Tax residency can determine the scope of a person's obligations, but it does not necessarily coincide with nationality, daily domicile, or place of employment. When there are connections with more than one territory, domestic rules and applicable agreements may interact.
Residency Criteria
Rules may evaluate presence, housing, economic or personal ties, and other factors. There is no single test valid everywhere, nor does a single criterion resolve every case. It is advisable to document periods, movements, and connections.
Scope of Income and Assets
A system may tax its residents on a broad base and non-residents on certain local sources, but the precise scope varies. Declarative duties may also exist separate from the obligation to pay. Classifying the source and date of each income helps to analyze the case.
Dual Residency and Coordination
Two jurisdictions could consider the same person a resident according to their domestic rules. Conventions, when applicable, can offer tie-breaker criteria or coordination mechanisms; their application depends on the text, validity, and specific facts.
Documentation of Movements
Keep records of travel, housing, activity, sources of income, and relevant communications. A verifiable chronology is usually more useful than approximate memories. Before making cross-border decisions, identify the obligations in each involved location.
Conclusion
International residency and taxation require analyzing overlapping rules and individual facts. This guide explains general concepts; it does not determine a person's residency.