underlying tax mix.

The mix also sets the scale for every revenue debate. Customs duties, at $167 billion and 3.5 percent of receipts, are real money. They are also about one fifteenth the size of individual income tax receipts in the same period. A change in tariff collections moves the total by billions. A change in income or payroll tax receipts moves it by hundreds of billions. Reading any revenue proposal starts with that ranking.

For scale against the debt: total receipts of $4.85 trillion in fiscal 2026 through August compare with a national debt of $40.3 trillion on October 8, 2026. Receipts are a yearly flow. The debt is the accumulated stock from years of flows in which spending exceeded receipts.

Sources

1. U.S. Department of the Treasury, Fiscal Data, Monthly Treasury Statement dataset: https://fiscaldata.treasury.gov/datasets/monthly-treasury-statement/monthly-treasury-statement

2. U.S. Department of the Treasury, Fiscal Data, Daily Treasury Statement, Operating Cash Balance: https://fiscaldata.treasury.gov/datasets/daily-treasury-statement/operating-cash-balance

3. U.S. Department of the Treasury, Fiscal Data, Debt to the Penny dataset: https://fiscaldata.treasury.gov/datasets/debt-to-the-penny/debt-to-the-penny