How to Genuinely Change Your UK Domicile

Domicile is one of the oldest and most distinctive concepts in UK private international law — and one of the most misunderstood by the internationally mobile individuals to whom it applies. It determines the scope of UK inheritance tax, affects the treatment of overseas trusts, and can have significant implications for how an estate is administered. Yet domicile is hard to define precisely and, in practice, harder to change than most people believe.

This guide explains how UK domicile is acquired, what it takes to genuinely change it, why the April 2025 non-dom reforms changed its significance, and where domicile still matters for planning purposes.

What Domicile Is and How It Arises

Domicile is a legal concept distinct from nationality, citizenship, and tax residency. In essence, it is the country with which you have the closest personal connection — your legal "home" in a fundamental sense. English law recognises three types of domicile:

Domicile of origin. This is the domicile you are born with. Under English law, it is the domicile your father held at the time of your birth (or, for a child born after the father's death or outside marriage, the mother's domicile). Most British nationals born in the UK to British parents have a UK domicile of origin. This domicile "clings" — it is not lost merely by leaving the UK, even for decades.

Domicile of choice. This is a domicile acquired by settling in another country with the intention of living there permanently or indefinitely. The key elements are: (a) actual residence in the country; and (b) the settled intention to remain there permanently, without any present intention to return to the country of origin.

Domicile of dependence. This applies to children under 16 and historically to married women — their domicile followed the person they were legally dependent on. Since 1974, a married woman's domicile is independent of her husband's.

The domicile of origin has a unique characteristic not shared by domicile of choice: it is "in suspension" rather than permanently lost when you leave. If you acquire a domicile of choice and then abandon it (by ceasing to live there and forming an intention to live elsewhere), your domicile of origin revives — even though you have not returned to the UK.

Why Domicile Is Hard to Change

HMRC and UK courts take a sceptical view of claimed domicile changes, particularly where the claimed change would benefit the individual's tax position. The courts look at the totality of the evidence — not just the individual's stated intentions, but the weight of their actions.

Evidence that supports a genuine change of domicile of choice might include:

• Acquiring a home in the new country that is clearly a permanent base, not a temporary residence
• Selling the UK home (maintaining a UK base is inconsistent with an intention to settle elsewhere permanently)
• Acquiring citizenship of the new country
• Making a will governed by the law of the new country
• Moving family to the new country
• Disposing of club memberships, professional connections, and social ties in the UK
• Engaging in the civic life of the new country
• Making statements (in correspondence, memoirs, estate planning documents) about the intention to remain
• A long and settled period of residence abroad without apparent plans to return

Evidence that undermines a claimed change of domicile:

• Maintaining a UK home
• Frequent and extended visits to the UK ("just visiting" becomes hard to sustain over many years)
• UK-based professional, social, and business connections that suggest the UK remains the real centre of life
• Plans or preparations to return to the UK (school arrangements for children, property search in the UK, explicit statements)
• Making a UK-law will
• Joining a UK burial plot or making burial plans in the UK

The leading cases — including Buswell v IRC [1974] and IRC v Bullock [1976] — establish that the intention must be "a fixed and settled purpose" to reside permanently in the new country, not merely a preference to do so "for the time being." The bar is deliberately high.

The Position After April 2025: The Long-Term Resident Test

The April 2025 non-dom reform fundamentally changed the IHT landscape for individuals connected to the UK. The concept of "deemed domicile" — which previously caught long-term UK residents (those resident for 15 of the prior 20 years) within the UK IHT net regardless of their domicile — has been replaced by the Long-Term Resident (LTR) test.

Under the LTR test, an individual is a Long-Term Resident for IHT purposes if they have been UK resident for 10 or more of the previous 20 tax years. Once an LTR, they are subject to UK IHT on worldwide assets, regardless of domicile. After leaving the UK, an LTR remains within the UK IHT net for a "tail" period — up to 10 years depending on how long they had been resident.

