These changes came into effect from 6 April 2025. The following insight summarises the new regime and offers some thoughts on how to navigate the issues.
UK resident non-doms were individuals living in the UK with a domicile outside the UK and who had no intention to remain in the UK permanently or indefinitely. For the first 15 years of UK residence, they could claim the ‘remittance basis’ in respect of foreign income and capital gains (‘FIGs’) such that these FIGs were only chargeable to UK tax if and when these were brought to or enjoyed in the UK. They remained chargeable to UK tax on their UK income and capital gains in the year that they arose (the ‘arising basis’).
After 15 years of UK tax residence they become ‘deemed UK domiciled’ and no longer eligible for the remittance basis, meaning a move to worldwide taxation on income and gains on an arising basis.
Turning now to inheritance tax, UK resident non-doms were chargeable to UK IHT only on the value of their assets situated in the UK. The exposure to UK IHT extended to worldwide assets once these individuals became deemed UK domiciled after 15 years of UK residence. The non-UK assets of a deemed dom leaving the UK remained within the scope of IHT for three years following their departure from the UK (the ‘IHT tail’).
Before becoming domiciled (actual or deemed), individuals could settle assets into an offshore Trust (‘protected settlements’) so that trust income and gains (with the exception of UK source income) were not chargeable to UK tax unless matched to distributions or benefits provided to beneficiaries. Furthermore, any non-UK assets held within these settlements remained outside the scope of IHT, even when the settlor had become UK domiciled or deemed domiciled.
Despite headlines to the contrary, domicile is a common-law concept and has not been abolished. However, from 6 April 2025 it is no longer relevant in determining liability to UK tax. Instead, a new residence-based regime now applies for income tax, capital gains tax (CGT) and IHT purposes.
UK tax residence for any year from 2013/14 will be determined by reference to the Statutory Residence Test (SRT) The pre-SRT rules will apply for earlier years.
Split-years under the SRT and years of dual residence where an individual is treated as treaty resident in another jurisdiction will also count as years of UK residence under the new regime.
The use of domicile to determine liability to UK tax was quite an outdated concept in these days of greater international mobility. It could also be quite subjective and in recent years we have seen an increasing number of lengthy and costly HMRC enquiries into clients’ domicile status. The SRT offers certainty on residence for a tax year and now becomes crucial in determining an individual’s exposure to UK taxes. Domicile will however continue to be important in relation to historic offshore structures in determining their exposure to UK tax.
The FIG regime represents an attractive-short term benefit for new arrivals but the four-year period does not compare favourably with the duration of similar schemes on offer from other jurisdictions.
The requirement to identify and report in annual tax returns the FIGs not chargeable to tax is an unwelcome administrative burden. It will also provide HMRC with significantly more detail of individuals’ offshore assets and investments than was previously available under the remittance basis regime.
The TRF represents a welcome transitional relief for those non-doms who have previously claimed the remittance basis and do not qualify for the FIG regime - particularly those who may be running low on clean capital, and those who anticipate remaining UK resident in the near future.
It will work differently than most advisers had originally anticipated. Rather than just remitting pre-6 April 2025 FIGs in one of the three years to 2027/28 and paying the reduced amount of tax for that year, it is instead necessary to designate and pay tax at the reduced rate on amounts to remit, which can then be remitted at any time as required. This offers a certain amount of flexibility, both in terms of spreading the tax cost over the three TRF years and the ability to take advantage of the lower rates of tax on sums intended to be remitted after 5 April 2028.
It appears that 5 April 2017 has been selected to align with the rebasing date for those who became deemed domiciled at that date. However, as the rebasing facility is only available for assets that have been held for at least eight years at 6 April 2025, it will be of relatively limited application.
The alignment of OWR with the FIG regime is sensible and extends eligibility for the relief for a further year. The simplification of the operation of the relief is also welcome, as is the ability to receive the earnings relating to overseas workdays in the UK with no liability to tax. However, we can see no good reason why the relief should be capped annually.
Where it is possible to control the date of commencement of the UK employment, consider delaying this until early in a new tax year to maximise four-year FIG period.
The original proposals mentioned only 10 years of residence with a 10-year tail, so the rather more nuanced approach now introduced offers some welcome flexibility. However, it still brings non-UK assets into charge to IHT at a much earlier stage than under the previous non-dom regime (after 10 years rather than 15) and generally gives a longer tail.
Individuals who have left the UK permanently will now have certainty that their non-UK assets will be outside the scope of IHT on expiry of the tail, which was often not the case under the previous domicile test.
It remains to be seen how easy will it be for HMRC to monitor continuing liability to IHT for individuals who have left the UK permanently – particularly those with a long tail.
Despite lobbying in summer 2024, it was always unlikely that the existing trust protections would survive the change to a Labour government.
Again, the loss of IHT trust protections was always unlikely to survive the change to a Labour government, although the exclusion of existing trusts from the double-taxation resulting from the GWROB rules is a welcome relief. The application of the excluded property rules to tax 10-year anniversaries and exits requires careful monitoring and adds a further layer of compliance. However, older settlors may think that one or possibly two 10-year charges at a maximum of 6% is a price worth paying to avoid IHT at 40% on death.
Individuals affected by the changes will have been taking stock of their affairs and considering how they might restructure in readiness for the new regime. Non-doms who remain in the UK will be navigating several sets of rules which adds complexity and cost. Others have left with the intention of managing their days carefully, so they break UK tax residence. Maintaining real time records is vital to ensure non-residence status can be maintained and evidenced in the event of a HMRC enquiry.
It is fair to say exposure to UK IHT on worldwide assets is of grave concern to many so considering the application of IHT tax treaties is now more relevant than ever in trying to minimise exposure.
The attractiveness of the FIG regime to new arrivals remains to be seen, particularly in a relatively short period of four years and the complexity associated with making a claim and level of disclosure required under self assessment.
Will the UK perhaps become a short-term tax haven for those wishing to undertake transactions free of tax?
This note is intended as an overview of the new legislation and does not constitute advice. For detailed advice on the application of the new regime to your own particular circumstances please get in touch with your usual Crowe contact.