
The pre-April 26th position (“The Golden Era”)
Let’s imagine you’re a wealthy Russian oligarch with a savvy lawyer. The year is 2022. You run a lucrative bio-chemicals production company in Eastern Russia, but spend most of your days in West London with your wife and daughter. Through your time spent in the Isles, you’ve scooped up a British passport and residency for you and your family.
Even if you were a resident, for many legal purposes, your ‘domicile’ status is distinct and pivotal. A ‘domicile’ is a person’s ultimate legal home in which they have the most enduring connection. One’s domicile is usually established at birth, usually following their father’s status (domicile of origin). Alternatively, one can voluntarily choose their domicile, which requires both physical residence in the country, and an intention to reside there indefinitely (animus manendi). Courts can infer the latter through a home purchase, relocating family, will/burial wishes, community ties etc. Persistent residence for 15 of the last 20 years also confers a ‘deemed domicile’ status (ITA 2007 s.835BA). Non-domiciles are residents of the UK without any domicile status.
If you were deemed a ‘non-domicile’, you could apply for the remittance basis for tax. This means foreign income and gains, such as dividends from your biochemicals company, were taxed in the UK only to the extent that they were remitted to the UK. Per s809L of the Income Tax Act 2007 (ITA 2007), ‘remitted’ means that the funds were brought to, received or used in the UK, or were used overseas for a UK benefit (e.g. transacting with a Dutch company for a new coffee table for your Belgravia flat). Conversely, any UK-source income and gains (i.e. investments through a UK trading account) were taxed as they arose in the normal way.
However, if you chose to apply for the remittance basis, you would lose your entitlement to the income tax personal allowance and capital gains tax for the tax year the claim was made (ITA 2007, s809B). Furthermore, if you were a tax resident for the last 7 out of the previous 9 tax years, it would cost you £30,000 to claim the remittance basis per the Remittance Basis Charge (RBC), increasing to £60,000 for an individual with residency of more than 12 years.
Let’s imagine you’re recouping £5,000,000 from dividends from your company:
- Without a remittance claim, you’d pay 39.35% tax on both your domestic and foreing income, amounting to a handsome £1,967,500 on your dividends alone.
- With a remittance claim, as long as you don’t remit the dividend income to the UK, you’d only pay UK-source income. Depending on the length of existing citizenship, you’d pay £0/£30k/£60k for the RBC, a saving of £1.91-£1.97m per tax year.
- If the foreign dividends are remitted, e.g. £200,000 for UK spending, the remitted portion is taxed at 39.35%, amounting to £78,700, on top of the RBC.
It’s evident why the previous rules were so desirable for wealthy foreign individuals, with savings of millions of pounds or more. This advantage is exaggerated when accounting for the clandestine use of trusts for tax-benefits, as explored later.
But then, everything changed on the 6th of April 2025: the ‘Finance Act 2025’ came into effect with stark implications for foreigners bringing their funds into the UK.
April 6th 2025 changes
From 6 of April 2025, the non-domicile regime has been abolished and replaced with a new residence-based test, the Foreign Income and Gains (FIG) regime. This means resident non-domiciles will not be able to elect only UK-source income and gains for taxation; all overseas income and gains will be taxed as they arise, albeit with certain caveats. Effectually, this introduces a global tax for all UK residents.
How this test interacts with individuals depends on the amount of time they’ve been a resident in the UK.
Individuals who arrive in the UK after being non-resident for at least 10 prior tax years may elect to not be taxed on foreign income and gains under the FIG regime, regardless of whether they are remitted to the UK or not. This is available for the first 4 consecutive years of residence.
If an individual leaves the UK temporarily during the 4-year period in which they qualify for the FIG regime, they can still make a claim on returning, but only for the balance of that original 4-year window. For example, someone who is UK tax resident in 2025–26, non-UK resident in 2026–27, and then UK tax resident again from 2027–28 onwards may use the FIG regime in 2025–26, 2027–28 and 2028–29; they will not, however, receive a full four tax years of relief.
Anyone already resident to the UK as at April 6th 2025 for less than 4 years may make a claim under the FIG regime for the balance of the four year period. For example, if Bobby was a UK resident for 3 years on April 6th, he would be able to claim 1 year under the FIG regime.
If an individual arrives in or leaves the UK midway through a tax year, they may, subject to specific conditions, qualify for split-year treatment, dividing that year into a UK-resident part and a non-UK-resident part. For FIG purposes, any split year counts as a full year of UK residence. Resultantly, the period over which the FIG regime can be used may be less than four complete tax years.
TLDR: From 6 April 2025, the UK abolishes the non-dom regime and introduces the residence-based Foreign Income & Gains (FIG) regime, under which UK residents are generally taxed on worldwide income and gains as they arise. New arrivals who were non-UK resident for at least the previous 10 tax years can elect to exclude foreign income and gains for their first four consecutive years of UK residence (remittances don’t matter). If you’re already UK-resident on 6 April 2025 but have fewer than four years’ residence, you can claim the remaining balance up to four years. Leaving and returning during the window doesn’t reset the clock—you only keep the unused balance. For FIG purposes, any split year counts as a full UK-resident year, so in practice the relief may cover fewer than four complete tax years.
How to claim for relief? (i.e. the nitty gritty)
A claim must be made in the individual’s self-assessment tax return for each tax year in which they wish to use the relief. It must be submitted no later than 31 January in the second tax year following the year to which the claim relates. For example, a claim for 2025–26 must be filed on or before 31 January 2028.
Claims in respect of foreign income and foreign gains are separate. A taxpayer may claim relief on foreign income, on foreign gains, or on both. Claims are also made on a source-by-source basis, so a taxpayer can claim for some sources of foreign income or gains and not others, which is useful where a claim could affect the tax position of a particular source in another jurisdiction.
