Connect your assistant to live tax rates
A free Model Context Protocol server your assistant calls directly — source-cited GST/VAT for 193 countries, income tax for 57, company tax for 139 and capital gains for 71. No login, no API key.
MCP endpoint
https://taxmcp.ai2fin.comPaste into Claude or ChatGPT → Settings → Connectors. Connected in under a minute.
You ask
“What’s the GST on $4,400 in Australia?”
GST is $400 — the price before GST is $4,000, total $4,400.
You ask
“What’s my take-home on €50,000 in Tampere, and what’s my tax card?”
About €35,962 a year (2026). Your veroprosentti is 20%, and €4,095 of TyEL and unemployment contributions come off on top.
You ask
“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).
You ask
“CGT on a $20,000 crypto gain held over a year, $90k salary?”
About $3,200 — the 50% discount halves the gain to $10,000, taxed at your marginal rate.
You ask
“How much HELP/HECS will I repay on $75,000?”
About $821 for 2026-27 — 15c of each dollar over the $69,528 threshold, straight from ATO rates.
Suomessa? · In Finland?
Finland, down to your tax card
Tell your assistant where you live and Fin does the rest: municipal tax for all 292 mainland municipalities and their parishes, straight from Vero’s 2026 decision, plus state tax, YLE tax, TyEL and the earned-income credit — and the veroprosentti Vero would put on your tax card. It matches Vero’s own published examples to the cent.
“Mikä on veroprosenttini, jos tienaan 48 000 € vuodessa Helsingissä ja kuulun kirkkoon?”
→
income_tax_estimate“Paljonko veroa maksan osakkeista, jotka myin 12 000 eurolla ja ostin yli 10 vuotta sitten?”
→
cgt_estimate“What was the ALV rate on an invoice dated 30 June 2024?”
→
tax_rate_as_of“Compare company tax in Finland, Estonia and Sweden.”
→
compare_countries
Prefer to click? Open the Finland income tax & tax card calculator →
193 countries, cited
Every country tax_rate_lookup can answer for — point at a flag for its rate and authority, or open a region below for the full list. The same 193 live in the full country reference.
193 countries. Type a name or a two-letter code.
Australia
Oceania
- Consumption tax
- GST
- Standard rate
- 10%
- Authority
- Australian Taxation Office
Did you know?
A birthday cake helped sink a GST and an election: in 1993, Opposition Leader John Hewson couldn't say whether his proposed GST would make a birthday cake cheaper or dearer, fumbling about icing and candles on live TV.
- Read-only bank feeds you connect with your own key
- Automatic categorisation and deduction finding
- Income-tax estimate in the app
- BAS prepared in the app, ready for you to lodge
- Depreciation on the authority’s own rules in the app
- Income tax and take-home pay calculator on the web
- Company tax calculator on the web
- Capital gains tax calculator on the web
- Superannuation and HECS/HELP calculators on the web
- GST rates, thresholds and filing reference
- Callable by an agent through the free Tax MCP taxmcp.ai2fin.com(opens in a new tab)
Africa (51 countries)
Americas (34 countries)
Asia (34 countries)
Europe (47 countries)
Middle East (13 countries)
Oceania (14 countries)
The 10 tools your assistant gets
Open one for its arguments and a question that lands on it. Transcribed from the server’s own tools/list, so this is what your assistant actually sees.
tax_rate_lookupAll 193 countries for GST/VATOne country’s headline rates — GST/VAT standard and reduced, plus the top personal income-tax and company rates where one is on file.
| Argument | Type | What it is |
|---|---|---|
country * | string | Two-letter ISO code, case-insensitive — AU, IE, DE |
Ask it: “What’s the VAT rate in Ireland?”
tax_rate_as_ofAll 193 countries, where a rate change is on recordThe GST/VAT standard rate that applied on a particular date, rather than today’s rate.
| Argument | Type | What it is |
|---|---|---|
country * | string | Two-letter ISO code — FI, EE, KZ |
date * | string | The date to resolve, as YYYY-MM-DD |
Ask it: “What was the VAT rate in Estonia in June 2024?”
compute_gst_vatAll 193 countries with a national rateAdds or removes a country’s GST/VAT on an amount and returns the net, tax and gross split.
| Argument | Type | What it is |
|---|---|---|
country * | string | Two-letter ISO code whose rate applies |
amount * | number | Amount in local currency — tax-exclusive when adding |
mode | string | “add” puts tax on top; “remove” extracts tax already inside |
Ask it: “Add GST to $200 in New Zealand.”
compare_countriesAll 193 countriesPuts several countries side by side — GST/VAT, plus top personal income tax and company tax where on file.
| Argument | Type | What it is |
|---|---|---|
countries * | array | Two or more ISO codes — two is the minimum that means anything |
Ask it: “Compare VAT in Germany, France and the UK.”
income_tax_estimate57 countries, with US states, Canadian provinces and ScotlandPersonal income tax and take-home pay from a gross salary, through the real brackets — and for Finland, the tax-card percentage (veroprosentti) too.
