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US Federal Income Tax Estimator
x402
US Federal Income Tax Estimator is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes US federal income tax for a given tax year, returning taxable income, total tax, marginal and effective rates, per-bracket breakdown, and an optional state-level estimate.
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 per-bracket breakdown showing income and tax in each bracket, and optionally a state-level tax estimate — all as structured numeric data.
Example use cases
Freelancer annual tax planning
“I'm a freelancer who made $95,000 this year filing as single with no itemized deductions — estimate my federal income tax for 2025 and show me the bracket breakdown so I know how much to set aside.”
Married couple joint filing estimate
“My spouse and I are filing jointly for 2025 with a combined gross income of $210,000 and $32,000 in itemized deductions — what will our total federal tax be, and what's our effective rate?”
Cross-state salary comparison
“I'm comparing two job offers: one in Texas and one in New York. For a $150,000 salary filing single in 2025, can you estimate my federal plus state income tax for New York so I can compare take-home pay?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/tax/incomeWhen to prefer
Choose this endpoint when you need a fast, pure-computation federal income tax estimate with per-bracket detail and optional state tax — ideal for financial planning agents, tax withholding calculators, salary negotiation tools, or any scenario where you need structured numeric tax output without filing or advisory services.
Side effects
- Missing required gross_income parameter returns a 400-level error
- Invalid or unrecognized state code may return an error or omit the state estimate
- Negative gross_income value rejected as invalid
- Unsupported filing_status enum value causes a validation error
- Non-integer tax_year or out-of-range year may return an error or default to 2026
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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