Quarterly Tax Calculator

io.github.al157/quarterlytax-mcpVersion 1.0.0

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

Status

Responds133 msNov 14, 2026, 14:44 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:44 UTC
Latency: 133 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://mcp.quarterlytax.al157.xyz/mcpResponds133 msNov 14, 2026, 14:44 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: quarterlytax-mcp
Remote MCP server URL: https://mcp.quarterlytax.al157.xyz/mcp

Cursor

{
  "mcpServers": {
    "quarterlytax-mcp": {
      "url": "https://mcp.quarterlytax.al157.xyz/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"quarterlytax-mcp","type":"http","url":"https://mcp.quarterlytax.al157.xyz/mcp"}'

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Tools

2 tools

Tools of Quarterly Tax Calculator
	Description		Read-only	Idempotent	Open world
`estimateQuarterlyTax`Estimate US federal + state quarterly estimated tax payments for a self-employed person. Given annual Schedule C net profit, filing status, two-letter US state code, tax year, and whether the §199A QBI deduction applies, returns annual federal income+SE tax, rough state income tax, SE tax, combined total, the per-quarter installment amount (4 equal payments), and a deep link that opens the site calculator pre-filled with these inputs. Read-only calculation; no data is stored.	Estimate US federal + state quarterly estimated tax payments for a self-employed person. Given annual Schedule C net profit, filing status, two-letter US state code, tax year, and whether the §199A QBI deduction applies, returns annual federal income+SE tax, rough state income tax, SE tax, combined total, the per-quarter installment amount (4 equal payments), and a deep link that opens the site calculator pre-filled with these inputs. Read-only calculation; no data is stored.	Not declared	Yes	Not declared	Not declared
`getPaymentCalendar`Return the 4 federal quarterly estimated tax payment due dates for a tax year (Apr/Jun/Sep 15 and Jan 15 of the following year, rolled forward past weekends and IRS holidays to the real deadline), plus a deep link to the site. Read-only.	Return the 4 federal quarterly estimated tax payment due dates for a tax year (Apr/Jun/Sep 15 and Jan 15 of the following year, rolled forward past weekends and IRS holidays to the real deadline), plus a deep link to the site. Read-only.	Not declared	Yes	Not declared	Not declared

Details

Registry status: Active
Published: Oct 15, 2026
Updated: Oct 15, 2026
Website: https://quarterlytax.al157.xyz/⁠ (opens in a new tab)
Repository: https://github.com/al157/quarterly-tax-calc⁠ (opens in a new tab)
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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