What is the deemed domicile rule?
Answered 17 March 2026
Here is a comprehensive explanation of the deemed domicile rule based on the available sources.
The Deemed Domicile Rule
The deemed domicile rule treats certain individuals who are not domiciled in the UK under general (common) law as if they were UK-domiciled for tax purposes. It operates across Inheritance Tax (IHT), Income Tax, and Capital Gains Tax (CGT), though the rules differ slightly between them.
What the law says
For Income Tax and CGT (from 6 April 2017):
Section 835BA of ITA 2007 (inserted by s.29 Finance (No.2) Act 2017) provides that an individual not domiciled in the UK at a time in a tax year is to be regarded as domiciled in the UK at that time if either Condition A or Condition B is met:
- Condition A: The individual (a) was born in the UK, (b) had a UK domicile of origin, and (c) is UK resident for the relevant tax year.
- Condition B: The individual has been UK resident for at least 15 of the 20 tax years immediately preceding the relevant tax year. However, Condition B is not met if the individual is not UK resident for the relevant tax year and there is no tax year beginning after 5 April 2017 and preceding the relevant tax year in which they were UK resident.
For IHT (prior to 6 April 2017):
Section 267(1) IHTA 1984 provided for deemed domicile in two ways:
- The 3-year rule (s.267(1)(a)): An individual who was domiciled in the UK on or after 10 December 1974 and at any time within the three calendar years before the relevant event is deemed UK-domiciled.
- The 17 out of 20-year rule (s.267(1)(b)): An individual who was resident in the UK for at least 17 of the 20 years of assessment ending with the year in which the relevant event falls.
For IHT (from 6 April 2017 to 5 April 2025):
Three categories of deemed domicile apply:
- s.267(1)(a) (3-year rule) — unchanged.
- s.267(1)(aa) — A formerly domiciled resident (FDR): born in the UK with a UK domicile of origin, who is Income Tax resident in the UK in the relevant year and one of the two preceding years.
- s.267(1)(b) — Changed to a 15 out of 20-year rule: the individual must have been UK resident for Income Tax purposes for at least 15 of the 20 years preceding the relevant tax year, and for at least 1 of the 4 years ending with the relevant tax year.
Note: From 6 April 2025, for IHT purposes, domicile is replaced by a system based on long-term UK residence.
HMRC guidance / practice
Effect of the rule: Deemed domicile status does not change an individual's actual domicile, but means they are treated as if they were actually UK-domiciled for the relevant tax year. A key consequence is that the remittance basis cannot be claimed once an individual is deemed domiciled.
IHT — 3-year rule example: Paula had an English domicile but moved to Spain and acquired a Spanish domicile of choice on 31 January 2007. She died on 1 January 2010 still in Spain. Because of the deemed domicile 3-year rule, she was deemed domiciled in the UK at her death and her worldwide estate was chargeable to IHT.
IHT — 17/20-year rule example: Bronislaw had a Polish domicile but worked in the UK since 1993. He returned to Poland and died there in 2011. Despite his common law non-UK domicile, the 17 out of 20-year rule meant his entire worldwide estate was chargeable to IHT.
Transitional rule (15/20 rule): If the first year in which an individual would otherwise have become deemed UK-domiciled under the 15/20 rule is 2017/18, and they do not resume UK residence, the transitional rule applies and they are not UK deemed domiciled.
Exceptions: The deemed domicile rules do not apply:
- Where domicile does not include deemed domicile under the relevant provision;
- When considering double taxation agreements with France, Italy, India or Pakistan (for death duties);
- When deciding whether savings products in the Channel Islands or Isle of Man are excluded property.
Section 267 is prescriptive: Where s.267 IHTA 1984 applies, a person is treated as domiciled in the UK for IHT purposes — it is not merely one factor to weigh.
