U.S. Treasury — federal revenue-mix intelligence
Monthly intelligence on how the U.S. federal government funds itself, from the Treasury Monthly Treasury Statement table 4 (keyless FiscalData API). Each row is one month (trailing 10 years): trailing-12-month (TTM) net receipts per top-level revenue source (individual / corporate income taxes, social insurance & retirement, excise, estate & gift, customs duties, miscellaneous), each source's share of TTM receipts and its year-over-year share change in percentage points, a documented 0-100 revenue-concentration score (100*(HHI-1/7)/(1-1/7) over the seven TTM shares), the top funding source and its share, and TTM total-receipts YoY. Units: USD, percent, percentage points, scores. Caveats: cash-basis MTS receipts (refunds netted), not accrual revenue; TTM windows are rolling calendar 12-months, not fiscal years; amounts are nominal dollars; recent months are occasionally revised by Treasury. Primary key: (month). Cadence: monthly; as_of is the latest month in the panel, so identical input produces an identical content hash. U.S. federal government work (public domain) — commercial_use = yes, attribution required. Sample use: track customs_share_pct and customs_share_yoy_pp for the tariff-era shift in the federal funding mix.