The UK Statutory Residence Test Explained
The UK Statutory Residence Test — usually shortened to the SRT — is the rulebook HMRC uses to decide whether you are UK tax resident in any given tax year. It came into force in April 2013 (Schedule 45 of the Finance Act 2013, with operational detail in HMRC’s RDR3 guidance), replacing a system based on case law and HMRC practice that produced a great deal of grey area. The SRT is mechanical: it applies a sequence of objective tests in order, and the answer is the answer. There is no room for negotiation, and equally no room for HMRC to take a view about what feels right.
For founders relocating from the UK to Dubai, the SRT is the test you need to satisfy to confirm — to yourself, your accountant, and HMRC if asked — that you have genuinely left the UK tax net. Getting it right is straightforward in principle and unforgiving in detail. This article walks through how the test actually works, where founders most often go wrong, and what the practical day-by-day implications are for someone planning a UK→UAE move.
How the SRT works in outline
The SRT runs in three stages, in strict order. You apply each stage in sequence, and the first one that gives you an answer is the answer. You do not pick the test you prefer.
Stage 1 — Automatic overseas tests. If you meet any of these, you are non-UK resident for the tax year, full stop.
Stage 2 — Automatic UK tests. If you don’t meet a stage-1 test, but you meet any of these, you are UK resident for the tax year, full stop.
Stage 3 — Sufficient ties test. If neither set of automatic tests resolves your position, residence is decided by a matrix that combines your UK day count against the number of UK ties you have.
Most relocating founders aim to pass an automatic overseas test in stage 1 — most often the third automatic overseas test (full-time work overseas) — and never have to engage with the sufficient ties test at all. The founders who get caught are usually the ones who try to land in the sufficient ties matrix and miscount their days or forget about a tie they were carrying.
Stage 1 — the automatic overseas tests
There are three of these. You only need to meet one.
First automatic overseas test
You spent fewer than 16 days in the UK in the tax year, and you were UK resident in one or more of the previous three tax years. This is the test for someone who has very recently left and is keeping their UK presence to a minimum.
Second automatic overseas test
You spent fewer than 46 days in the UK in the tax year, and you were not UK resident in any of the previous three tax years. This applies once you have already established a few clear non-resident years.
Third automatic overseas test — full-time work overseas
This is the test most relocating founders rely on. To meet it, all of the following must be true for the whole tax year:
You work full-time overseas, defined as averaging 35 or more hours of work per week over the year. The hours can come from one job, multiple jobs, employment, self-employment, or directorships of overseas companies — they aggregate. You have no significant break in overseas work — no continuous gap of 31 days or more without doing any overseas work, except for permitted gaps such as annual leave, sick leave, or parental leave. You spend fewer than 91 days in the UK in the tax year. Of those UK days, no more than 30 are days on which you work more than three hours in the UK.
The third overseas test is the centrepiece of most well-planned relocations because it gives a definitive answer. The price of admission is that the working pattern has to be real and continuous, and the UK day count has to stay disciplined for an entire UK tax year.
Stage 2 — the automatic UK tests
If you didn’t pass an overseas test, you check whether you automatically fall in. Three tests, again only one needs to apply:
183-day test. You spent 183 or more days in the UK in the tax year. The simplest and most absolute test in the entire SRT.
Only home test. Your only home (or all of your homes) was in the UK for at least 91 consecutive days, of which at least 30 fell in the tax year. This is the test that catches founders who think they have left the UK but in fact have not yet acquired a permanent home anywhere else.
Full-time work in the UK test. You worked full-time in the UK for any 365-day period that overlaps with the tax year. Mostly relevant to people moving the other direction (into the UK) but worth knowing exists.
Stage 3 — the sufficient ties test
If you survived stage 1 (no automatic overseas) and stage 2 (no automatic UK), residence is decided by your UK day count combined with how many UK ties you have. The five ties:
Family tie
You have a UK-resident spouse, civil partner, or cohabiting partner, or a minor child who is UK resident. There are detailed rules about whether time spent with the child counts, but the basic question is whether your immediate family centre of gravity is in the UK.
Accommodation tie
You have a place to live in the UK that is available to you for a continuous period of at least 91 days during the tax year, and you spent at least one night there. If the accommodation is the home of a close relative, the threshold rises to 16 nights.
“Available to you” is broad. It catches a property you own and keep ready for personal use, a long-term rental you keep on, a parent’s house you can use whenever you want, even a permanent room at a friend’s home. It does not catch a hotel, a holiday rental, or a property you have genuinely let out on an arms-length tenancy.
Work tie
You worked in the UK for at least 40 days in the tax year, where a UK workday is any day on which you did more than three hours of work in the UK. Calls and emails count. A board meeting counts. A partial day of UK work counts as a workday if you crossed the three-hour threshold.