Citation sources
the UK”. 51. Miss Lincoln suggested that section 267 IHTA 1984 was only one thing to take into account when determining domicile for the purposes of IHT. She submitted that the deemed domicile should not apply in Martin’s case, as he was “trapped” in the UK. We disagree. Section 267 IHTA 1984 is a prescriptive rule. Where it applies a person is treated as domiciled in the UK for IHT purposes. We note that Martin came to the UK in 1978 and had sufficient NI contributions to demonstrate that he ha
Bronislaw has a Polish domicile - He works in the UK and is UK tax resident. He has lived and worked in the UK since 2 February 1993 but he has always intended to return home to Poland. He starts to feel ill and returns home to Poland to be with his family on 8 April 2011 and unfortunately dies on 2 May 2011. Because of his common law domicile his world wide estate would not be chargeable to IHT. However the ‘17 out of 20’ tax year deemed domicile rule means that he is deemed to be domiciled in
Humberto is 70 - he has a Portuguese domicile but has been Tax resident in England since he was 20. He decides that he wants to move back to Portugal and he leaves the UK for good on 1 January 2007. On 2 January 2010 he makes a gift of £400,000 to a Gibraltar discretionary settlement from his Jersey Bank account. Without the deemed domicile provisions this would be a gift of excluded property. However the ’17 out of 20’ year rule will apply to this transfer as Humberto was tax resident in the UK
Paula has an English domicile and lives in England. She retires from work and decides that she wants to live for the rest of her life in Spain. She goes to Spain and takes a Spanish domicile of choice on 31 January 2007. She dies on 1 January 2010 still in Spain. Because of the deemed domicile ‘three year rule’ she is deemed domiciled in the UK at her death and her world wide estate is chargeable to IHT. Her estate can, of course, claim tax relief for any Inheritance Tax paid in another country.
From 6 April 2025, for inheritance tax purposes, domicile is replaced by long-term UK residence and you can find details of these rules at IHTM47000. Registering as an overseas elector and/or voting in UK elections may be considered as evidence of either creating a political link with another country or continuing one with the UK. But if these actions were taken on or after 6 April 1996, they are disregarded in ascertaining common law domicile for the purposes of Income Tax, Capital Gains Tax a
Ralph has a German domicile of origin. He has been resident in the UK from 2002/03 to 2016/17 (15 years). Even if he is non-resident for the whole of 2017/18, he would normally become deemed domiciled under the new 15/20 rule in the 16 year. However, if the first year in which he would otherwise have been deemed UK domicile is 2017/18 and he does not resume UK residence then the transitional rule applies and he is not UK deemed domicile.
situated, see CG12400. Deemed domiciled in the UK (2017/18 onwards) For 2017/18, and subsequent years, an individual may be deemed domiciled in the UK. Deemed domicile status for a year does not change an individual’s actual domicile status but in broad terms means that they are treated they as if they were actually UK domiciled in the UK for the year. The deemed domicile rules are in s835BA ITA 2007 and guidance is within the Residence, Domicile and Remittance Basis Manual. As a brief overview,
PART 1 Direct taxes Domicile, overseas property etc Deemed domicile: income tax and capital gains tax 29 1 In Chapter 2A of Part 14 of ITA 2007 (income tax liability: domicile), after section 835B insert— Deemed domicile 835BA 1 This section has effect for the purposes of the provisions of the Income Tax Acts or TCGA 1992 which apply this section. 2 An individual not domiciled in the United Kingdom at a time in a tax year (“the relevant tax year”) is to be regarded as domiciled in the United Kin
Deemed domicile in the UK can arise in two ways. Section 267(1)(a) IHTA 1984 provides for the ‘3-year’ rule. This applies where the individual was domiciled in the UK on or after 10 December 1974 and at any time within the three calendar years before the relevant event. Section 267(1)(b) IHTA 1984 is the basis of the ‘17 out of 20-year’ rule. For the rule to apply the individual must have been resident, for Income Tax purposes, in the UK on or after 10 December 1974 and in not less than sevent