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US Federal Income Tax Estimator
x402
US Federal Income Tax Estimator is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Estimates US federal (and optionally state) income tax for a given year, returning taxable income, total tax, marginal and effective rates, and a per-bracket breakdown.
Price / call$0.005
Success—
StatusUnknown
How this service works
US federal income tax estimate for a tax year: taxable income, tax, marginal and effective rate, per-bracket breakdown, with an optional state estimate. Pure computation over your inputs, not tax advice.
Output
Returns taxable income after deductions, total federal tax owed, marginal and effective tax rates, a line-by-line breakdown of tax owed per bracket, and optionally a state-level tax estimate for the specified state.
Example use cases
Example prompt
“What's my estimated federal income tax for 2025 if I made $120,000 as a single filer — and can you also include a California state estimate?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/tax/incomeWhen to prefer
Use this endpoint when you need a fast, pure-computation estimate of US federal income tax liability with bracket-level detail and an optional state estimate, without needing to file or submit anything. Prefer this over generic tax software APIs when you want a lightweight, per-call calculation suitable for embedding in financial planning workflows or chatbot responses.
Side effects
- Missing required gross_income parameter returns a 400 error
- Invalid filing_status enum value returns a 400 validation error
- Invalid or unrecognized state code may return an error or omit state estimate
- Negative gross_income value rejected with 400 error
- Unsupported tax_year may return a 400 or fall back to default
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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