| Argument | Type | What it is |
|---|---|---|
country * | string | Two-letter ISO code of a covered country — AU, GB, CA, GT… |
income * | number | Gross annual income in local currency, before tax |
taxYear | string | Like “2025-26”, or “2026” for the US and Finland |
municipality | string | Finland: your kunta, in Finnish or Swedish — Helsinki or Helsingfors. Omit for the national average |
church | string | Finland: “evangelical-lutheran” or “orthodox” for church tax; needs municipality |
age | number | Finland: age at year end, where it changes the contributions |
Ask it: “What’s my take-home on €50,000 in Tampere, and what goes on my tax card?”
company_tax_estimate139 countries (28 verified against the national authority; the rest indicative)Corporate income tax on an annual profit, including the concessional rate where one applies.
| Argument | Type | What it is |
|---|---|---|
country * | string | Two-letter ISO code of a covered country. Indicative (unverified) rates are returned marked as such: confirm them with the national authority |
profit * | number | Annual taxable profit; a loss returns nil rather than an error |
smallBusiness | boolean | Apply the small-business rate where the country has one |
Ask it: “Company tax on $180,000 profit in Australia for a small business?”
cgt_estimate71 countries — a figure where the rules are verified, the rule itself otherwiseCapital gains tax for a resident individual — Australia at the marginal rate with the 50% discount, Finland at 30%/34% with the deemed acquisition cost, and each other covered country on its own rules.
| Argument | Type | What it is |
|---|---|---|
country | string | Two-letter ISO code of a covered country; AU is the default |
proceeds * | number | Sale price of the asset |
costBase | number | What it cost. AU, required: including eligible incidental costs. FI: omit when unknown and the deemed acquisition cost is used |
income | number | AU, required: other taxable income for the year — sets the marginal rate |
heldMoreThan12Months | boolean | AU, required: over twelve months halves the taxable gain |
yearsHeld | number | FI: ten years or more raises the deemed cost from 20% to 40% of the price |
otherCapitalIncome | number | FI: other capital income this year, for the 30 000 € threshold |
capitalLosses | number | Losses to offset |
Ask it: “Tax on selling shares for €12,000 that I bought eleven years ago, in Finland?”
superannuation_estimateAustraliaSuper guarantee contributions, how much concessional cap is left, and whether Division 293 catches you.
| Argument | Type | What it is |
|---|---|---|
ordinaryEarnings * | number | Ordinary time earnings the guarantee applies to |
salarySacrifice | number | Voluntary before-tax contributions |
personalDeductible | number | Personal contributions claimed as a deduction |
otherTaxableIncome | number | Only used to test the Division 293 threshold |
taxYear | string | Like “2025-26”; omit for the current year |
Ask it: “What’s my super guarantee on $110,000 of ordinary earnings?”
student_loan_repaymentAustraliaThe compulsory annual study-loan repayment on the marginal system — HELP, HECS, VSL, SFSS, SSL and AASL.
| Argument | Type | What it is |
|---|---|---|
repaymentIncome * | number | ATO repayment income — taxable income plus reportable amounts |
taxYear | string | Like “2025-26”; omit for the current year |
Ask it: “How much HELP will I repay on $75,000?”
tax_factsCurated facts for 36 countries, plus 10 stories from historyThe story behind a country’s tax — when and why its GST/VAT began, what it replaced, and true stories that shaped it — each fact linked to its source. Without a country, a primer plus famous tax stories from history.
| Argument | Type | What it is |
|---|---|---|
country | string | Two-letter ISO code — AU, GB, JP. Omit for the global set |
Ask it: “Why does changing Australia’s GST need every state to agree?”
* required. Everything else is optional.
Income-tax estimates cover 57 countries, company tax 139 and capital gains 71, each with its own source (super & HELP/HECS: Australia). General information, not tax advice.
This page · Public
Tax MCP
Tax rates and calculators for any country — no login, no account data. For everyone.
https://taxmcp.ai2fin.comYour account
2Fin app MCP
Connect an assistant to your own 2Fin data — transactions, categories and live tax position. Asks you to sign in.
Connect the 2Fin app MCP — https://api.ai2fin.com/mcpWhat the Tax MCP covers
Every figure carries its source and the date it was checked — the national tax authority where verified, OECD statistics for indicative company-tax rates — so your assistant always knows the source, and says so when a figure is not yet verified or data is partial.
Being built next: income brackets for more countries and withholding-tax & tax-treaty lookups. Where coverage is partial, the tool tells you rather than guessing.
Connect in 3 steps
- 1
Copy the endpoint
https://taxmcp.ai2fin.com
- 2
Add it as a connector
In Claude, open Settings → Connectors → Add custom connector and paste the endpoint (works the same in ChatGPT, Cursor or your own agent). No login, no API key.
