UK Non-Dom Abolition 2025: What Former Non-Doms Need to Do Now

The UK non-dom abolition 2025, effective April 6, 2025, ended the remittance basis of taxation that internationally mobile individuals had relied on for generations. In its place, Labour rolled out a residence-based system that taxes all long-term UK residents on their worldwide income and gains. The practical implications are sweeping, and the window to act on several transitional reliefs is already closing.

The numbers tell the story. Roughly 10,800 millionaires left the UK in 2024, and projections for 2025-2026 suggest up to 16,500 more departures, representing an estimated $91.8 billion in liquid wealth leaving the country. Some commentators note that this is less than 1% of the UK's total millionaire population. Technically true, but the individuals leaving tend to be founders, capital allocators, and entrepreneurs whose businesses generate outsized tax revenue and employment. Their departure creates a cascading loss of future receipts that the Treasury will feel for years.

Here is what actually happened, what relief mechanisms still exist, and what you need to do right now.

What Changed April 6, 2025

The core shift is straightforward: common law domicile no longer determines your UK tax liability. Under the old system, if you were resident in the UK but domiciled elsewhere, you could elect the remittance basis. Foreign income and gains stayed outside HMRC's reach as long as you kept them offshore. For decades, this enabled enormous offshore wealth accumulation.

The new framework relies exclusively on the Statutory Residence Test (SRT) to establish tax liability. All UK residents are now taxed on an arising basis on their worldwide income, unless they qualify for the new FIG regime or one of the transitional reliefs.

The SRT is mechanistic and unforgiving. You are automatically UK resident if you spend 183 days or more in the UK during the tax year, if your only home is in the UK for at least 91 days, or if you work full-time in the UK. If none of those automatic tests apply, HMRC runs a "sufficient ties" test that evaluates family connections, available accommodation, UK work, and previous presence:

• 16 to 45 UK days (previous resident): At least 4 ties needed for UK residency
• 46 to 90 days: At least 3 ties
• 91 to 120 days: At least 2 ties
• 121 to 182 days: At least 1 tie

To soften the transition, the government enacted a capital gains tax rebasing provision. If you were non-domiciled before 2025/2026 and claimed the remittance basis in any year between 2017/2018 and 2024/2025, you can rebase personally held foreign capital assets to their value on April 5, 2017. The catch: you must have owned the asset on that date, the asset must have been outside the UK throughout March 6, 2024 to April 5, 2025, and you must dispose of it on or after April 6, 2025. This eliminates pre-2017 gains but offers nothing for assets acquired after that date.

Legacy Business Investment Relief (BIR), which let non-doms remit funds tax-free for qualifying commercial investments, is also being phased out entirely by April 2028.

FIG Regime UK: The 4-Year Window

To keep London competitive as a global financial hub, the government paired the non-dom abolition with the Foreign Income and Gains (FIG) regime. Think of it as a four-year full exemption for eligible new arrivals.

The primary eligibility criterion: you must have been a non-UK tax resident for at least 10 consecutive tax years immediately before arriving. Domicile, nationality, and citizenship are irrelevant. A UK-born citizen who lived abroad for a decade qualifies just as easily as a foreign national relocating for the first time.

During those first four tax years, qualifying individuals who claim the FIG regime receive 100% relief from UK income tax and capital gains tax on all foreign-source income and gains. And here is a key improvement over the old remittance basis: funds sheltered under the FIG regime can be freely remitted, spent, or invested within the UK without triggering any retroactive tax charge.

There are costs. Claiming the FIG regime means forfeiting your income tax personal allowance (currently £12,570) and your capital gains tax annual exempt amount. The four-year clock runs continuously from your first year of residence. If you become non-resident in year two and return in year four, year three is permanently lost. Split years count as a full year. When the clock expires, you immediately transition to full arising basis taxation on worldwide assets at UK marginal rates.

The FIG regime also intersects with Overseas Workday Relief (OWR), which matters significantly for globally mobile executives and fund managers. OWR is now aligned with the four-year FIG window (previously three years), and the old requirement to keep overseas earnings strictly offshore has been abolished. However, effective April 6, 2026, there is a cap: OWR is limited to the lower of 30% of qualifying employment income or £300,000 per tax year. For anyone earning multi-million-pound compensation packages, this significantly limits the benefit. Transitional protections do exist for individuals who claimed the remittance basis before April 2025 and are still within their first four years.