Anyone opting to be taxed under the FIG regime must quantify the foreign income and gains covered by the claim and include those amounts in their self-assessment return. Broadly, from 6 April 2025 all UK-resident individuals will be required to report their worldwide income and gains in their returns. Any foreign income losses or foreign capital losses arising in a tax year for which the individual is claiming under the FIG regime are not deductible.
Electing into the FIG regime also means forfeiting the income tax personal allowance (£12,570 for 2024–25) and the CGT Annual Exempt Amount (£3,000 for 2024–25). Both allowances are lost regardless of whether the claim is only for foreign income, only for foreign gains, or only for employment income using Overseas Workday Relief. This mirrors the historic remittance-basis rules and may make the regime unattractive for taxpayers with modest foreign income and gains.
Furthermore, there is no charge for making a FIG claim, distinguishing it from the remittance basis.
Transitional measures?
For taxpayers previously qualified for the Remittance Basis, the government has introduced some measures to mitigate the damage caused by the April 6th changes.
Rebasing
Firstly, Starting 6 April 2025, individuals who have previously claimed the remittance basis may rebase personally held foreign capital assets to their 5 April 2017 market value.
“Rebasing” means resetting an asset’s UK CGT base cost to its 5 April 2017 market value so that, on a disposal on or after 6 April 2025, only growth since that date is within UK tax (assuming the qualifying conditions below are met). It sits alongside FIG: gains realised within an individual’s four-year FIG window are exempt in any case (even if remitted), so a rebasing election is not needed for those disposals.
Rebasing is advisable because it reduces UK CGT exposure on post-FIG disposals (or in any year FIG is not claimed/available), can simplify record-keeping, and may align better with foreign tax calculations, though it should generally be used only where the 5 April 2017 value is at least the original cost.
To qualify for rebasing relief, all of the following must be satisfied:
- The individual must not have been UK-domiciled or deemed-domiciled at any time before the 2025–26 tax year.
- The individual must have claimed the remittance basis in at least one tax year from 2017–18 through 2024–25 (inclusive). Any year in which the individual qualified automatically for the remittance basis does not count.
- The individual must have owned the asset on 5 April 2017 and must dispose of it on or after 6 April 2025.
- The asset must have been situated outside the UK throughout 6 March 2024 to 5 April 2025, subject to specified exceptions.
Care is required when remitting proceeds from disposals made before 6 April 2025. Where foreign income or gains (taxable under the Remittance Basis rules) were used to acquire the asset, bringing the proceeds to the UK can trigger a UK tax charge. The applicable rate will depend on whether the funds fall within the Temporary Repatriation Facility (as explained below).
Temporary Repatriation Facility
A Temporary Repatriation Facility (TRF) will be available to individuals who have previously claimed the remittance basis, allowing them to bring pre-5 April 2025 FIG to the UK after 6 April 2025 at a reduced rate for three tax years. To use the TRF, taxpayers must designate the FIG to which the relief applies in their self-assessment tax return.
Designations made in 2025–26 and 2026–27 will be taxed at a flat 12%, rising to 15% for designations in 2027–28. The TRF charge is payable on designation, and no further tax is due when the designated FIG is actually remitted; taxpayers therefore may designate amounts they plan to remit in future years, and they do not need to declare remittances of already-designated FIG in those later years.
Designations may cover FIG invested in overseas assets, so assets need not be sold to benefit from the TRF. Designations may also be made for investments that have previously qualified for Business Investment Relief (BIR). In both cases, no further tax applies to the designated sum if the asset is later sold and the proceeds are remitted to, or retained in, the UK.
The TRF is also available to UK resident individuals who receive a benefit from an offshore trust structure during the same time period, where the benefit is matched to pre-6 April 2025 FIG. This should mean easier access to trust income and gains which previously may have been subject to punitive tax rates on extraction from trusts.
Finally, the amount of FIG designated under the TRF must be net of any foreign tax paid. No credit can be claimed for foreign tax against the TRF charge.
Business Investment Relief
Business Investment Relief (BIR) lets individuals who claimed the Remittance Basis remit foreign income and gains into the UK without a UK tax charge, as long as the money is used for a qualifying investment.
From 6 April 2028, one cannot claim BIR on new investments. Existing BIR investments will keep their BIR protection until a potentially chargeable event happens, such as a disposal. Under the current rules, if such an event occurs, you can avoid a taxable remittance by taking offshore the foreign income and gains that were originally invested.
As noted above, FIG used in qualifying BIR investments can also be designated under the TRF. If designated, no further tax will be due on that amount if the investment is later disposed of or another potentially chargeable event occurs.
Conclusion
In short, the “golden era” of remittance-basis planning is over: from 6 April 2025 the UK moves to worldwide taxation under the FIG regime, with only a narrow four-year window for recent or new arrivals and annual claims that forfeit key allowances. Transitional options soften the shift: asset rebasing to 5 April 2017 can reduce future CGT, a time-limited TRF offers discounted taxation on pre-change foreign income and gains, and BIR remains only for existing investments before closing to new ones in 2028. For anyone affected, the task now is disciplined planning, auditing sources of foreign income and gains, modelling the cost of lost allowances, considering TRF designations, and revisiting trust and investment structures, to navigate a system designed to tax UK residents on a global basis.
It’s evident that such changes are in an effort to bring more wealth held by foreigners to British soil, instead of in offshore accounts. The effect so far? A massive wealth exodus: Henley & Partners projects the UK will lose ~16,500 millionaires in 2025, the biggest outflow globally, with movers carrying ~$91.8bn in investable wealth. It’s evident then that manipulation of tax laws should have close regard to wider socio-economic and political trends, rather than in a foolhardy attempt to strong-arm economic change.