- 3
Just ask
Ask your assistant “what’s the GST on $4,400 in Australia?” or “compare VAT in Germany, France and the UK” — it calls the tool and answers.
curl -s https://taxmcp.ai2fin.com -X POST -H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"compute_gst_vat","arguments":{"country":"AU","amount":100}}}'
You will know it worked when…
Ask the question below. A connected assistant names the tool it called and gives you a figure with the authority behind it. An assistant that is not connected will answer from memory — no tool call, no source, and often a stale rate.
Paste this
“Using the tax MCP, what is the GST on $4,400 in Australia, and which authority sets that rate?”
Expect $400 of GST on a $4,000 net price, attributed to the Australian Taxation Office. If nothing is cited, the connector has not loaded — reopen your client’s connector settings and check the endpoint saved.
Where it runs
Streamable HTTP with no auth handshake, so any MCP client takes it. These are the routes people use most.
In an editor? One click.
The buttons pre-fill the server config — nothing to type.
Claude Code — one line in your terminal
claude mcp add --transport http taxmcp https://taxmcp.ai2fin.comCommon questions
What is the Tax MCP?
A free Model Context Protocol server. It lets an assistant call tax tools directly — look up GST/VAT rates for 193 countries, add or remove GST/VAT on an amount, compare countries, and estimate income tax (57 countries), company tax (139), capital gains (71), superannuation and HELP/HECS repayments.
How do I connect it to my assistant?
Add the endpoint (https://taxmcp.ai2fin.com) as a custom MCP connector in any MCP-compatible assistant — Claude, ChatGPT, Cursor, or your own agent. There is no login or API key — it is public.
Is my financial data involved?
No. This is the public tax server — Fin computes over published rate data only and stores nothing, with no login. It is completely separate from your 2Fin account. To connect an assistant to your OWN data, use the authenticated app server below.
Tax MCP or the 2Fin app MCP — which do I want?
Use this public Tax MCP (https://taxmcp.ai2fin.com) for rates and calculators — GST/VAT, income, company and capital-gains tax for any country, no sign-in. Use the 2Fin app MCP (https://api.ai2fin.com/mcp) when you want your assistant to work with your own account: your real transactions, categories and live tax position (it asks you to sign in first).
What can I ask it?
Things like “add GST to $200 in New Zealand”, “what’s the VAT rate in Ireland?”, “how much HECS will I repay on $75k?”, or “compare GST and income tax for Singapore, Australia and the UK”.
Is it free?
Yes — completely free, no sign-up. The same rates power the free calculators and comparison tool on this site.
How much does it know about Finland?
Enough to set a tax card. Give it your municipality (any of the 292 on the mainland, by Finnish or Swedish name), whether you belong to a parish and your age, and it works out state, municipal and church tax, YLE tax, the health-insurance, TyEL pension and unemployment contributions and the earned-income credit — and the veroprosentti Vero would set, matching Vero's own published examples to the cent. It also knows ALV (25.5%, 13.5% and 10%, and the rate on any past date), capital gains with the deemed acquisition cost and the €1,000 rule, and the 20% corporate rate. Ask in Finnish, Swedish or English.
Know someone whose agent should know tax?
Every share helps another assistant answer with sourced figures instead of guesses.
Building with the Tax MCP?
Drop this badge in your README — it shows your numbers come from cited sources.
[]Explore the tax tools
All tools →Compare tax by country
Put countries side by side — rates, local names, structure and filing.
Tax rates by country
Every standard and reduced GST/VAT rate, with income and company tax, in one table.
GST Calculator
Add or remove GST/VAT on any amount, with the formula shown every time.
BAS Calculator (AU)
Your quarterly GST position — 1A, 1B and the net amount payable, worked out for you.
Income Tax & Take-Home
Your income tax, Medicare levy and take-home pay on any salary.
UK Income Tax & Take-Home
Your UK income tax, National Insurance and take-home pay — England, Wales & NI rates.
India Income Tax & Take-Home
Your India income tax on the new regime — the ₹75k standard deduction, the ₹12L rebate and 4% cess, with take-home.
US Income Tax & Take-Home
Your US federal income tax, Social Security and Medicare — single filer, with take-home pay.
Finland Income Tax & Tax Card
Your Finnish take-home pay and tax-card percentage (veroprosentti) — any municipality, church tax, YLE tax and contributions.
HECS/HELP Repayment
Your compulsory study-loan repayment on the marginal system, and what a pay rise really adds.
Superannuation (AU)
Your Super Guarantee, how much concessional cap is left, and whether Division 293 catches you.
Capital Gains Tax
Sold an asset? Fin covers CGT in 71 countries — a figure where the rules are verified, the rule itself otherwise.
Crypto Tax (AU)
Sold or swapped crypto? Fin works out the CGT — same 50% discount, at your marginal rate.
Business Space at Home (AU)
A desk or a place of business? The deductions each year against the CGT on that share when you sell.
Tax Deduction Finder (AU)
Pick your work and how you earn, and get a checklist of what to claim and where each claim goes.
Company Tax Calculator
See the tax on your company’s profit in 139 countries — every rate sourced.
Tax facts
The weird, wonderful and true history of GST and VAT — every fact sourced.
