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US Payroll & Self-Employment FICA Tax Estimator
x402
US Payroll & Self-Employment FICA Tax Estimator is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Computes US FICA taxes (Social Security, Medicare, and additional Medicare surtax) for either employee wages or self-employment income for a given tax year and filing status.
Price / call$0.003
Success—
StatusUnknown
How this service works
US payroll tax estimate: Social Security and Medicare on wages, or self-employment tax, including the additional Medicare surtax. Pure computation over your inputs, not tax advice.
Output
A breakdown of Social Security tax, Medicare tax, any additional Medicare surtax (0.9% surtax on wages above the threshold), and total FICA or self-employment tax owed, computed from the inputs provided.
Example use cases
Example prompt
“What's my total FICA tax bill for 2026 on $135,000 of self-employment net earnings, filing as single?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/tax/ficaWhen to prefer
Use this endpoint when you need a fast, pure-computation FICA/payroll tax estimate for a single set of inputs — either for an employee (Social Security + Medicare withholding) or a self-employed person (full SE tax). Prefer it over a generic tax API when you specifically need FICA breakdown including the additional 0.9% Medicare surtax. Not suitable for income tax, capital gains tax, or full tax return computations.
Side effects
- Missing required 'wages' parameter returns a 400 validation error
- Negative wages value rejected with validation error
- Invalid filing_status enum value returns a 422 error
- Unsupported tax year may return an error or fall back to a default
- Non-numeric wages value triggers a type validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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