How do I calculate employee withholdings?

Use the `calculate_employee_withholdings` tool by providing the annual gross pay in USD.

Does this include state-specific taxes?

Yes. By using `calculate_employer_liabilities` with a valid two-letter US state code, the tool calculates SUTA based on predefined state rates.

Can I see a summary of total costs?

Yes, the `get_payroll_summary` tool provides a comparison between net employee pay and the total employer cost.

US Payroll Tax Calculator MCP Connector for Claude

A+

Calculate precise US payroll tax liabilities, including FICA, Medicare, FUTA, and SUTA.

3 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server provides tools to calculate various United States payroll tax obligations. Use calculate_employee_withholdings to determine employee-side deductions like Social Security and Medicare. Use calculate_employer_liabilities to find employer costs including FUTA and state-specific SUTA based on the provided state code. Finally, use get_payroll_summary for a high-level comparison of net pay versus total company cost.

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Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_jRP5obL7PZvPMIwuSkjbA60cWZ3UYbR672C1vFLg/mcp

② Claude Code (terminal)

claude mcp add --transport http us-payroll-tax-calculator https://edge.vinkius.com/vk_preview_jRP5obL7PZvPMIwuSkjbA60cWZ3UYbR672C1vFLg/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "us-payroll-tax-calculator": {
      "url": "https://edge.vinkius.com/vk_preview_jRP5obL7PZvPMIwuSkjbA60cWZ3UYbR672C1vFLg/mcp"
    }
  }
}

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