Tax MCP by AI2Fin — Source-Cited Tax Rates & Calculators

Created By

AI2Fin2 days ago

The tax brain your agent can call. Point Claude, ChatGPT, Cursor, or your own agent at one endpoint and it can look up real GST/VAT, income and company tax rates and run the maths for you. Every answer is source-cited to the national tax authority with a verified-as-of date, so you can see exactly where each number comes from. Free, public, no login, no API key, and nothing is stored. Where coverage is only partial, it says so plainly instead of guessing.

# tax

# vat

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Overview

Tax MCP by AI2Fin

The tax brain your agent can call. Point Claude, ChatGPT, Cursor, or your own agent at one endpoint and it can look up real tax rates and run the maths for you. Every answer is source-cited to the national tax authority with a verified-as-of date, so you can see exactly where each number comes from.

Endpoint: https://taxmcp.ai2fin.com

Free · public · no login, no key, stores nothing.

Why Tax MCP

Cited to the tax authority. Every figure traces back to the authority that set it (ATO, HMRC, DGFiP, BZSt, and more).
Verified-as-of date on every answer. You always know how current a rate is.
Says "partial" instead of guessing. Where coverage is incomplete, it tells you plainly rather than inventing a number.

Connect in 3 steps

Copy the endpoint — one URL: https://taxmcp.ai2fin.com. No install, no key to request.
Add the connector — in Claude: Settings → Connectors → Add custom connector, then paste it. The same idea works in ChatGPT, Cursor, or your own agent.
Just ask — ask any tax question in plain language; your assistant calls the right tool and hands back a sourced answer.

Six tools your agent can reach for

Tool	What it does	Coverage
`tax_rate_lookup`	A country's GST/VAT plus its top income and company rates, in one sourced call.	~50 countries
`compute_gst_vat`	Add or remove GST/VAT on any amount, with the breakdown shown.	Global
`compare_countries`	Put rates side by side across markets, each row carrying its own source.	Global
`income_tax_estimate`	Take-home pay including levies.	AU, NZ
`company_tax_estimate`	Company tax for entities.	AU, US, UK, CA, IN
`cgt_estimate`	Australian CGT, including the 50% discount where it applies.	AU
`student_loan_repayment`	Compulsory HELP/HECS study-loan repayment on the 2025-26 marginal system.	AU
`superannuation_estimate`	Super Guarantee, concessional cap, contributions tax and Division 293.	AU

Coverage

GST/VAT plus headline income and company rates for roughly 50 countries worldwide (AU, NZ, US, UK, CA, IN, DE, FR, SG, IE, and many more), with deeper calculators for the verified countries listed above.

Example exchanges

"What's my take-home on $90,000 in Australia?" → About $70,412 — $17,788 income tax plus a $1,800 Medicare levy (2025-26), cited to the ATO.
"Compare VAT in Germany, France and the UK." → Germany 19% (BZSt), France 20% (DGFiP), United Kingdom 20% (HMRC) — each rate cited to its own authority.

Two doors, one ocean

Public Tax MCP (this server): rates and calculators for everyone. No login, no key, nothing stored. Connect at https://taxmcp.ai2fin.com.
Your 2Fin account server: a separate, authenticated sibling for your own transactions and live tax position at https://api.ai2fin.com/mcp.

Give your agent a tax brain it can cite. Copy the endpoint, add the connector, and start asking.

Try in Playground

Server Config

{
  "mcpServers": {
    "tax-mcp": {
      "url": "https://taxmcp.ai2fin.com"
    }
  }
}

Project Info

Created At

2 days ago

Updated At

2 days ago

Author Name

AI2Fin

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