The UK Sufficient Ties Test, Explained for Owners Moving to Dubai

The UK Statutory Residence Test, usually shortened to the SRT, is the rulebook HMRC uses to decide whether you are UK tax resident in a tax year. For owners leaving the UK for Dubai, the part that catches people out is the sufficient ties test: the days you spend in the UK, set against the ties you still have to the UK. The rules are in the UK’s residence legislation and have applied from the 2013-14 tax year, with HMRC’s working guidance in its guidance note on the test. The SRT is mechanical.

It runs a set sequence of objective tests, in order, and the answer is the answer. There is no negotiating it, and equally no room for HMRC to take a view on what feels right. For an owner relocating from the UK to Dubai, this is the test you have to satisfy to confirm that you have genuinely left the UK tax net. You confirm it to yourself, to your accountant, and to HMRC if they ask.

It is straightforward in principle and unforgiving in detail. This article walks through how it works, where owners most often go wrong, and what it means day to day for a UK→UAE move. It is general information, not tax advice. Your own UK tax adviser confirms your position, on your own facts, before you move.

How does the SRT work?

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 get to pick the test you prefer.

• Stage 1 — automatic overseas tests. Meet any one of these and you are non-UK resident for the tax year, full stop.
• Stage 2 — automatic UK tests. If no stage-1 test applies 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 it, residence is decided by a matrix that sets your UK day count against the number of UK ties you have.

Most relocating owners aim to pass an automatic overseas test at stage 1, and never engage with the ties test at all. Most often it is the third one, full-time work overseas. The owners who get caught are usually the ones who land in the ties matrix and either miscount their days or forget about a tie they were still carrying.

Stage 1: what are the automatic overseas tests?

There are three automatic overseas tests, and meeting any one of them makes you non-UK resident for the tax year.

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 banked a few clear non-resident years.

Third automatic overseas test — full-time work overseas

This is the one most relocating owners rely on. To meet it, all of the following have to be true across the whole tax year:

• You work full-time overseas, broadly an average of 35 or more hours of work a week over the year. The hours can come from one job or several, from employment, self-employment or directorships of overseas companies. They aggregate.
• You have no significant break in overseas work. A significant break is a run of 31 days or more without a single day on which you do more than three hours of overseas work. Days you would have worked but for annual leave, sick leave or parenting leave still count as work days. Light contact does not rescue a gap: an hour of email a day is not a day of overseas work for this purpose.
• You spend fewer than 91 days in the UK in the tax year.
• Of those UK days, the number on which you do more than three hours of work in the UK is fewer than 31. That means no more than 30 UK workdays.

The third test is the centrepiece of most well-planned relocations because it gives a definitive answer. The catch 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.

Sources: HMRC’s guidance note on the test and its manual page on the third overseas test.

Stage 2: what are the automatic UK tests?

If no overseas test applies, you check whether you automatically fall in: meeting any one of the three automatic UK tests makes you UK resident for the tax year.

• 183-day test. You spent 183 or more days in the UK in the tax year. The simplest and most absolute test in the whole SRT.
• UK home test. You had a home in the UK for at least 91 consecutive days, at least 30 of which fell in the tax year, and you were present in that home on at least 30 days in the tax year. Throughout that 91-day period you also had no overseas home. Or, if you had one, you were present in it on fewer than 30 days in the tax year. That second limb catches owners who have taken a Dubai apartment but have barely slept in it by 5 April.
• Full-time work in the UK test. You worked full-time in the UK across any 365-day period that overlaps the tax year. It mostly matters to people moving the other way, into the UK.

Sources: HMRC’s guidance note on the test and its manual page on the 183-day test.

Stage 3: what is the sufficient ties test?

Residence comes down to your UK day count combined with how many UK ties you have. You get here if you got past stage 1 (no automatic overseas) and stage 2 (no automatic UK). There are 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 when time with the child counts, but the basic question is whether your immediate family’s 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 in 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: 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 like, a permanent room at a friend’s. Short stays in hotels and guesthouses usually do not give you the tie, but booking the same hotel for 91 days or more in a row does. A property you have wholly let out commercially is not available to you, unless you keep the right to use it.

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 counts as a workday once you cross the three-hour line.

90-day tie

You spent more than 90 days in the UK in either of the previous two tax years. For the first two years after a part-year departure this tie is effectively unavoidable. Your prior history catches up with you.

Country tie

The UK is the country where you spent the most midnights in the tax year. If the UK is level with another country for the most, you still have the tie. So equal midnights in the UK and Dubai still give you a country tie.

Sources: HMRC’s manual on the ties test and its page on when accommodation is not a tie, with the accommodation tie and country tie rules in UK law.

How do UK days and ties combine?

