Quarterly Tax Calculator for Claude.ai

io.github.al157/quarterlytax-mcp

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

client:Claude.ai transport:streamable-http tools:2

Install Quarterly Tax Calculator in Claude.ai

Settings → Connectors → Add custom connector

https://mcp.quarterlytax.al157.xyz/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

estimateQuarterlyTax
getPaymentCalendar

Quarterly Tax Calculator in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Quarterly Tax Calculator MCP server