usarefCountries › United States

United States government reference data

13 series, each cited to the official source it was verified against. Currency USD.

SeriesCurrentIn force fromOfficial sourceLast verified
Federal funds target range (upper bound) 3.75 percent (upper bound of 3.50-3.75% target range) 2026-06-18 Federal Open Market Committee, FOMC statement of June 17, 2026… 2026-08-21
Value added tax no single figure 1789-03-04 Absence of federal statute: no provision of the Internal Revenue Code… 2026-07-20
VAT registration threshold no single figure South Dakota v. Wayfair, Inc., 585 U.S. ___ (2018), No. 17-494… 2026-08-10
State general sales tax rate no single figure 1789-03-04 Absence of federal statute: no provision of the Internal Revenue Code… 2026-08-04
Federal minimum wage (FLSA) 7.25 USD/hour 2009-07-24 Fair Labor Standards Act of 1938, section 6(a)(1)(C), codified at 29… 2026-07-20
Federal public holidays 2026 (free) 22 days held 2026-01-01 5 U.S.C. 6103(a) (legal public holidays) and 5 U.S.C. 6103(b) plus… 2026-07-30
Consumer Price Index (CPI-U), 12-month change 3.5 percent (YoY, CPI-U all items, NSA) 2026-06-01 U.S. Bureau of Labor Statistics, 'Consumer Price Index - June 2026'… 2026-09-12
Federal corporate income tax rate 21 percent 2018-01-01 Internal Revenue Code section 11(b), 26 U.S.C. 11(b), as amended by… 2026-07-20
Withholding tax rates 30% across 4 withholding taxes — no single rate 1966-11-13 Internal Revenue Code (26 U.S.C.), sections 871(a), 881(a), 1441 and… 2026-08-10
Federal post-judgment interest rate (28 U.S.C. § 1961) 4.15 percent 2026-09-04 H.15 weekly average 1-year CMT. Not daily EFFR. Prior fleet 4.08 week… 2026-09-11
Federal individual income tax brackets (single filer, tax year 2026) 10–37% across 7 bands 2026-01-01 Rev. Proc. 2025-32, section 4.01, Table 3 (Section 1(c) - Unmarried… 2026-07-20
Statutory social-insurance contributions 0–12.4% across 7 contribution branches 2026-01-01 26 U.S.C. §3101(a),(b)(1),(b)(2) (employee FICA); 26 U.S.C… 2026-08-08
Federal Reserve H.10 foreign exchange reference rates 22 reference rates held 2026-09-04 Board of Governors of the Federal Reserve System — H.10 Foreign… 2026-09-13

Use it from code

# Free — the full catalogue of what we hold
curl https://usaref.dev/catalog

# Any series ($0.005 per call, x402 on Base — no key, no signup)
curl https://usaref.dev/v1/us/policy-rate

# Provenance: the fingerprint of every source cited above
curl https://usaref.dev/provenance/us/policy-rate

What makes this different

Every value above names the official instrument it came from and the date it takes effect, and we record when we last checked it. Where a value could not be verified against its own statute we do not publish an estimate — the series is simply absent. Where a question falls outside what we hold, the API refuses and explains, free of charge, rather than returning a number that looks right.