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FuelTax IFTA Rates API – Quarterly Rate Lookup
x402
FuelTax IFTA Rates API – Quarterly Rate Lookup is a paid API for AI agents from api.freestylevault.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Returns committed IFTA fuel tax rates for a given quarter, jurisdiction, and fuel type, with mid-quarter revisions exposed as separate effective periods.
Price / call$0.005
Success—
StatusUnknown
How this service works
IFTA quarterly tax rate matrix (iftach.org), human-reviewed import each quarter. Reference data. Verify against the official IFTA matrix before filing. Paid endpoints use the x402 payment protocol (base, USDC): expect HTTP 402 with PAYMENT-REQUIRED, retry with PAYMENT-SIGNATURE.
Output
A structured response listing IFTA tax rate entries for the specified quarter, jurisdiction, and fuel type. Each entry includes the effective period (clipped to the quarter), the tax rate, jurisdiction code, and fuel type. Mid-quarter rate revisions appear as separate period entries, enabling precise pro-rated tax calculations.
Example use cases
IFTA quarterly tax filing prep
“I'm preparing our IFTA return for Q2 2026 — can you pull the diesel tax rates for all our operating states, starting with Washington and Oregon?”
Mid-quarter rate revision check
“Did the IFTA diesel rate change mid-quarter in California for Q1 2026? If so, show me the separate effective periods and their rates.”
Fleet compliance rate validation
“We need to verify the IFTA diesel rate for Texas in Q3 2025 to make sure our fuel tax calculations are correct — can you fetch the committed rate for that quarter?”
Technical details
Endpoint
GEThttps://api.freestylevault.com/v1/ratesWhen to prefer
Choose this endpoint when you need authoritative, human-reviewed IFTA quarterly tax rates keyed by jurisdiction and fuel type, especially when mid-quarter revisions matter for accurate pro-rated IFTA reporting. It is specifically useful for fleet operators, trucking compliance tools, and tax software that must produce correct IFTA filings. Prefer this over scraped or unverified sources when auditability and quarterly accuracy against iftach.org are required.
Side effects
- Unknown or unsupported jurisdiction code returns an empty result or 404
- Invalid quarter format (not YYYY-QN) causes a validation error
- Unsupported fuel type returns no results or an error
- Quarter not yet imported (future quarter) returns no data
- Rate data not yet human-reviewed for the specified quarter may be unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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