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FICA & Self-Employment Tax Estimator
x402
FICA & Self-Employment Tax Estimator is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Computes US FICA payroll taxes (Social Security, Medicare) and self-employment tax on wages or net self-employment earnings, including the 0.9% additional Medicare surtax.
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
Returns a breakdown of US FICA taxes owed: Social Security tax, Medicare tax, and (if applicable) the 0.9% additional Medicare surtax, plus a total — computed from the wages or net self-employment earnings provided, adjusted for the requested tax year and filing status.
Example use cases
Freelancer annual tax planning
“I earned $85,000 in net self-employment income this year. Can you calculate my self-employment tax for 2026 as a single filer so I know how much to set aside?”
W-2 employee FICA estimate
“My annual salary is $160,000 and I'm a regular W-2 employee filing married jointly for 2026 — what will I owe in Social Security and Medicare taxes?”
High earner Medicare surtax check
“I'm earning $250,000 in wages for 2026, filing as single. Can you estimate my total FICA taxes including whether I'll hit the additional Medicare surtax?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/tax/ficaWhen to prefer
Use this endpoint when you need a fast, pure-computation FICA or self-employment tax estimate without involving a full tax-filing service or advisor. Ideal for payroll tooling, personal finance agents, freelancer income planning, or any workflow that needs a quick numeric breakdown of Social Security and Medicare tax obligations from wages or self-employment earnings.
Side effects
- Missing required 'wages' parameter returns a validation error
- Negative wage value rejected with a validation error (wages must be >= 0)
- Invalid filing_status enum value returns a bad request error
- Invalid or unsupported tax_year may return an error or fall back to default
- Non-numeric wages value causes a schema validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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