90-day tie
You spent more than 90 days in the UK in either of the previous two tax years. This tie is unavoidable for the first two years after a partial-year departure — your prior history catches up with you.
Country tie
You spent more days in the UK than in any other single country in the tax year. This tie only applies if you were UK resident in any of the previous three tax years (so it bites on relocating founders, not on people moving in from elsewhere).
The day-count / ties matrix
The number of ties you can have without becoming UK resident depends on how many days you spend in the UK, and on whether you were UK resident in any of the previous three tax years.
For a founder who was UK resident in one of the previous three tax years (most of the people we work with):
Fewer than 16 UK days — automatic non-resident under stage 1, ties don’t matter. 16 to 45 UK days — UK resident only if you have all four ties. 46 to 90 UK days — UK resident if you have three or more ties. 91 to 120 UK days — UK resident if you have two or more ties. 121 to 182 UK days — UK resident if you have any one tie at all. 183 days or more — automatic UK resident under stage 2.
The pattern is asymmetric and deliberately so. The more time you spend in the UK, the fewer ties you are allowed. A founder who spends 100 UK days and has the family tie plus accommodation tie is UK resident. The same founder dropping to 80 UK days with the same two ties is not. Twenty days of holiday timing can be the difference between resident and non-resident for the entire tax year.
What counts as a UK day
For most purposes, you have a UK day if you were physically present in the UK at midnight at the end of that day. This is the rule that lets people land at Heathrow at 11pm on a Friday and avoid that being a UK day — they are still in transit, technically, but the SRT counts midnight presence.
There are two important wrinkles. First, the deeming rule: if you have at least three UK ties, were UK resident in one of the previous three tax years, and you have more than 30 “qualifying” days in the UK (days where you were present at any point but not at midnight), the excess over 30 are added to your day count. The deeming rule exists to stop the “fly out before midnight” trick from being abused.
Second, transit days that satisfy strict transit conditions (you arrived from outside the UK, departed to outside the UK, and did not undertake activities substantially unrelated to the transit) do not count. In practice the transit exception is narrow — a one-night layover at an airport hotel can count as a UK day if you treat it as anything other than transit.
What counts as a workday
For the third automatic overseas test and the work tie, a workday is any day on which you do more than three hours of work, wherever that work happens. The location of the day determines whether it is a UK workday or an overseas workday.
“Work” includes employment, self-employment, business activity, work-related travel where the time is spent on work, and meetings. It does not include travel that is genuinely personal or commuting that has no work content. Reading email on a flight while travelling for work is work; reading a novel on the same flight is not.
This is where many founders accidentally rack up UK workdays. A “couple of meetings while in the UK for a wedding” can quickly become 8–10 workdays in the year. For someone trying to stay under 30 UK workdays for the third automatic overseas test, that is a third of the budget.
The most common SRT mistakes we see
Three patterns repeat:
Counting tax-year days, not calendar-year days. The UK tax year runs from 6 April to 5 April. A founder who left the UK on 1 March 2026 still has the entire 2025/26 tax year on their record — and that year may well be a year of UK residence. Their non-residence clock starts on 6 April 2026, not on the day they got off the plane.
Misjudging the accommodation tie. Founders sell or let out their primary UK home but keep a “useful” second property — a flat near elderly parents, a bolt-hole in a city they visit often. That property is available accommodation under the SRT and triggers the tie. Either it has to be rented out on a real tenancy or the tie has to be accepted and the day count adjusted accordingly.
Treating “I work for myself, I work everywhere” as a defence. The SRT does not care that you describe yourself as a digital founder who works from anywhere. It cares about the location of you and your work hours on each calendar day. A founder who spends 100 days in the UK doing client calls from their parents’ kitchen has a substantial UK work footprint that the SRT records as such.
Worked examples
Example 1: clean third overseas test
Sarah, a UK consultant, leaves the UK on 1 May 2026. She takes up a UAE residence visa, opens a UAE company, and starts billing UAE and international clients from Dubai. Over the 2026/27 tax year (6 April 2026 to 5 April 2027) she works an average of 42 hours a week, has no continuous gap of more than three weeks off, spends 64 days in the UK over three short visits (30 of those days are full work-from-the-UK days, mostly from the spare room at her parents’ house). She is UK resident for the part of 2026/27 before 1 May (potentially split-year-treated as the overseas part), and on track to fail the third overseas test for 2026/27 — the 30 UK workdays are at the absolute limit.
What goes wrong: a single additional UK workday tips her into 31, breaching the third overseas test, and she becomes UK resident for the whole year. Sarah’s planning needs a margin — target 20 UK workdays, not 30.
