If you are preparing to live in, work in or move to the United Kingdom, tax residence is one of the first questions to clarify. It is not decided by your passport or visa alone. The UK Statutory Residence Test (SRT) determines an individual’s UK tax-residence position separately for each tax year.
The test is not simply a count of how long someone has lived in the UK. It applies a sequence of automatic overseas tests, automatic UK tests and, where neither decides the result, the sufficient ties test. The practical point is important: spending fewer than 183 days in the UK does not automatically make someone non-resident.
The short answer
For each UK tax year, which normally runs from 6 April to the following 5 April, the SRT is applied in this order:
- If you spend 183 days or more in the UK, you are normally UK tax resident for that tax year.
- If you spend fewer than 183 days, check the automatic overseas tests.
- If none of those tests applies, check the remaining automatic UK tests.
- Only if the automatic tests do not decide the position do you move to the sufficient ties test.
The order matters. The sufficient ties test is not a general checklist to run first; it is the final stage when the automatic tests have not already produced an answer.
Start by counting UK days correctly
For most SRT purposes, a UK day is counted by where you are at midnight. It is not simply the date shown on an arrival or departure stamp. Travel records, accommodation records and work diaries can therefore matter where a day-count is close to a threshold.
There are detailed statutory exceptions, and they should not be treated as automatic deductions:
- A transit day may be excluded where a person travels from outside the UK through the UK to another destination outside the UK, leaves the next day, and does not carry out substantive activities unrelated to the journey. The facts and travel arrangements matter.
- Days spent in the UK because of exceptional circumstances can be disregarded for certain parts of the test, subject to specific conditions and a 60-day limit. The limit is not an annual allowance and does not apply to every SRT calculation.
- A deeming rule can add days in particular cases involving former UK residents, multiple UK ties and more than 30 qualifying days in which the individual was in the UK but left before midnight.
These rules are technical. A person planning travel close to an SRT threshold should preserve a clear record instead of assuming every travel day will be treated in the same way.
First automatic UK test: 183 days or more
If you are present in the UK for 183 days or more in a tax year, you normally meet the first automatic UK test and are UK tax resident for that year. There is no need to count sufficient ties after that result.
This rule is straightforward, but it should not be read backwards. Being below 183 days only means this particular automatic UK test has not been met. It does not resolve the full SRT.
Automatic overseas tests
If the 183-day test does not apply, the next question is whether you meet an automatic overseas test. Meeting one normally makes you non-UK resident for that tax year.
The principal routes are:
- You were UK resident in one or more of the previous three tax years and spend fewer than 16 days in the UK in the current tax year.
- You were not UK resident in any of the previous three tax years and spend fewer than 46 days in the UK in the current tax year.
- You work full time overseas for the tax year, spend fewer than 91 UK days, have fewer than 31 UK workdays, and do not have a significant break from overseas work.
The full-time overseas work test has its own definitions and calculation periods. It is not enough merely to say that an employer, company or client is outside the UK. Working patterns, UK workdays and any substantial interruption must be assessed against the current HMRC guidance.
The remaining automatic UK tests
Where the automatic overseas tests do not apply, the SRT next considers two further automatic UK tests.
The UK home test
You may be UK resident if you have a home in the UK available to you for at least 91 consecutive days, spend at least one day there in the tax year, and do not have a comparable overseas home during the relevant period. The exact home and overseas-home conditions are detailed, so a property purchase or a room in the UK should not be treated as conclusive by itself.
The full-time work in the UK test
You may also be UK resident where you work full time in the UK over a relevant 365-day period, at least 75% of working days in that period are UK workdays, and the period includes at least one UK workday in the tax year. This is a work-pattern test rather than a simple employment-contract test.
The sufficient ties test
The sufficient ties test applies only if the automatic tests have not decided the result. It combines the number of UK days with the number of UK ties, and the threshold differs depending on whether you are a previous UK resident or an arriver.
HMRC identifies five possible ties:
| Tie | General meaning |
|---|---|
| Family tie | A spouse, partner or minor child is UK resident, subject to detailed child-related conditions. |
| Accommodation tie | UK accommodation is available for at least 91 continuous days and you stay there for the required number of nights. |
| Work tie | You work in the UK for more than 40 days, with a workday generally involving more than three hours of work. |
| 90-day tie | You spent more than 90 days in the UK in either of the previous two tax years. |
| Country tie | The UK is the country where you spend the greatest number of midnights in the tax year; this tie applies only to previous residents. |
A previous resident is someone who was UK resident for at least one of the preceding three tax years. An arriver was not. Previous residents generally need fewer ties to become resident at the same day-count.
| UK days in the tax year | Previous resident: ties needed | Arriver: ties needed |
|---|---|---|
| Fewer than 16 | Normally dealt with by an automatic overseas test | Not applicable |
| 16 to 45 | 4 | Not applicable |
| 46 to 90 | 3 | 4 |
| 91 to 120 | 2 | 3 |
| More than 120 | 1 | 2 |
This is why the statement “I was in the UK for fewer than 183 days” is not enough. A former UK resident with a UK home, family or work connection can reach residence at a much lower day-count than a newly arriving individual.
