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mcp/harbor
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Quarterly Tax Calculator MCP

v1.0.0

io.github.al157/quarterlytax-mcp

US federal + state quarterly estimated tax estimates, SE tax, and quarterly payment due dates.

transport:streamable-http tools:2
View source Website

Target client

run in your project directory 

claude mcp add --transport http quarterlytax-mcp https://mcp.quarterlytax.al157.xyz/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

estimateQuarterlyTax

estimate quarterly tax

getPaymentCalendar

get payment calendar

All 2 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.