Example 2: sufficient ties miscounted
Michael moves to Dubai in May 2026. His wife and child stay in the UK for the school year and join him in summer 2027. He spends 80 days in the UK across the 2026/27 tax year. He has: a family tie (spouse and child UK resident), an accommodation tie (the family home), a 90-day tie (he was UK resident in 2025/26 with more than 90 UK days). Three ties at 80 UK days means UK resident for the entire 2026/27 tax year — even though he physically lived in Dubai for most of it.
What needs to change: in cases like this, either the family relocates earlier, the day count drops below 46 (the no-resident threshold for someone with three ties), or the relocation is timed to start after the family move. There is no version of “I’m in Dubai but you can keep the family in the UK while we work it out” that is SRT-clean for the founder.
Example 3: a founder who thinks they’ve left
James leaves the UK in June 2026. He sells the UK family home but rents a flat in London on a flexible serviced-apartment basis “for visits”. He flies back to the UK every six weeks for client meetings, spending 4–7 nights each time. His UK days for 2026/27 add up to 95. He has the accommodation tie (the serviced apartment is available to him for more than 91 days in aggregate and he uses it), the work tie (his UK workdays exceed 40), and the 90-day tie. Three ties at 91–120 UK days means UK resident.
What needs to change: the serviced apartment cannot be a permanent fixture, the UK day count needs to come down materially, and either he stays in hotels for visits or he commits to a much lighter UK presence. James thought he had left. The SRT thinks otherwise.
Split year treatment — when the test gives a partial answer
The SRT decides residence for the whole UK tax year. Without a concession, someone who genuinely relocates mid-year would be UK resident for the entire year of departure, including on UAE income earned after they left. Split year treatment carves out the overseas part of the year from UK taxation in eight defined cases.
The most relevant for founders relocating to take up overseas work is Case 1 (starting full-time work overseas). For founders who relocate without taking up an employment-style role abroad — for example by genuinely giving up their UK home and acquiring a UAE home — Case 3 (ceasing to have a home in the UK) is the route, with stricter conditions.
Split year is covered in detail in our companion article: Split Year Treatment Explained.
How to use the SRT to plan a clean relocation
The SRT rewards deliberate planning. The cleanest UK→UAE relocations we work on share a common pattern:
Departure timed to align with the start of a UK tax year wherever feasible, or with the practical start of a Case 1 split year. The third automatic overseas test treated as the working answer, with day count and workday targets set well below the limits — 70 UK days and 20 UK workdays as a working maximum, not the headline 90 / 30. The accommodation tie cleared deliberately by selling or letting the UK home before departure. UK days tracked from day one, in a simple shared spreadsheet, with both arrival and departure timestamps. UAE residency, Emirates ID, banking and TRC application sequenced in the first nine months. Personal day-count audited annually — not on the morning of the tax return.
None of this is exotic. It is the structural housekeeping that turns “moved to Dubai” from a casual claim into a defensible position.
FAQs
When does the UK tax year start and end?
The UK tax year runs from 6 April to 5 April. All SRT day counts are measured against this period, not the calendar year. Someone who leaves the UK on 1 January is still on the books for nine months of that tax year and the SRT applies to that whole year.
Does a day in the UK include arrival and departure days?
The standard rule is that a day counts if you were in the UK at midnight at the end of that day. So a flight that lands in the UK at 11pm and departs the next morning at 6am counts as one UK day, not two. Departure days where you fly out before midnight do not count. The deeming rule modifies this for people with three or more ties and prior UK residence — see the article above.
Can I be tax resident in the UK and the UAE at the same time?
Yes — dual residence is possible. Each country applies its own residence test. Where dual residence arises, the UK–UAE double tax treaty has a tie-breaker that allocates residence to one country for treaty purposes, but the practical situation is messy and best avoided by planning the SRT cleanly in the first place.
What is full-time work overseas under the third automatic overseas test?
An average of at least 35 hours of work per week over the tax year, with no continuous gap of 31 or more days during which you do no overseas work (except for permitted gaps such as annual or sick leave). The hours can be aggregated across multiple jobs, self-employment, or directorships. The work has to be genuine and continuous over the year, not a few intense weeks bookending long gaps.
If I work for my own UAE company, does that count as full-time overseas work?
Yes, provided the work is real, the hours meet the average, and the activity is genuinely conducted from the UAE. Self-employment, founder hours, and directorship hours all aggregate into the count. The substance test is the question — what HMRC will look for is evidence the work was actually done, from the UAE, at the volume claimed.
What’s a “significant break” in overseas work?
A continuous period of 31 days or more during which you do no overseas work and the gap isn’t covered by a permitted reason (annual leave, sick leave, parenting leave, jury service). A founder who takes six weeks completely off — no email, no calls, no client work — has a significant break, and the third automatic overseas test fails for that year.
What is the accommodation tie really about?
It is about whether you have a place to live in the UK that you can use whenever you want, that’s available to you for at least 91 consecutive days, and where you have actually spent at least one night in the tax year. Owning a UK property does not automatically trigger the tie; what triggers it is the property being personally available rather than let on a real tenancy. A long-term tenanted buy-to-let does not trigger the tie. A flat you keep “for visits” does.