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. Most of the people we work with were UK resident in one of the previous three tax years. For them:

• Fewer than 16 UK days — automatic non-resident under stage 1; ties do not matter.
• 16 to 45 UK days — UK resident if you have four or more of the five 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 days or more, up to 182 — UK resident if you have any one tie at all.
• 183 days or more — automatic UK resident under stage 2.

For someone who was not UK resident in any of the previous three tax years, HMRC uses a softer table:

• Fewer than 46 UK days: non-resident under the second automatic overseas test.
• 46 to 90 UK days: UK resident only with all four ties.
• 91 to 120 UK days: UK resident with three or more ties.
• 121 days or more, up to 182: UK resident with two or more ties.

That softer table applies later in a move, once you have three clear years out. It is not the one you use in the year you leave.

Here is how that plays out year by year for an owner who was UK resident up to 5 April 2026, leaves in May 2026 and is non-resident in every tax year from 2026/27:

• 2026/27 and 2027/28: the first table above applies. The first automatic overseas test (fewer than 16 UK days) is open to you. The 90-day tie still looks back at your 2025/26 UK days.
• 2028/29: the first table and the first test still apply, because 2025/26 is one of the previous three tax years. The 90-day tie now looks only at 2026/27 and 2027/28, so it falls away if you spent 90 UK days or fewer in each of them.
• 2029/30: you now have three clear non-resident years behind you. The softer table and the second automatic overseas test (fewer than 46 UK days) apply. The first test no longer does.

Say you are UK resident for 2026/27 and rely on split-year treatment instead. That year still counts as a UK-resident year, so the softer table and the second test arrive a year later, in 2030/31.

The pattern is asymmetric, deliberately so. The more time you spend in the UK, the fewer ties you are allowed. An owner who spends 100 UK days with the family tie plus the accommodation tie is UK resident. The same owner 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 whole tax year.

Sources: HMRC’s manual page on the number of ties, with the first overseas test and 90-day tie rules in UK law.

What counts as a UK day?

You have a UK day if you are in the UK at midnight at the end of that day. So if you land at Heathrow at 11pm on a Friday and go home for the weekend, the Friday is a UK day. If you fly out before midnight, that day is not a UK day, subject to the deeming rule below. HMRC’s manual page on what a UK day means says it plainly: “An individual is considered to have spent a day in the UK if they are here at the end of the day (midnight).”

There are two wrinkles. First, the deeming rule. It applies if you have at least three UK ties, were UK resident in one of the previous three tax years, and have more than 30 “qualifying” days in the UK. Qualifying days are days you were present at some point but not at midnight. The days over 30 are added to your count. The rule exists to stop the “fly out before midnight” trick from being abused.

The deeming rule does not apply to the day limit under the third automatic overseas test. That test counts midnight days on its own terms.

Second, the transit exception. The day you arrive does not count if you arrive in the UK as a passenger, leave the next day, and in between do nothing that is to a substantial extent unrelated to passing through. HMRC’s manual adds that you are travelling from one country outside the UK to another on a through ticket.

In practice that is narrow. A genuine next-day connection escapes the count. Seeing family, going home for the night or a stopover you booked as a short stay does not.

Sources: the midnight and transit rule and the deeming rule in UK law, with HMRC’s manual pages on the deeming rule and transit days.

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 the work happens. The location of the day decides whether it is a UK workday or an overseas one. “Work” covers employment, self-employment, business activity, work-related travel where the time is spent working, and meetings. It does not cover travel that is genuinely personal, or commuting with 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 owners accidentally rack up UK workdays. A “couple of meetings while I was over for a wedding” still counts, and a few of those across the year add up quickly. For someone trying to stay under 31 UK workdays on the third overseas test, every one of them comes out of the same small allowance.

Sources: the full-time work overseas and work tie rules in UK law.

Which mistakes do we see most often?

Three patterns repeat.

Counting calendar-year days, not tax-year days

The UK tax year runs 6 April to 5 April, as GOV.UK’s residence page sets out. An owner who left on 1 March 2026 still has the whole 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 the day they got off the plane.

At Start Business Services we build the Dubai timetable around the UK tax year rather than the calendar, and we will push a move back a few weeks if that saves someone a year of UK residence they did not need.

Misjudging the accommodation tie

Owners sell or let out the main UK home but keep a “useful” second property, such as a flat near elderly parents or a bolt-hole in a city they visit often. Under the SRT that is available accommodation, and it triggers the tie. Either it gets let on a real tenancy, or the tie is accepted and the day count is adjusted accordingly.

Treating “I work for myself, I work everywhere” as a defence

The SRT does not care that you describe yourself as someone who works from anywhere. It cares about where you and your work hours actually were on each day. An owner spending 100 days in the UK doing client calls from a parent’s kitchen has a substantial UK work footprint, and the SRT records it as one.

