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The UK non-dom regime ended on 6 April 2025, and Dubai is the natural destination for much of the wealth that left with it. But moving does not switch off UK inheritance tax. Once you have been UK resident for 10 of the last 20 years, your worldwide estate stays in the 40% net for a three-to-ten-year tail after you go.
If you were a UK non-dom, or advising one, the headline change is real and it has already happened. On 6 April 2025 the remittance basis and the centuries-old domicile system were abolished. The UK now taxes on residence, not on where your roots are. For a lot of internationally mobile families, the response has been to move, and Dubai has been the single most common destination: no personal income tax, no capital gains tax, a stable base, and a short flight back to London.
That move is legitimate and, done properly, it works. What does not work is the version sold in the panic after the Finance Act 2025: the idea that buying a place in Dubai and getting on a plane switches off your UK tax exposure the moment you land. It does not, and the gap between that belief and the law is widest, and most expensive, on inheritance tax.
Here is the part the relocation pitch skips. UK inheritance tax used to hinge on domicile, a slippery concept you could argue about. It now hinges on a number: how many of the last 20 years you have been UK tax resident. Cross the line and your worldwide estate, everything you own anywhere, sits inside the 40% UK inheritance tax net. And leaving does not reset that number to zero. The exposure follows you out of the country for years.
This guide explains, in plain terms, when you become a long-term UK resident for inheritance tax, how long the exposure lasts after you leave, what "worldwide estate" actually catches, the separate pension trap that starts in April 2027, and the income-side facility that departing non-doms use on the way out. The detailed, statute-by-statute version sits in the guide to the long-term resident IHT tail.
The distance between "move to Dubai and you are out" and the actual rules is wide enough to set out plainly.
None of this makes Dubai the wrong move. It makes the timing and the structure the things that matter. The rest of this guide takes each line in turn.
The old system asked where you were "domiciled", a question of long-term intention and family origin that could be argued either way and that HMRC frequently contested. The new system, in force from 6 April 2025, replaces all of that with a residence count under section 6A of the Inheritance Tax Act 1984.
The rule is simple to state. You are a long-term UK resident, and your worldwide estate is within UK inheritance tax, once you have been UK tax resident for at least 10 of the 20 tax years immediately before the relevant year. Residence for each year is decided by the Statutory Residence Test, the same day-and-ties test that governs your income tax position, covered in the guide to moving to Dubai from the UK.
Two points catch people out. First, the years do not have to be consecutive: 10 separate years inside a 20-year window are enough. Someone who lived in the UK for six years, left for several, and came back can tip over the line without ever having stayed for a continuous decade. Second, and more important for planning, the trigger is 10 years, not 15. Many families calibrated their old exit plans around the 15-year deemed-domicile mark. Under the new rules the inheritance tax net closes five years earlier than that. A plan built on the old 15-year calendar is now late.
This is the heart of the misunderstanding. Becoming non-resident does not immediately remove your worldwide estate from UK inheritance tax. Once you are a long-term UK resident, the status carries on after you leave, for a "tail" period that depends on how long you were resident.
The schedule, applied by HMRC, works like this:
So the floor is three years and the ceiling is ten, and between them the tail grows by one year for each extra year you spent in the UK beyond 13. The practical message is blunt: if you were UK resident for, say, 17 years and you move to Dubai, your worldwide estate stays exposed to 40% UK inheritance tax for seven more tax years. If you die during that window, wherever you are living, the charge can apply to everything you own.
The tail is also measured in tax years, and it starts the tax year after you cease to be resident, so the exact date you leave within a tax year matters. There is no election to shorten it and no way to buy your way out. It runs automatically.
The one piece of good news is that the tail rewards leaving earlier. Departing before you ever hit the 10-year mark means no long-term resident status and no tail at all on your worldwide estate. Departing between years 10 and 13 locks in the minimum three-year tail. Every year you stay beyond 13 adds a year to the exposure you carry out of the country.
"Worldwide estate" is exactly what it sounds like: while you are a long-term UK resident (including through the tail), UK inheritance tax can reach assets anywhere in the world, not just your UK property. In practice three different situations are tested slightly differently, and it is worth knowing which is which.
For some corridor families there is a genuinely different answer hiding in old treaties. The UK has pre-1975 estate tax treaties with India, Pakistan, Italy and France that still allocate the taxing right by domicile rather than residence. A family with a long-standing domicile of origin in one of those countries may keep protection that the new domestic rules would otherwise remove. That is a specialist check, not a general rule, but it is exactly the kind of point that the standard relocation advice misses.
The full mechanics of all three categories, the trust timing, and the treaty positions are in the deep guide to the long-term resident IHT tail.
There is one more exposure that the tail does not cover, and it is the one most likely to be missed because it points the opposite way. From 6 April 2027, under the Finance Act 2026, most unused UK pension funds and pension death benefits fall inside the inheritance tax estate. Until now a UK pension was the cleanest thing to leave behind: it passed on death outside the estate, and before age 75 it could pass free of income tax too. That ends for deaths on or after 6 April 2027.
For someone who has moved to Dubai, the sting is in how the pension is taxed after the move. The worldwide estate leaves UK inheritance tax when the residence tail expires. A UK pension does not, because it is taxed by reference to where the scheme is established, not by reference to how long you have been gone. A pension held in a UK-established scheme, the typical UK SIPP or workplace pension, stays inside UK inheritance tax even after you have stopped being a long-term UK resident and the rest of your worldwide estate has dropped out.
