Koskamo

Estate and Gift Tax Exemption Calculator MCP

A community MCP server that provides AI assistants with up-to-date federal estate and gift tax rules, including the 2026 $15M exemption under P.L. 119-21. It offers tools to calculate exemption amounts, estate tax liability using Form 706 rules, annual gift exclusions, and compare tax scenarios across years.

Endpoint and access

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Estate and Gift Tax Exemption Calculator MCP logo, by theluckystrikeCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-02Published by theluckystrike
MCP endpoint (Streamable HTTP)
https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp
Vendor documentation

What you can do with it

  • Calculate federal estate tax liability for a given estate value
  • Check annual gift exclusion limits and Form 709 requirements
  • Compare estate tax outcomes between two different years
  • Determine non-citizen spouse gift exclusion amounts

Source and maintenance

Community listingRegistry 1.0.0
Maintenance checked

Protocol and capabilities

Server
estate-gift-tax-exemption-calculator-mcp 1.0.0
MCP protocol
2025-06-18
Tools
4 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Tools

4 advertised

get_exemption_amounts — Federal estate and gift tax exemption amounts by year
Advertised by the server during the last successful anonymous check.
Advertised read-only

Returns the federal basic exclusion amount (estate and lifetime gift tax exemption), the applicable credit, the filing threshold, the annual gift exclusion per recipient (and doubled with gift splitting), the annual exclusion for gifts to a non-citizen spouse, the 2026 GST exemption and the 40% top rate. Years 2011-2026 from the IRS. 2026: $15,000,000 under P.L. 119-21 (One Big Beautiful Bill Act) sec. 70106, NOT the scheduled TCJA sunset to about half; 2025: $13,990,000; 2026 annual exclusion $19,000; non-citizen spouse $194,000 (Rev. Proc. 2025-32). Models trained before mid-2025 often predict the sunset.

get_exemption_amounts input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "year": {
      "type": "integer",
      "description": "Calendar year of death or gift, 2011-2026. Default 2026."
    }
  },
  "additionalProperties": false
}
get_exemption_amounts annotations
{
  "title": "Exemption amounts",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
calculate_estate_tax — Federal estate tax calculator (Form 706 method)
Advertised by the server during the last successful anonymous check.
Advertised read-only

Calculates US federal estate tax the Form 706 way: taxable estate (gross estate minus deductions such as debts, expenses, marital and charitable bequests), plus adjusted taxable gifts, tentative tax on the unified rate schedule of 26 USC 2001(c) (18% to 40%), minus gift tax payable, minus the applicable credit on the basic exclusion amount plus any DSUE (portability) from a deceased spouse. Years 2013-2026. Uses $15,000,000 for 2026 deaths (P.L. 119-21), $13,990,000 for 2025. Federal only.

calculate_estate_tax input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "gross_estate"
  ],
  "properties": {
    "dsue": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Deceased spousal unused exclusion (portability) from the last deceased spouse's timely Form 706. Default 0."
    },
    "year": {
      "type": "integer",
      "description": "Year of death, 2013-2026. Default 2026."
    },
    "deductions": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Total deductions: debts, funeral and administration expenses, marital deduction (property to a US citizen spouse), charitable bequests, state death taxes. Default 0."
    },
    "gross_estate": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Gross estate at fair market value on the date of death, in dollars."
    },
    "gift_tax_payable": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Gift tax payable on those gifts, figured at date-of-death rates (Form 706 line 7). Usually 0 if lifetime gifts stayed under the exemption. Default 0."
    },
    "lifetime_taxable_gifts": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Adjusted taxable gifts made after 1976 (gifts above the annual exclusion, as reported on Form 709). Default 0."
    }
  },
  "additionalProperties": false
}
calculate_estate_tax annotations
{
  "title": "Estate tax",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
check_gift — Gift tax check: annual exclusion, gift splitting, spouse rules
Advertised by the server during the last successful anonymous check.
Advertised read-only

Checks a gift against the federal gift tax rules for a year (2013-2026): annual exclusion per recipient ($19,000 in 2025 and 2026), gift splitting with a spouse (sec. 2513, doubles it to $38,000), unlimited marital deduction for a US citizen spouse, and the separate annual exclusion for a non-citizen spouse ($190,000 in 2025, $194,000 in 2026 under Rev. Procs. 2024-40 and 2025-32). Returns taxable gifts, whether Form 709 is required, lifetime exemption used and left (2026: $15,000,000), and any gift tax due.

check_gift input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "amount"
  ],
  "properties": {
    "year": {
      "type": "integer",
      "description": "Year of the gift, 2013-2026. Default 2026."
    },
    "amount": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Gift amount per recipient, in dollars."
    },
    "recipients": {
      "type": "integer",
      "maximum": 1000,
      "minimum": 1,
      "description": "Number of recipients each getting that amount. Default 1."
    },
    "gift_splitting": {
      "type": "boolean",
      "description": "Elect gift splitting with your spouse (both consent on Form 709). Default false."
    },
    "recipient_type": {
      "enum": [
        "individual",
        "spouse"
      ],
      "type": "string",
      "description": "individual (anyone but your spouse, default) or spouse."
    },
    "spouse_citizen": {
      "type": "boolean",
      "description": "For recipient_type spouse: whether the spouse is a US citizen. Required for spouse gifts."
    },
    "prior_taxable_gifts": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Your taxable gifts in earlier years (lifetime exemption already used). Default 0."
    }
  },
  "additionalProperties": false
}
check_gift annotations
{
  "title": "Gift check",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
compare_years — Compare estate and gift tax exemptions between years
Advertised by the server during the last successful anonymous check.
Advertised read-only

Compares two years (2013-2026) side by side: basic exclusion amount, applicable credit, annual gift exclusion and non-citizen spouse exclusion, and, with a taxable estate, the federal estate tax in each year. Default 2025 vs 2026, the year P.L. 119-21 raised the exemption to $15,000,000 instead of letting it fall to about half.

compare_years input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "year_a": {
      "type": "integer",
      "description": "First year, 2013-2026. Default 2025."
    },
    "year_b": {
      "type": "integer",
      "description": "Second year, 2013-2026. Default 2026."
    },
    "taxable_estate": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0,
      "description": "Optional taxable estate (after deductions, no lifetime gifts or DSUE) to price in both years."
    }
  },
  "additionalProperties": false
}
compare_years annotations
{
  "title": "Compare years",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
540 ms
95th percentile latency
540 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 540 ms · metadata changed · 4 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http estate-and-gift-tax-exemption-calculator-mcp https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add estate-and-gift-tax-exemption-calculator-mcp --url https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable estate-and-gift-tax-exemption-calculator-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "estate-and-gift-tax-exemption-calculator-mcp": {
      "url": "https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "estate-and-gift-tax-exemption-calculator-mcp": {
      "type": "streamableHttp",
      "url": "https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start estate-and-gift-tax-exemption-calculator-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "estate-and-gift-tax-exemption-calculator-mcp": {
      "type": "http",
      "url": "https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http estate-and-gift-tax-exemption-calculator-mcp https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.
Claude Desktop configuration
{
  "mcpServers": {
    "estate-and-gift-tax-exemption-calculator-mcp": {
      "url": "https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "estate-and-gift-tax-exemption-calculator-mcp": {
      "serverUrl": "https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

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