My spouse and children are still in the UK — am I automatically UK resident?
Not automatically — but you have the family tie, which makes the day-count maths much harder. With the family tie alone you can spend up to 120 days in the UK without becoming resident. Add the accommodation tie (a family home you can use) and the threshold drops to 90 days. Add the 90-day tie (which is automatic for the first two years after departure if you were UK resident with significant UK time in the prior years) and the threshold drops further. Most founders who leave their family in the UK find they have to keep UK days well below 60 to stay non-resident.
How do I prove my SRT position to HMRC?
The starting point is contemporaneous records — passport stamps, flight bookings, calendar entries, hotel and accommodation records, work logs. A simple day-count spreadsheet maintained at the time is far stronger than a reconstruction years later. For the third automatic overseas test, you also want evidence of overseas working hours — diary entries, project logs, billing records. HMRC has the right to ask, and an enquiry that finds detailed contemporaneous records ends much faster than one that finds a guess.
Does HMRC count days from passport stamps?
Passport stamps are one source of evidence and HMRC can request them, but they are not the only source. Border records, flight bookings, hotel records, credit card transactions, mobile phone location data and bank ATM withdrawals all create a footprint. UK Border Force records are accessible to HMRC. If your own records and the available data don’t agree, the burden is on you to explain the difference.
Does the SRT apply to my UK company as well as me personally?
No. The SRT is a personal residence test. Company tax residence is determined separately, primarily by the place of incorporation (a UK-incorporated company is automatically UK tax resident) and by the central management and control test for non-UK incorporated companies. We cover that separately in Management and Control Risks Explained.
If I fail the SRT in one tax year, am I a UK resident forever?
No. SRT applies year by year. If you fail in 2026/27 — for example because you accidentally hit 31 UK workdays — you are UK resident for that year only. The following tax year you re-test from scratch, and if you meet an automatic overseas test that year, you are non-resident again. The downside is the year you were UK resident is taxed on worldwide income, including UAE income.
Can I rely on HMRC’s residence indicator tool?
HMRC’s online tool gives an indicative answer based on inputs you provide, and is useful for sanity-checking simple cases. It is not a binding ruling, it doesn’t catch every nuance, and it is only as good as the day-count and tie information entered into it. For a relocating founder we would not rely on the tool alone — the consequences of an incorrect answer are too significant.
What’s the difference between residence and domicile?
Residence is a year-by-year question and is determined by the SRT. Domicile is a much stickier concept — it is broadly the country you treat as your permanent home, and it can persist for many years after you have physically left a country, particularly for inheritance tax purposes. From 6 April 2025, the UK replaced the remittance basis with the Foreign Income and Gains (FIG) regime, which offers a four-year window of relief for new arrivers who have been non-UK resident for the previous 10 tax years (HMRC, Reforming the Taxation of Non-UK Domiciled Individuals). The role of domicile in UK income tax and capital gains tax has accordingly narrowed, while domicile remains live for inheritance tax under the post-2025 residence-based framework. We treat domicile as a separate planning conversation from residence.
If I miss the SRT in my first year of relocation, can I correct it later?
You can amend a tax return within the standard time limits, but the SRT applies to the facts as they were — you cannot retroactively reduce your UK days or remove the accommodation tie. If the facts of the tax year mean you were UK resident under the rules, the answer is UK resident. The fix is to do the next tax year cleanly, not to recharacterise the past.
Should I get specialist UK tax advice on the SRT?
For a founder relocating with a UK company, UK property, ongoing UK income, or a family timeline that doesn’t quite line up, yes. The SRT is mechanical but the planning is not. Our standard practice is to scope the SRT position in the relocation plan from the outset, alongside the UAE structuring and banking work, so the personal residence side and the company side are designed together rather than in sequence.
Where to read next
For the company side of the structuring decision once UK residence is cleared: UAE Corporate Tax for Foreign Founders. For the full practitioner’s guide to the UK→UAE move: A Comprehensive Guide to Company Formation in Dubai. For the year-of-departure mechanics: Split Year Treatment Explained. For the broader question of HMRC’s reach after you leave: Can HMRC Still Tax You After Moving to Dubai?. For company-side residence risk: Management and Control Risks Explained. For the UAE side: UAE Tax Residency for UK Business Owners.
Disclaimer: This article is intended for general informational purposes only and is based on regulations, policies, and practical experience at the time of writing. While we aim to keep all information accurate and up to date, business, banking, tax, and compliance requirements can change and may differ depending on individual circumstances.
Nothing contained in this article should be considered formal legal or financial advice. If you are unsure how any information may apply to your situation, we recommend seeking advice from a suitably qualified professional.