Split-year treatment is not automatic
Someone who arrives in or leaves the UK part way through a tax year is first considered resident or non-resident for the year as a whole under the SRT. Split-year treatment is only available if the person meets the conditions for one of the specified cases.
The cases for leaving the UK and the cases for starting to live in the UK have different requirements. If more than one case appears relevant, statutory priority rules can apply. Moving date, work pattern, home availability, family circumstances and overseas residence can all matter.
In other words, a tax year is not automatically split on the date you arrive or leave. Anyone relying on split-year treatment should establish which case applies before assuming that pre-arrival or post-departure income sits outside UK taxation.
What the SRT result can affect
The SRT result is a residence determination. It is not, by itself, a complete tax calculation.
UK residents are generally taxed on worldwide income and gains, subject to the legislation, available reliefs and any applicable treaty position. From 6 April 2025, the former remittance-basis rules were replaced by the four-year foreign income and gains (FIG) regime. A qualifying new resident may be able to claim relief for eligible foreign income and gains during the first four years of UK residence after at least ten consecutive tax years of non-UK residence. A claim is made through Self Assessment and can affect entitlement to certain allowances.
Non-UK residence does not mean that there is no UK tax exposure. UK-source income, such as UK rental income, UK employment income or some other UK-connected income, can still create UK reporting or tax obligations. The position can also be affected by the type of income, statutory exemptions and the terms of a double tax agreement.
If an individual may be resident in two countries, the domestic SRT result and the treaty residence position are separate questions. A double tax agreement may contain a tie-breaker provision, but its application depends on the treaty and the individual’s facts.
Common misunderstandings
“Below 183 days means I am non-resident.”
Not necessarily. It only means the 183-day automatic UK test has not been met. The automatic home or work tests, or the sufficient ties test, may still produce UK residence.
“A UK visa or property purchase makes me tax resident.”
Neither point alone decides tax residence. Immigration status and tax residence are separate systems. A UK property may be relevant to an accommodation tie or a home test, but it is only one part of the statutory analysis.
“I can always ignore 60 days for exceptional circumstances.”
No. The 60-day figure is a maximum within a narrow rule. It is not an entitlement and the circumstances and affected calculation must meet the legal conditions.
Questions to settle before you rely on an SRT result
Before relying on a residence view, gather a timeline for the full tax year:
- every UK arrival, departure and midnight location;
- homes available in the UK and overseas, including dates of availability and overnight stays;
- UK workdays and overseas workdays;
- the residence status of a spouse, partner and minor children;
- UK days in the previous two tax years and residence status in the previous three;
- income sources, gains and any potential treaty-residence issue; and
- the facts supporting any claim for exceptional circumstances or split-year treatment.
Zagdim provides general information and does not provide personal tax advice. Where a plan involves a move, a UK home, overseas work, share income, property income or tax residence in more than one country, a suitably qualified UK tax adviser should assess the facts before the arrangement is implemented.
FAQ
How is a UK day counted for the Statutory Residence Test?
In most cases it is determined by whether you are in the UK at midnight, subject to detailed statutory exceptions. Keep a travel record where the count is close to a threshold.
Can I be UK tax resident after spending fewer than 183 days in the UK?
Yes. The sufficient ties test can produce residence below 183 days, and the automatic UK home and full-time UK work tests can also be relevant.
Does buying a UK property make me UK tax resident?
No. It may be relevant to the accommodation or home analysis, but it does not decide the SRT on its own.
Does a split year begin automatically on the day I move?
No. Split-year treatment applies only when the conditions for a statutory case are met.
Does non-UK residence mean I have no UK tax filing or tax liability?
No. UK-source income and other UK tax rules can still be relevant. The applicable treatment depends on the income and circumstances.
References
HM Revenue & Customs – RDR3: Statutory Residence Test / HM Revenue & Customs – UK tax residence guidance / HM Revenue & Customs – four-year foreign income and gains regime / GOV.UK – Self Assessment and residence guidance