Temporary Repatriation Facility

The temporary repatriation facility is the single most valuable planning exercise available to former non-doms right now, full stop. Over a century of the remittance basis resulted in enormous sums stockpiled offshore. The government recognized that taxing all of that at 45% income tax or 24% CGT would ensure it never came back to the UK, so they created a three-year window with discounted flat rates:

• 2025/2026 and 2026/2027: 12% flat rate
• 2027/2028: 15% flat rate

Once you pay the TRF charge, the designated funds are permanently cleansed. You can remit them to the UK at any point in the future, even decades later, without any further tax.

The TRF is particularly powerful for dealing with mixed funds. Under the old rules, remitting from an offshore account containing a mix of clean capital, untaxed income, and untaxed gains triggered punitive statutory ordering rules that forced the most highly taxed elements out first. The TRF changes that dynamic entirely. Designated amounts get statutory priority within a mixed fund. You designate a portion, pay 12%, and spend those funds in the UK without triggering marginal rates on the remaining untaxed balance.

Three traps worth flagging.

First, the TRF extends to non-liquid assets like overseas real estate, art, or private equity. You can designate the historic income used to purchase the asset. But upon future sale, only the specific amount designated is remittance-free. Any subsequent appreciation remains subject to standard CGT rates.

Second, no foreign tax credits are permitted against the TRF charge. If you previously disposed of an asset in Italy at 26% CGT and kept the proceeds offshore, electing into the TRF means paying 12% on top of the 26% already paid. In that scenario, standard double taxation relief upon normal remittance is mathematically far more efficient. This requires careful modeling on a case-by-case basis.

Third, you must pay the TRF charge using clean capital. Paying with untaxed offshore funds triggers a fully taxable remittance and defeats the purpose entirely.

Trust Protections Lost

For decades, the standard wealth preservation playbook for non-doms involved settling non-UK assets into offshore, settlor-interested trusts before becoming deemed-domiciled under the old 15-year rule. Income and gains rolled up entirely free of UK tax until a distribution was made to a UK resident beneficiary. As of April 6, 2025, those protections were completely dismantled.

If you are a UK-resident settlor and do not qualify for the four-year FIG regime, you are now immediately taxable on all income and gains generated within the trust on an arising basis. The trust no longer provides any deferral. And the mechanics are harsh: you are taxable on the gross income of the trust before deducting standard trust expenses. Trustee fees, corporate director fees, portfolio management fees -- all explicitly denied as deductions. This artificially inflates your taxable base and significantly increases the effective tax rate on the net economic yield.

The interaction with the TRF is highly specific. Beneficiaries can use the TRF's 12% or 15% rates on capital distributions matched to pre-April 2025 foreign income and gains. But the TRF cannot be applied to standard income distributions received from offshore settlements on or after April 6, 2025. Trustees need to conduct exhaustive, multi-year tracing exercises to identify unmatched historic capital, and the administrative burden alone is substantial.

New onward gifting rules have also been introduced: gifts made to UK residents from non-residents who recently received trust distributions are now taxed as if the UK resident received the distribution directly from the trust. That workaround is closed. For a deeper look at offshore trust structures and their tax implications, we have covered the mechanics in detail.

IHT Changes

This is where the UK non-dom changes bite hardest. Inheritance tax, levied at 40% on chargeable estates, has shifted from a domicile-based system to a purely residence-based test.

The new metric is the Long-Term Resident (LTR) test. You become an LTR if you have been UK tax resident for at least 10 out of the 20 tax years preceding a chargeable event (death, or transfer into a relevant property trust). Once you cross that threshold, your worldwide assets are fully subject to UK IHT regardless of where they sit. This effectively halves the previous 15-year runway that non-doms relied on for international estate planning.

The IHT tail is the part that keeps advisors up at night. Leaving the UK does not immediately extinguish your global IHT exposure. Former residents face a staggered tail period:

• 10 to 13 years of UK residence: 3-year IHT tail after departure
• 14 years: 4-year tail
• 15 years: 5-year tail
• 16 to 19 years: Scales up by 1 year annually
• 20+ years: 10-year tail (maximum)

Your LTR status only fully resets after 10 consecutive tax years of non-UK residence. Even a brief, accidental period of resumed UK residence can reset the 10-year LTR clock, dragging worldwide assets back into the 40% net.

