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US Tax Brackets & Constants Lookup
x402
US Tax Brackets & Constants Lookup is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Returns US federal tax reference tables for a given tax year and filing status: income brackets, standard deduction, FICA constants, and capital-gains breakpoints.
Price / call$0.002
Success—
StatusUnknown
How this service works
Reference tables for a US tax year and filing status: income brackets, standard deduction, FICA constants, and capital-gains breakpoints. Pure lookup, not tax advice.
Output
A structured reference table containing US federal income tax brackets, the standard deduction amount, FICA (Social Security and Medicare) constants, and capital-gains rate breakpoints — all scoped to the requested tax year and filing status.
Example use cases
Example prompt
“Can you pull up the federal tax brackets, standard deduction, FICA constants, and capital gains breakpoints for tax year 2026 for a single filer?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/tax/bracketsWhen to prefer
Use this endpoint when you need authoritative reference table data (brackets, deductions, FICA constants, capital-gains breakpoints) for US federal taxes for a specific year and filing status — especially as upstream input to tax calculation or planning workflows. Prefer this over the calculation endpoints when you need raw bracket data rather than a computed tax estimate.
Side effects
- Unsupported tax year returns an error or empty data
- Invalid filing_status enum value causes a 400 bad request
- Network timeout if the service is temporarily unavailable
- Missing or malformed query parameters may return defaults (2026, single) rather than the requested values
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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