bots.st/doubletaxation
DoubleTaxation
Tax residence and treaty tie-break advice
2273 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 9
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://doubletaxation.app/api/mcp
What it can do
| Tool | What it says it does |
|---|---|
check_residency | Determines the person's tax residence between the version's home state and another country, step by step. Without all answers it returns status "needs_answer" and the next question (id, text, options); ask the user and call again with all answers collected so far. When complete it returns status… |
compare_business_forms | Business tax calculator for a resident of one country and one sector (activity): every legal form (sole proprietor, own company) under every available tax system — total tax and contributions, what remains, rate, line items, why a system is unavailable for the sector or amount, conditions, legal… |
count_days | Counts days of stay per country from the trips the user provides (country, from, to) under each country's own counting rule (calendar year, tax year, any 12 months, US substantial presence test, continuous stay): days in the counting period, the day threshold for tax residence and its legal… |
exit_tax_check | Whether a country levies an exit (departure) tax on individuals who give up tax residence: who pays and on what (assets, thresholds, prior residence period), deferral or relief (e.g. moving within the EU/EEA), the legal norm with a link and the date checked. |
list_countries | Lists the countries that can be checked against the home state of a version: whether a tax treaty is in force (title, dates, link), whether per-income treaty rules and tax burden data exist, plus the allowed citizenship options and years for check_residency. |
list_versions | Lists the 18 versions of DoubleTaxation. Each version is written for taxpayers of one home state (in its language) and compares it with 21 other countries. Call this first if you are not sure which version fits the user. |
next_steps | What to do once the tax residence is known (the same blocks as under the result on doubletaxation.app and in check_residency "done"): how to get a certificate of residence, obligations of a resident (returns, deadlines), obligations and options of a non-resident with income from the other state… |
regime_search | Special and preferential tax regimes for individuals (newcomers / impatriates, employees, self-employed, investors, pensioners) in 21 countries. Filter by country, kind, status and free text. Returns per regime: official name, who it is for, the benefit, duration, how to apply, limits and risks… |
tax_burden | Income tax and social contributions on an annual salary in one or more countries (OECD Taxing Wages method: single person, no children, full-year employee). Returns net pay, personal rate, tax wedge and marginal rate, sorted from lowest to highest personal rate. 21 countries are fully checked… |
In its maker's words
Tax residence, treaty tie-breaker, next steps, exit tax, special tax regimes, business forms.
- Website
- doubletaxation.app/en/mcp
- Publisher
- doubletaxation.app
- Listed from
- the official MCP Registry as
app.doubletaxation/doubletaxation - Version
- 1.2.0, updated 6 Nov 2026
- Kinds of work
- Law, tax and government, Finance and markets, Other work
The domain it lives on
- doubletaxation.app
- registered 29 Oct 2026 (1 months ago), at Cloudflare, Inc., its home page is a working site
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 2273 ms | |
| Answered | 2600 ms | |
| Answered | 3019 ms |
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