Quarterly Tax Calculator MCP Server

by al157 Your server? Claim it

answering

Quarterly Tax Calculator is answering right now. Last checked 3 min ago. It exposes 2 tools.

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

Uptime history 21 hours of history

21 hours agonow

100.0%

Uptime 24h

78 of 78 checks

Tools

read from the server

91 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Quarterly Tax Calculator every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.quarterlytax-mcp]
url = "https://mcp.quarterlytax.al157.xyz/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

estimatequarterlytax

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.

getpaymentcalendar

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.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.quarterlytax.al157.xyz/mcp	streamable-http	answering	104 ms	3 min ago

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Quarterly Tax Calculator — questions

Answers built from our own checks of this server.

What can Quarterly Tax Calculator do?

It exposes 2 tools, read directly from the server on our last check. Among them: estimateQuarterlyTax, getPaymentCalendar. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Quarterly Tax Calculator working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 78 of 78 checks got a reply (100.0%), average response time 91 ms. The bar chart above shows every period we have measured.

How do I connect Quarterly Tax Calculator?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Quarterly Tax Calculator need an API key?

No. Quarterly Tax Calculator completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Quarterly Tax Calculator?

It answers our handshake in 91 ms on average, which is faster than 86% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.