Worked examples

These are illustrations, not client records. The limits they test are the ones sourced above.

Example 1: a clean third overseas test

Sarah, a UK consultant, leaves on 1 May 2026. She takes a UAE residence visa, opens a UAE company, and starts billing UAE and international clients from Dubai.

Across 2026/27 (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, and spends 64 days in the UK over three short visits. Of those, 30 are full work-from-the-UK days, mostly from the spare room at her parents’.

If she meets the third overseas test for 2026/27, she is non-resident for the whole of that tax year. Split-year treatment does not arise at all, because a year can only be split if you are UK resident for it.

Now say she misses the test, and the ties then make her UK resident for the year. Case 1 split-year treatment is then the fallback, provided the third overseas test makes her non-resident for the following tax year. The part before her overseas work starts is the UK part. The part running from that day to 5 April is the overseas part.

Either way, those 30 UK workdays sit right at the limit. The failure mode: a single extra UK workday tips her to 31, breaches the test, and her residence for the whole year then turns on the ties instead.

Sarah’s plan needs 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 2026/27. He has a family tie (spouse and child UK resident), an accommodation tie (the family home), and a 90-day tie (he was UK resident in 2025/26 with more than 90 UK days).

He does not meet an automatic overseas test: 80 UK days is too many for the first two, and 34 of those days are UK workdays, more than the 30 the third test allows. So the ties decide it.

Three ties at 80 UK days means UK resident for 2026/27, even though he physically lived in Dubai for most of it. Whether any part of that year can be split is a separate question, covered under split-year treatment below. What has to change: the family relocates earlier, or the day count drops below 46 (the no-resident floor with three ties), or the move is timed to start after the family move.

There is no version of “I’m in Dubai while we work the family out” that is SRT-clean for the owner.

Example 3: an owner who thinks he has left

James leaves in June 2026. He sells the UK family home but rents a London flat on a flexible serviced-apartment basis that he keeps in place all year “for visits”. He flies back every six weeks for client meetings, four to seven nights each time. His UK days for 2026/27 add up to 95.

He has the accommodation tie, because the serviced apartment is available to him for a continuous period of well over 91 days and he uses it. The test is a continuous period, not days added up. He also has the work tie (UK workdays over 40) and the 90-day tie. Three ties at 91–120 UK days means UK resident.

What has to change: the serviced apartment cannot be a permanent fixture, the UK day count has to come down materially, and he either stays in hotels for visits or commits to a much lighter UK presence. James thought he had left. The SRT thinks otherwise.

When does split-year treatment apply?

In eight defined cases, split-year treatment divides the year into a UK part and an overseas part, and for most purposes you are taxed as a non-resident for the overseas part. 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 the months after they left.

HMRC’s guidance note on the test puts it this way: residence covers the whole of a tax year, but “that year may be split into a UK and an overseas part.”

For owners relocating to take up overseas work, the most relevant is Case 1 (starting full-time work overseas). Owners who leave without starting full-time work overseas look at the other two leaving cases, Case 2 and Case 3, which have their own conditions. A split year is still a year in which you are UK resident, and that can matter for rules that count your UK years, so ask your own UK adviser what it means for you. We cover the mechanics in Split Year Treatment Explained.

Sources: HMRC’s manual pages on what a split year is, Case 1 and the UK and overseas parts of a Case 1 year.

How do you plan a clean relocation around the SRT?

The SRT rewards deliberate planning. The cleanest UK→UAE relocations we see share a pattern:

• Departure timed to line up with the start of a UK tax year where feasible, or with the practical start of a Case 1 split year.
• The third overseas test treated as the working answer, with UK days and UK workdays kept well inside its limits (fewer than 91 UK days and fewer than 31 UK workdays), not planned right up to them.
• The accommodation tie cleared deliberately, by selling or properly letting the UK home before departure.
• UK days tracked from day one in a simple shared spreadsheet, with both arrival and departure recorded.
• UAE residency, Emirates ID, banking and the tax residency certificate planned into the timetable from the start.
• The day count audited once a year — 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. How the UAE side of residence works alongside this is set out in UAE Tax Residency for UK Business Owners.

Common questions

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 that period, not the calendar year. Someone who leaves on 1 January is still on the books for nine months of that tax year, and the SRT applies to the whole of it.

Does a UK day 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 it. Land at 11pm, sleep at home and fly out at 6am the next morning, and that is one UK day, not two. A genuine next-day connection, where you only pass through, does not count (see above). Days you fly out before midnight do not count. The deeming rule above modifies this for people with three or more ties and prior UK residence.