So the founder who plans the whole exit around the three-to-ten-year tail, and assumes that once it runs out the UK is finished with them, has missed the pension. The tail governs the worldwide estate; the pension is governed by the scheme's location, and a UK-based pension can sit in the UK IHT net long after the tail has gone. Moving the pension offshore is rarely the fix: while you are still a long-term UK resident it changes nothing, and the transfer itself can trigger a separate 25% overseas transfer charge. The full analysis is in the guide to UK pensions in the IHT estate from April 2027.
One genuine point of confusion deserves its own section, because people moving out keep reaching for the wrong tool. When the non-dom regime was replaced, the UK introduced a 4-year Foreign Income and Gains regime. It is generous: a qualifying new arrival pays no UK tax on foreign income and gains for their first four years. But it is for people coming to the UK after at least ten years away, not for people leaving. If you are moving from the UK to Dubai, the FIG regime is not your tool.
What a departing former non-dom uses for the income side is the Temporary Repatriation Facility. It lets you bring foreign income and gains that arose before 6 April 2025, and were left offshore under the old remittance rules, into the UK at a reduced rate: 12% for 2025/26, 12% for 2026/27, then 15% for 2027/28, before the window closes on 5 April 2028. For someone with a large stockpile of pre-2025 unremitted income, designating it under the facility before the window shuts is often the single most valuable thing to do on the way out. The detail is in the guide to the Temporary Repatriation Facility.
The two clocks do not line up, and that is the point to plan around. The Temporary Repatriation Facility closes on 5 April 2028. The inheritance tax tail can run for up to ten years after you leave. The income clean-up and the inheritance tax exposure are different problems on different timetables, and a good exit handles both rather than assuming one fixes the other.
A move to Dubai protects wealth cleanly when it is timed and structured around these rules, rather than treated as an instant switch. The clearest wins come from acting before the thresholds rather than after.
A short set of checks covers most of the exposure:
Because so many of these threads converge on the date you leave, the cleanest exits are planned a full tax year ahead. The step-by-step sequencing is set out in the pre-exit year checklist for moving from the UK to the UAE.
Not straight away. If you are a long-term UK resident, meaning UK tax resident for 10 of the previous 20 tax years, your worldwide estate stays within UK inheritance tax at 40%, and that status continues for a tail of three to ten years after you leave. Moving to Dubai eventually takes your worldwide estate out of UK inheritance tax once the tail expires, but it does not happen on the day you land, and a UK pension can stay in the net even longer.
It is the test that replaced domicile for UK inheritance tax from 6 April 2025. Under section 6A of the Inheritance Tax Act 1984, you are a long-term UK resident once you have been UK tax resident for at least 10 of the 20 tax years immediately before the relevant year. While you hold that status, your worldwide estate is within UK inheritance tax.
Between three and ten tax years, depending on how long you were resident. It is three years if you were UK resident for 10 to 13 years, and it rises by one year for each additional year of residence, up to a maximum of ten years for someone resident for 20 years. The tail runs automatically from the tax year after you cease to be UK resident, and there is no way to shorten it.
Yes. The Finance Act 2025 abolished the remittance basis and the domicile-based system from 6 April 2025. UK tax is now based on residence. For inheritance tax, domicile is replaced by the long-term resident test; for income and gains, the remittance basis is replaced by the arising basis with a 4-year relief for new arrivals.
For inheritance tax, yes. The old rule treated a long-stay non-dom as deemed UK domiciled after 15 of 20 years. The new long-term resident test brings the worldwide estate into UK inheritance tax after just 10 of 20 years. Anyone who planned an exit around the 15-year mark should recheck, because the net now closes five years earlier.
Not for deaths on or after 6 April 2027. From that date most unused UK pensions fall inside the IHT estate under the Finance Act 2026. A pension in a UK-established scheme is taxed on the basis of where the scheme is, so it can stay within UK inheritance tax even after your residence tail has ended and the rest of your worldwide estate has dropped out.
The Foreign Income and Gains regime lets a qualifying new arrival to the UK pay no UK tax on foreign income and gains for their first four years of residence, provided they were non-UK resident for the previous ten years. It is a tool for people moving to the UK, not for people leaving it, so it does not help someone relocating from the UK to Dubai.
It is a time-limited facility that lets former remittance-basis users bring foreign income and gains that arose before 6 April 2025 into the UK at a reduced rate, 12% in 2025/26, 12% in 2026/27 and 15% in 2027/28, before it closes on 5 April 2028. It is the main income-side tool for departing former non-doms, and it runs on a different timetable from the inheritance tax tail.
The non-dom regime is gone, and Dubai is a sound destination for the wealth that followed it out. But the new system swapped a slippery idea for a hard number, and the number does not fall to zero on the day you leave. The estate, the pension, and the pre-2025 income each run on their own clock, and a move that ignores them simply carries the exposure abroad.
A UAE Golden Visa gives you the right to live in Dubai. It does not, on its own, make you a UAE tax resident, and it gives you no protection from HMRC. Tax residency is a separate test run by the Federal Tax Authority, and a treaty certificate needs 183 days in the country, not just a visa in your passport.
Read AnalysisThe pre-exit year is engineered backwards from the SRT exit date under Schedule 45 Finance Act 2013. TRF designation, 5 April 2017 rebasing, the section 6A IHTA 1984 tail, UAE 90-day residence, the Golden Visa property route, CMC reconstitution, QFZP substance, and DIFC will registration converge on one date.
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