Determining tax residency is only part of the task of taxation. Next, you need to decide on the taxes on income from which sources a tax resident / non-resident in a particular jurisdiction should pay.
Conceptually, there are two approaches to determining the geography of sources of income taxed in a particular jurisdiction:
- the "global" approach provides for the collection of tax on income received by a tax resident, regardless of their source - from the state of residence or from abroad. The global approach is the most common;
- the "territorial" approach provides for the collection of tax on income received by a tax resident only from the state where he is a tax resident.
However, reasoning at the level of these concepts is of little use to a particular person in his particular life situation. Firstly, because the logic of determining the jurisdiction - the source of income is different for different types of income (active or passive income, whether the income is physically related to a particular jurisdiction). Secondly, because even for certain types of income, different approaches to determining their source can be established.
In addition, determining the country in which a person is a tax resident is important in a situation where a particular income may be taxed in different countries at the same time. As a rule, it is the country of residence that grants the right to a credit (deduction) of tax paid in another jurisdiction. Such a set-off (deduction) is possible if there is an appropriate international treaty for the avoidance of double taxation (DTT).