When you live across borders, the first questions are always the same: which country is your tax residence, and which country gets to tax each kind of income? This wizard walks the treaty tie-breaker and shows the usual answer, income type by income type — so you know which conversations to have before the tax bill arrives.
If two countries both claim you as resident, a tax treaty's tie-breaker decides which one wins — usually in this order: where you have a permanent home, then your centre of vital interests, then where you habitually live, then nationality. Once residence is settled, the treaty allocates the right to tax each type of income between the two countries, and your residence country relieves the overlap by credit or exemption. Real estate is the great exception — it is taxed where it sits. And for US citizens, the saving clause lets the US tax them almost as if the treaty did not exist.
The three questions, treaties and tie-breakers, and the credit-versus-exemption methods — plus a treaty quick-reference appendix and a companion workbook that estimates the tax stream by stream. Get the chapters and the launch notice.