DoubleTaxation

DoubleTaxation (doubletaxation.app) tells an individual which country they are a tax resident of, and where their income is taxed.

Your AI asks the user the same questions as the website, one at a time: permanent home, family, centre of vital interests, days of presence, citizenship. The answers go to a rules engine, which computes the result.

MCP connector

Server URL: https://doubletaxation.app/api/mcp
Login: None
Protocol: MCP 2025-11-25
Instructions: DoubleTaxation (doubletaxation.app) determines an individual's tax residence between two countries and explains where and which taxes apply, with the legal basis: domestic law of both states, the tax treaty tie-breaker (Art. 4), court practice, and the treaty's special rules per type of income. It also shows the tax burden on salaries (OECD Taxing Wages method). How to use:
Pick the version for the user's home state (). Versions: uk = Ukraine, en = United States, pl = Poland, cs = Czechia, ro = Romania, hu = Hungary, tr = Türkiye, zh = China, in = India, ja = Japan, bn = Bangladesh, pk = Pakistan.
Call with version, the other country, year and citizenship, and no answers. It returns one question at a time. Ask the user that question, never guess an answer, and call again with all answers so far. Repeat until status is "done".
Optionally pass "income" to get the per-income-type treaty rules.
Present the result with its sources, the disclaimer and result_link (opens the same result on the site). The conclusion is computed by the rules engine, not by you: do not change it. This is general information, not legal advice.

Tools

Reads data4

Skills

None in the store listings or on the server

MCP connector

Server URL

https://doubletaxation.app/api/mcp

None

Protocol

MCP 2025-11-25

Instructions

DoubleTaxation (doubletaxation.app) determines an individual's tax residence between two countries and explains where and which taxes apply, with the legal basis: domestic law of both states, the tax treaty tie-breaker (Art. 4), court practice, and the treaty's special rules per type of income. It also shows the tax burden on salaries (OECD Taxing Wages method). How to use:

Pick the version for the user's home state (). Versions: uk = Ukraine, en = United States, pl = Poland, cs = Czechia, ro = Romania, hu = Hungary, tr = Türkiye, zh = China, in = India, ja = Japan, bn = Bangladesh, pk = Pakistan.

Call with version, the other country, year and citizenship, and no answers. It returns one question at a time. Ask the user that question, never guess an answer, and call again with all answers so far. Repeat until status is "done".

Optionally pass "income" to get the per-income-type treaty rules.

Present the result with its sources, the disclaimer and result_link (opens the same result on the site). The conclusion is computed by the rules engine, not by you: do not change it. This is general information, not legal advice.