The practical consequence for domicile planning is significant: for someone who has been long-term UK resident, changing domicile alone does not solve the IHT problem. You must also leave the UK and remain non-UK resident for a sufficient period to exit the LTR net. Simply settling abroad with the intention of never returning — which might constitute a genuine change of domicile — does not immediately remove you from the UK IHT regime if you have been UK resident for 10+ of the last 20 years.

For people who have not been long-term UK resident — typically those who moved to the UK from overseas, have maintained non-UK domicile, and have not been resident for 10 of the prior 20 years — domicile still determines whether they are within the worldwide IHT scope. For this group, genuinely maintaining non-UK domicile remains highly valuable.

Where Domicile Still Matters

Despite the reforms, domicile remains relevant in several important planning contexts.

Excluded property trusts. An offshore trust settled by a non-UK domiciled individual before they became an LTR may qualify as an "excluded property" trust — sheltering the trust assets from UK IHT indefinitely, even after the settlor becomes UK resident or an LTR (provided the trust was settled before the relevant thresholds were crossed). The domicile status at the date of settlement is therefore critical. A trust settled by a genuinely non-UK domiciled individual before they moved to the UK, or during a period when they were non-UK domiciled, can have significant long-term IHT advantages. This makes domicile planning important for individuals who are considering moving to the UK.

Income tax on non-UK source income and gains. The remittance basis and the non-dom regime were abolished entirely from 6 April 2025 and replaced by a 4-year Foreign Income and Gains (FIG) regime available to new arrivers who have been non-UK resident for at least 10 consecutive years. Existing remittance-basis users moved onto the new regime with transitional rules. Domicile no longer determines whether the remittance basis applies (it is no longer available), though domicile remains relevant in the other contexts described in this guide — this is a complex transitional area and advice is essential.

Succession law and estate administration. Under the common-law conflict of laws rules, an individual's succession to moveable property (shares, cash, personal property) is governed by the law of their domicile at death. For immoveable property (real estate), the law of the country where the property is situated governs. This affects how an estate is administered, whether foreign succession law applies, and whether forced heirship rules (applicable in many civil-law countries) override the deceased's wishes expressed in an English-law will.

The IHT "tail" after departure. Under the LTR rules, how long the departing individual remains in the UK IHT net after leaving depends in part on domicile — a UK domiciliary who was also an LTR may face a longer tail than a non-UK domiciliary LTR.

Practical Steps to Build a Genuine Domicile Change

If your planning objectives include a genuine change of UK domicile, the following practical steps — all of which create an evidential record — are commonly recommended:

1. Acquire a permanent home in the new country and, ideally, dispose of the UK home (or at minimum treat it as investment property, not a personal base)
2. Make a will under the law of the new country, in addition to or in replacement of any English will
3. Consider applying for citizenship of the new country when eligible
4. Engage in the civic, professional, and community life of the new country
5. Move family ties to the new country
6. Keep a detailed record of your intentions — a personal diary or memoir entries, contemporaneous documents, correspondence with advisers — that demonstrates your settled intention to remain
7. Maintain the minimum UK physical presence necessary (very short annual visits are consistent with a domicile change; extended regular visits are not)
8. Avoid public statements, social media posts, or professional connections that suggest the UK remains your "home"

This evidence base is not merely academic. On death, HMRC may challenge the domicile status of an individual whose estate would be significantly reduced by a non-UK domicile finding. The executors will need to defend the position with factual evidence accumulated over years.

How Global Investments Can Help

Global Investments advises internationally mobile high-net-worth individuals on domicile planning as part of comprehensive tax and estate planning. We can help you understand the interaction of domicile with the April 2025 LTR reforms, assess whether excluded property trust planning is still available in your circumstances, and identify the practical steps needed to build an evidential record supporting a genuine domicile change. We work with specialist UK private client lawyers and tax advisers who handle contested domicile cases and can provide robust technical advice. Contact us to discuss your situation.