Quarterly Tax Calculator for Claude Code

io.github.al157/quarterlytax-mcp

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

client:Claude Code transport:streamable-http tools:2

Install Quarterly Tax Calculator in Claude Code

run in your project directory

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

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