Domicile is not where you live or your nationality. It is the country you treat as your permanent home, and until April 2025 it shaped how the UK taxed your foreign wealth.
Domicile is one of the most misunderstood words in UK tax. It is not your nationality, not where you happen to live, and not the same thing as tax residence. It is a concept borrowed from general English law that asks a deceptively simple question: which single country do you treat as your true, permanent home? For decades the answer shaped how Britain taxed the global wealth of people living here. As of April 2025, its role has been dramatically reduced, but understanding it still matters.
Everyone has exactly one domicile at any time, and you cannot be without one. UK law recognises three ways you acquire it.
You receive a domicile of origin at birth. Under the traditional rules it is normally taken from your father if your parents were married, or your mother if they were not. It is sticky: it never disappears, and it revives automatically if any other domicile you have acquired is lost.
While you are legally dependent (a child under 16, for example), your domicile follows that of the person you depend on. If your father changed his domicile while you were a minor, yours would have moved with his.
As an adult you can acquire a domicile of choice by physically settling in a new country with the genuine, settled intention of remaining there permanently or indefinitely. This is hard to prove. HMRC looks at the whole picture, where your family, property, business interests and even burial plans point. Simply living abroad for many years is not enough if you intend to return.
The single biggest source of confusion is mixing up domicile and tax residence. They answer different questions and operate on different timescales.
| Feature | Residence | Domicile |
|---|---|---|
| Decided by | Statutory Residence Test (day counts) | General law (permanent home) |
| Timescale | Re-assessed every tax year | Long-term, often lifelong |
| How it changes | Change your days/ties in a year | Genuinely settle in a new country |
| Historic tax effect | Whether UK or worldwide income is taxed | How foreign income and gains were taxed |
You can be UK resident but non-domiciled, which was the classic "non-dom" position, or UK domiciled while living abroad for a year.
Consider Sofia, an Italian national with an Italian domicile of origin who moved to London in 2018 and remained UK resident every year since. She also has £40,000 of Italian rental income each year.
Before 6 April 2025: As a non-dom, Sofia could claim the remittance basis. Her Italian rent stayed outside UK income tax as long as she did not bring it into the UK. She would pay UK tax only on her UK earnings.
From 6 April 2025: The remittance basis is gone. Because Sofia has been UK resident for more than four years and was UK resident in the prior ten, she does not qualify for the new four-year FIG (foreign income and gains) relief available to recent arrivals. Her £40,000 of Italian rent is now taxed in the UK as part of her worldwide income, with relief for any Italian tax already paid under the UK-Italy double taxation agreement.
The new system is residence-based, not domicile-based. A genuinely new arrival, non-resident for the previous ten years, can still shelter foreign income and gains for their first four UK-resident years. After that, everyone is taxed on worldwide income, whatever their domicile.
Domicile has not vanished entirely: it still matters for inheritance tax in transitional cases and for some trust rules. But for income and gains, residence is now the dominant test. Our blog tracks how the transitional rules are being applied in practice.
Domicile used to be the master key to sheltering foreign wealth from UK tax. After April 2025, that key mostly turns on residence instead.
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