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Quarterly Tax Calculator

Official registry Finance and payments

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

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http quarterly-tax-calculator 'https://mcp.quarterlytax.al157.xyz/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "quarterly-tax-calculator": {
            "type": "http",
            "url": "https://mcp.quarterlytax.al157.xyz/mcp"
        }
    }
}

Frequently asked questions

What is Quarterly Tax Calculator?

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

How do I install Quarterly Tax Calculator?

It runs as a remote server. In Claude Code: claude mcp add --transport http quarterly-tax-calculator 'https://mcp.quarterlytax.al157.xyz/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Quarterly Tax Calculator need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Quarterly Tax Calculator open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Quarterly Tax Calculator?

It is published by al157. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.