The old Excluded Property Trust (EPT) shelter, which permanently protected non-UK assets settled by a non-domiciled individual from IHT, has been eradicated. Trust chargeability now fluctuates dynamically based on the settlor's LTR status, with periodic 10-year anniversary charges of up to 6% and proportionate exit charges. If a settlor who meets the LTR criteria can benefit from the trust, non-UK assets are treated as part of their personal estate at death, attracting the full 40%.

Agricultural Property Relief and Business Property Relief are now capped at a combined £2.5 million per individual from April 2026. Value above that threshold receives only 50% relief, resulting in an effective 20% IHT rate on the excess. And from April 2027, most unused pension funds and death benefits are drawn into the chargeable estate, potentially pushing effective rates to 76% on the pension component.

Where Non-Doms Are Moving

With the remittance basis gone, offshore trusts exposed, and the IHT tail stretching up to a decade, capital flight from the UK has moved from contingency planning to active execution. Five destinations dominate the advisory landscape in 2026:

• Italy: The flat tax regime costs EUR 300,000 per year, plus EUR 50,000 per dependent. It completely exempts foreign income, dividends, wealth tax on foreign assets, and Italian inheritance tax on non-Italian assets. Duration: 15 years.
• UAE (Dubai): Zero personal income tax, zero CGT, zero inheritance tax. The Golden Visa requires a minimum AED 2,000,000 (roughly GBP 400,000) property investment for a 10-year renewable visa.
• Switzerland: The forfait fiscal (lump-sum taxation) calculates tax based on lifestyle expenses rather than worldwide income. Effective liability can be negotiated to roughly CHF 100,000 or above depending on the canton. No CGT on movable private property.
• Portugal: The IFICI regime (NHR 2.0) provides a flat 20% rate on qualifying Portuguese employment income. Most foreign passive income remains exempt. Requires 5 years of prior non-residence.
• Spain: The Beckham Law offers a flat 24% on Spanish employment income up to EUR 600,000 and fully exempts foreign income and gains. A 2025 Supreme Court ruling extended the wealth tax shield to non-residents.

Each comes with its own qualifying requirements and anti-avoidance considerations. For a comparison of how territorial tax countries structure their systems, that context is essential before choosing a destination.

What the Non-Dom Tax UK 2026 Landscape Requires

The non-dom tax UK 2026 environment demands immediate, structured action. Here is what you should be doing now:

1. If you are leaving the UK, execute a clean break under the SRT. Audit your physical day counts meticulously (presence at midnight counts as a UK day). Sever specific ties: sell or lease out UK accommodation, resign from UK directorships, manage the presence of minor children in UK schools. Remember that even a brief period of resumed UK residence can reset the 10-year LTR clock. Our residency planning services can map out the SRT mechanics for your specific situation.
2. Review all offshore trust structures urgently. If you have exceeded the four-year FIG regime window and are now taxed on an arising basis, maintaining a complex offshore trust may no longer be economically viable given the administrative costs and denied expense deductions. If you are approaching the 10-year LTR threshold, consider winding up the trust and distributing assets to non-UK resident beneficiaries before that date.
3. Optimize the temporary repatriation facility. Identify and quantify all historic unremitted foreign income and gains across every global account. The TRF election deadline for 2025/2026 is January 31, 2028, but cash flow requirements for the 12% charge demand immediate liquidity planning. Prioritize designating heavily tainted mixed funds.
4. Elect for CGT rebasing. If you held foreign assets on April 5, 2017 and qualify, this eliminates pre-2017 gains. The modeling here is granular and requires professional input.
5. Model the TRF against standard double tax relief. For assets where you have already paid significant foreign tax, the TRF's prohibition on foreign tax credits can produce worse outcomes than a standard remittance. Run the numbers before designating.
6. Plan your destination, not just your departure. Each jurisdiction has specific qualifying periods, substance requirements, and anti-avoidance rules. Getting the UK exit right is only half the equation.

The UK non-dom abolition 2025 fundamentally changed the calculus for every internationally mobile individual with UK ties. The transitional reliefs -- the FIG regime, TRF, and CGT rebasing -- are real and valuable, but they are time-limited and technically demanding. Those who act methodically and early will preserve the most optionality. Those who delay will find the available mechanisms narrowing with each passing tax year.