Return the yearly self-employment tax bill for the USA (SE tax: Social Security, Medicare, additional Medicare, plus federal income tax), Türkiye (Bağ-Kur premium plus income tax), or KKTC (social security plus income tax after the personal allowance), with taxable income, quarterly payment, effective rate, and net income after tax. Tax years 2024 and 2025.
This page documents the MCP tool findutils:self_employment_tax_calculator. See the REST reference →
Call it over MCP
Tool name findutils:self_employment_tax_calculator
· no API keys · 120 requests/min per IP
Claude Code
claude mcp add findutils --transport http https://mcp.findutils.com/Claude Desktop — claude_desktop_config.json
{
"mcpServers": {
"findutils": {
"url": "https://mcp.findutils.com/"
}
}
}Raw JSON-RPC (any MCP client) — verified example
curl -X POST https://mcp.findutils.com/ \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "self_employment_tax_calculator",
"arguments": {
"country": "usa",
"tax_year": "2025",
"gross_income": 100000,
"business_expenses": 20000,
"filing_status": "single"
}
}
}'Input schema
| Argument | Type | Required | Description |
|---|---|---|---|
| country | string (usa | turkey | kktc) | no | Tax system: usa, turkey, or kktc. Default: turkey. |
| tax_year | string (2024 | 2025) | no | Tax year. Default: 2025. |
| gross_income | number | yes | Gross self-employment income for the year. |
| business_expenses | number | no | Deductible business expenses. Default: 0. |
| filing_status | string (single | married_joint | married_separate | head_of_household) | no | USA only. Default: single. |
| other_income | number | no | USA only: other taxable income (W-2, interest). Default: 0. |
| use_standard_deduction | boolean | no | USA only: use the standard deduction. Default: true. |
| itemized_deductions | number | no | USA only: itemized deductions when not using the standard one; the larger of the two is applied. Default: 0. |
| bagkur_tier | string (minimum | custom) | no | Türkiye only: minimum declared base, or custom. Default: minimum. |
| bagkur_has_discount | boolean | no | Türkiye only: 5-point discount for regular payers (29.5% instead of 34.5%). Default: true. |
| custom_bagkur_base | number | no | Türkiye only: monthly declared base when bagkur_tier is custom; clamped to the legal range. |
Example arguments (verified)
{
"country": "usa",
"tax_year": "2025",
"gross_income": 100000,
"business_expenses": 20000,
"filing_status": "single"
}Also a REST endpoint
The same tool answers plain HTTP at
POST /api/tools/self-employment-tax-calculator/execute — no key, 60 requests/min.
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