Legal domicile is the place a legal system treats as a person's permanent home, or as a company's legal base, for deciding which country's or state's laws govern certain matters. For individuals it is the place where someone lives and intends to remain indefinitely; for companies it is usually the jurisdiction of incorporation or, in some legal systems, the place of real management. Domicile can decide succession, family law, court jurisdiction and, in some countries, taxation.
Domicile is often confused with residence and nationality. Residence is where a person actually lives at a given time, often measured by days present; nationality is citizenship of a state. A person can be a national of one country, resident in a second and domiciled in a third. The concept is strongest in common law countries, while many civil-law systems rely more on habitual residence or nationality.
Legal domicile in plain terms
Think of domicile as the address the law writes in pencil next to your name and is slow to erase. You can travel, rent a flat abroad for a few years or work in another country, and the law may still say your real home is where you came from, because that is where it believes you mean to end up.
Changing it takes more than a change of address. You normally have to move somewhere and show that you plan to stay there for good. Companies have a similar "home" address in law: the country where they were set up, or where the people really running them sit.
Domicile of individuals
In English law, and in systems derived from it, every person has exactly one domicile at any time. Three types are recognised:
- Domicile of origin. Acquired at birth, normally from a parent. It is hard to lose and revives if a later domicile is abandoned without a new one being acquired.
- Domicile of choice. Acquired by an adult who lives in a new place with the intention of remaining there permanently or indefinitely. Both residence and intention must be proved, and courts look at evidence such as property, family ties, wills and burial wishes.
- Domicile of dependence. Applies to children and people lacking legal capacity, whose domicile follows that of a parent or guardian. In England, the Domicile and Matrimonial Proceedings Act 1973 ended the rule that a married woman automatically took her husband's domicile.
In the United States, domicile is set state by state. It decides which state may tax a person as a resident, which state's probate courts handle an estate, and, for federal courts, a person's state citizenship for diversity jurisdiction.
Domicile, residence and nationality
| Concept | What it measures | Main uses |
|---|---|---|
| Domicile | Permanent home and long-term intention | Succession, family law, some taxes |
| Residence | Physical presence and ties in a period | Income tax, immigration status |
| Nationality | Citizenship of a state | Passports, voting, US worldwide taxation |
Most income tax systems are based on tax residency, often using day-count tests such as the 183 days tax rule, rather than domicile. The United States is unusual in taxing its citizens on worldwide income wherever they live, and it uses FATCA (Foreign Account Tax Compliance Act) to obtain account data from foreign banks. When two countries both claim a person, a double taxation treaty usually contains tie-breaker tests to prevent double taxation.
Domicile of companies
Countries use two broad approaches to a company's legal home. Under the incorporation theory, used in the United Kingdom, the United States and many other countries, a company belongs to the jurisdiction under whose law it was formed. Under the real seat theory, traditionally applied in parts of continental Europe, the decisive factor is where the company is actually managed. For court jurisdiction within the European Union, the Brussels I Recast Regulation treats a company as domiciled where it has its statutory seat, central administration or principal place of business.
For tax, many countries treat a company as resident if it is incorporated there or if its central management and control is exercised there. This is why a holding company or shell company registered in a tax haven or an offshore financial centre (OFC) may still be taxed elsewhere if its directors meet and decide there, and why economic substance rules have become important.
The end of the UK non-dom regime
The United Kingdom was long the clearest example of domicile affecting tax. UK residents who were not domiciled there, known as "non-doms", could elect the remittance basis and pay UK tax on foreign income and gains only when they brought the money into the country. Inheritance tax on worldwide assets also depended on domicile, which made it central to planning how families passed on generational wealth.
From 6 April 2025 the UK replaced this with a residence-based system. New arrivals who have not been UK resident in the previous ten years can claim a four-year exemption for foreign income and gains, after which worldwide income is taxed. Inheritance tax on worldwide assets now applies to long-term residents, broadly those UK resident for at least 10 of the previous 20 tax years. Domicile remains relevant in UK law for matters such as succession and family law, but it no longer drives UK taxation. Relocation for tax reasons sits in the area covered by tax avoidance vs tax evasion, and banks record clients' residence for reporting under the Common Reporting Standard (CRS).