Worldwide taxation

Worldwide taxation is the default in many residence-based systems. Once a country treats you as resident, it normally asks about income and gains from everywhere: salary, business profits, dividends, interest, rental income, investment sales, and sometimes trust or company income. The fact that cash remains abroad rarely answers the question by itself.

This does not give the residence country exclusive rights. The country where work is performed, property is located, or a company pays a dividend can still tax at source. A treaty or domestic law then may provide an exemption or a foreign tax credit. A credit is commonly capped at the home-country tax on the same foreign income, so it is not a guarantee that every foreign charge is recovered.

For a mover, build an income inventory before becoming resident: brokerage accounts, private-company shares, crypto, property, loans, pension interests, trusts, and foreign companies. Then identify the reporting dates and cost bases. A change in residence can bring a foreign asset into annual reporting long before it produces cash. Worldwide taxation is therefore less about a headline rate than about the breadth of the tax base and the records required to support it.

This is why a residence certificate, a clean opening balance sheet, and a calendar of filing dates are practical move documents. They turn a broad legal principle into something that can be reported accurately.