About Tax Tracker
A free, open dashboard that shows where U.S. federal tax dollars go, by purpose, agency, state and recipient.
Where the data comes from
Everything comes from USAspending.gov, the official source of federal spending data, run by the U.S. Department of the Treasury's Bureau of the Fiscal Service. It's public domain and has a free public API with no key. This app keeps a snapshot so it loads fast and works offline.
| Page | API endpoint |
|---|---|
| Budget functions, agencies, accounts | POST /api/v2/spending/ |
| Agency names | GET /api/v2/references/toptier_agencies/ |
| States | POST /api/v2/search/spending_by_geography/ |
| Recipients | POST /api/v2/search/spending_by_category/recipient/ |
How to read the numbers
- Budget functions and agencies show obligations: money the government has committed to spend, as reported by agencies.
- States and recipients show awards only (contracts, grants, loans, direct payments), counted where the work happens. Salaries and some other costs aren't included, so these totals are smaller.
- “Multiple recipients” groups payments to individuals for privacy.
- Fiscal years run October 1 to September 30. The newest year may be partial.
Snapshot: 2026-10-20 03:27 UTC. Years:
FY2026 (through 2026-08-31), FY2025 (through 2025-09-30).
To update, run python refresh.py.
JSON API
/api/summary, /api/functions, /api/agencies, /api/states,
/api/recipients, /api/search?q=nasa (add ?fy=2025 to any), /healthz.
Inspired by the hackathon idea Tax tracker. Not affiliated with or endorsed by the U.S. government.