Can I be tax resident in the UK and the UAE at the same time?

Yes — dual residence is possible, because each country applies its own residence test. Where it arises, the UK–UAE double tax treaty has a tie-breaker that allocates residence to one country for treaty purposes, but the practical position is messy and best avoided by getting the SRT clean in the first place.

What is “full-time work overseas” under the third test?

Broadly, an average of at least 35 hours of work a week over the tax year, with no run of 31 or more days in which not one day is a day you do more than three hours of overseas work. Days you would have worked but for annual, sick or parenting leave still count. 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 with long gaps either side.

If I work for my own UAE company, does that count?

Yes, provided the work is real, the hours meet the average, and the activity is genuinely carried out from the UAE. Self-employment, owner hours and directorship hours all aggregate. The question is substance. What HMRC looks for is evidence the work was actually done, from the UAE, at the volume claimed.

What is a “significant break” in overseas work?

A run of 31 days or more in which not one day is a day you do more than three hours of overseas work, and the gap is not covered by annual, sick or parenting leave. The threshold is three hours a day, not no work at all. An owner who clears an hour of email most mornings through a six-week gap has still had a significant break, because none of those days reaches three hours, and the third overseas test fails for that year. You can read the break rule in UK law.

What does the accommodation tie really turn on?

Whether you have a place to live in the UK that you can use whenever you want, that is available to you for a continuous period of at least 91 days, and where you have spent at least one night in the tax year. Owning a UK property does not automatically trigger it; 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. Add the 90-day tie and it drops further. That tie is effectively automatic for the first two years after departure if you had significant UK time in the prior years. If you leave family in the UK, keep your UK days well inside the limit for your ties, not right up to it.

The family tie rule is in UK law, and HMRC’s manual page on the number of ties sets the day limits.

How do I prove my SRT position to HMRC?

With contemporaneous records — passport stamps, flight bookings, calendar entries, accommodation records, work logs. A simple day-count spreadsheet kept at the time is far stronger than a reconstruction years later. For the third overseas test you also want evidence of overseas working hours: diary entries, project logs, billing records. HMRC can ask, and an enquiry that meets detailed contemporaneous records ends much faster than one that meets a guess.

Does the SRT apply to my UK company as well as me?

No. The SRT is a personal residence test. Company tax residence is decided separately, primarily by place of incorporation and by the central management and control test for non-UK companies. A UK-incorporated company is automatically UK tax resident. The incorporation rule is in UK company tax law, and HMRC’s manual on company residence explains the control test. We cover that in Management and Control Risks Explained.

If I fail the SRT one year, am I UK resident forever?

No. The SRT applies year by year. Say you fail in 2026/27 because you accidentally hit 31 UK workdays. You are UK resident for that year only. The next tax year you re-test from scratch, and if you meet an automatic overseas test you are non-resident again. The cost is that you are UK resident for that whole year, and your own UK adviser works out what that means for your tax.

Coming back to live in the UK after a short time away brings in a separate rule, temporary non-residence, which we cover in How to Leave the UK Tax System Properly.

Can I rely on HMRC’s online residence tool?

It gives an indicative answer from the inputs you provide and is useful for sanity-checking simple cases. GOV.UK’s residence page describes the checker as giving “an indication of whether you were a UK resident during a tax year”. It does not catch every nuance, and it is only as good as the day-count and tie information you put in. For a relocating owner we would not rely on the tool alone. The cost of a wrong answer is too high.

What is the difference between residence and domicile?

Residence is a year-by-year question decided by the SRT. Domicile is a separate question, and the rules around it changed on 6 April 2025.

From 6 April 2025 the 4-year foreign income and gains (FIG) regime replaced the remittance basis. For inheritance tax, from the same date the domicile and deemed domicile rules were replaced by long-term UK resident rules.

Sources: HMRC’s guidance on the 4-year foreign income and gains regime and on inheritance tax for long-term UK residents.

Should I take specialist UK tax advice on the SRT?

For an owner relocating with a UK company, UK property, ongoing UK income, or a family timeline that does not quite line up, yes. The SRT is mechanical, but the planning around it is not. Our own practice is to scope the SRT position in the relocation plan from the start, alongside the UAE structuring and banking, so the personal-residence side and the company side are designed together rather than in sequence. The UK tax advice is taken from a suitably qualified UK adviser.

Where to read next

For the UAE side of residence once the UK position is cleared: UAE Tax Residency for UK Business Owners. 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 the company-side residence risk: Management and Control Risks Explained.

This article is general information based on the rules and our practical experience at the time of writing. Tax rules change and depend on individual circumstances; nothing here is formal legal or financial advice. If you are unsure how any of it applies to you, take advice from a suitably qualified professional.