Quarterly Tax Calculator
US federal + state quarterly estimated tax estimates, SE tax, and quarterly payment due dates.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
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Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"quarterlytax-mcp": {
"url": "https://mcp.quarterlytax.al157.xyz/mcp"
}
}
}Remote endpoints
https://mcp.quarterlytax.al157.xyz/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢estimateQuarterlyTax(netProfit, filingStatus, state, taxYear, includeQBI)
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.
Input Schema
{
"type": "object",
"properties": {
"netProfit": {
"type": "number",
"minimum": 0,
"description": "Annual self-employment net profit in USD."
},
"filingStatus": {
"type": "string",
"enum": [
"single",
"mfj",
"hoh"
],
"description": "Federal filing status: single, mfj (married filing jointly), hoh (head of household)."
},
"state": {
"type": "string",
"pattern": "^[A-Za-z]{2}$",
"description": "Two-letter US state code, e.g. \"CA\"."
},
"taxYear": {
"type": "integer",
"enum": [
2025,
2026
],
"description": "Tax year for the federal rules applied."
},
"includeQBI": {
"type": "boolean",
"description": "Whether the §199A qualified business income deduction applies (default true)."
}
},
"required": [
"netProfit",
"filingStatus",
"state",
"taxYear"
]
}🟢getPaymentCalendar(taxYear)
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.
Input Schema
{
"type": "object",
"properties": {
"taxYear": {
"type": "integer",
"enum": [
2025,
2026
],
"description": "Tax year whose installment deadlines to return."
}
},
"required": [
"taxYear"
]
}Community
Evidence