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402utils US Sales Tax State-Level Base Rates
x402
402utils US Sales Tax State-Level Base Rates is a paid API for AI agents from 402utils.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Returns statutory state-only sales tax base rates for US states and DC, including mandatory statewide local add-ons and their combined effective minimum rate
Price / call$0.002
Success—
StatusUnknown
How this service works
US sales tax STATE-LEVEL base rates for the 50 states + DC, as statutory percent. ?state=CA for one state, omit for all. Returns the state-only rate, any mandatory statewide local add-on (CA/UT/VA) and their sum. STATE BASE RATE ONLY — optional city/county/district rates are EXCLUDED and can add several points; not tax advice. Compiled from state statutes, cross-checked against two dated published trackers (asOf field included).
Output
Returns a JSON object with: stateRate (state-only statutory percent), mandatoryLocalAddon (statewide local add-on percent, e.g. 1.25 for CA and UT), effectiveMinimumRate (sum of the two), state name, optional note, asOf date (when data was compiled), and sources array. When querying all states, returns a map of USPS codes to per-state objects. Always includes a disclaimer noting that optional city/county/district rates are excluded.
Example use cases
Example prompt
“What's the statutory state-level sales tax base rate for California, including any mandatory statewide local add-ons and the effective combined minimum rate?”
Technical details
Endpoint
GEThttps://402utils.com/v1/us-tax-ratesWhen to prefer
Use this endpoint when you need quick, programmatic access to US state-level statutory sales tax base rates with mandatory statewide local add-ons. Prefer this over generic tax APIs when you need the statutory rate only (not estimated total rates including local jurisdictions), need all 51 jurisdictions at once, or need a transparent asOf date and source citations. Not suitable when you need city/county/district-level rates or a full tax calculation for a specific address.
Side effects
- Invalid or unrecognized state code returns an error or empty result
- Network timeout or service unavailability
- Payment failure via x402 protocol prevents access
- Stale data if state legislature changes rates after asOf date
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"asOf": "2026-07-01",
"name": "California",
"note": "1.25% mandatory statewide county rate → 7.25% floor everywhere",
"state": "CA",
"sources": [
"Compiled from state statutes; cross-checked against Sales Tax Institute (as of 2026-07-01)",
"Tax Foundation, State and Local Sales Tax Rates 2026 (as of 2026-01-01)"
],
"stateRate": 6,
"disclaimer": "State base rate only. Local (city/county/special-district) rates are excluded and can add several percentage points. Not tax advice.",
"mandatoryLocalAddon": 1.25,
"effectiveMinimumRate": 7.25
}
}Tags
x402
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