Whether you pay UK tax on your worldwide income comes down to one thing: are you UK tax resident? The Statutory Residence Test (SRT) decides that — and it is decided by counting days and ties, not by where you feel you live.
If you are moving to or from the UK, working remotely from abroad, or splitting your year across two countries, the SRT is the single most important piece of tax law for you. Get it wrong and you can find yourself taxed on your global earnings in a year you thought you had left, or denied the protection you assumed you had. This guide walks through the test exactly as HMRC applies it: in order, one stage at a time.
What the Statutory Residence Test actually decides
The SRT decides whether you are UK resident for a given tax year. The UK tax year runs from 6 April to 5 April. Residence is worked out separately for each tax year, so you can be resident one year and non-resident the next.
Why it matters: if you are UK resident, you are generally taxable in the UK on your worldwide income and gains. If you are non-resident, you are usually only taxable on UK-source income (such as UK rental profits or UK employment days). It also feeds into how much tax-free income you keep — see how much you can earn before paying tax — and how your Self Assessment tax bill is calculated.
The test is applied in a strict order, and you stop at the first stage that gives a clear answer:
- Stage 1 — the automatic overseas tests. Meet one and you are non-resident. Stop here.
- Stage 2 — the automatic UK tests. If no overseas test applies, check these. Meet one and you are resident. Stop here.
- Stage 3 — the sufficient ties test. If neither of the above is conclusive, your residence depends on combining your day count with up to five ties.
What counts as a day in the UK?
Almost everything in the SRT turns on days, so the definition matters. As a general rule, a day counts if you are in the UK at the end of the day — that is, at midnight. So a day you fly out in the morning usually does not count, while a day you arrive in the evening usually does.
There are anti-avoidance rules (such as the "deeming rule" for people with several ties who make many short visits, and transit-day and exceptional-circumstances exceptions) that can change the count. The headline point: keep a contemporaneous travel log. Boarding passes, flight records and a simple spreadsheet of arrival and departure dates are your evidence if HMRC ever asks.
Stage 1: the automatic overseas tests
Work through these first. If any one applies, you are automatically non-resident for the year and you do not need to look any further.
The 16-day test
You are non-resident if you were UK resident in one or more of the previous three tax years and you spend fewer than 16 days in the UK in the current year.
The 46-day test
You are non-resident if you were not UK resident in any of the previous three tax years and you spend fewer than 46 days in the UK in the current year. The threshold is more generous because you have not been a recent UK resident.
The full-time work abroad test
You are non-resident if you work full-time overseas across the year, provided you spend fewer than 91 days in the UK and no more than 30 days working in the UK (that is, fewer than 31 UK working days). "Full-time" has a defined sufficient-hours calculation, so this one needs care if you have gaps, leave, or trips back.
Stage 2: the automatic UK tests
If none of the overseas tests apply, check the automatic UK tests. Meet one and you are resident.
The 183-day test
You are UK resident if you spend 183 days or more in the UK during the tax year. This is the one most people have heard of — but it is only one of several tests, and you can be resident on far fewer days through Stage 3.
The only-home test
You are UK resident if, for a period, your only home is in the UK (or all your homes are), broadly where you have that home for at least 91 days in the year and are present in it on at least 30 days. This catches people who keep a single home in the UK while travelling.
The full-time work in the UK test
You are UK resident if you work full-time in the UK over a 365-day period that falls within the tax year, meeting the sufficient-hours test with no significant breaks.
Stage 3: the sufficient ties test
If neither set of automatic tests settles it, residence is decided by the sufficient ties test. This combines two things: how many days you spent in the UK, and how many "ties" to the UK you have. The more days you spend here, the fewer ties it takes to make you resident.
Crucially, the thresholds differ depending on whether you are an arriver (not UK resident in any of the previous three tax years) or a leaver (UK resident in one or more of the previous three tax years). Leavers face tougher thresholds — fewer ties make them resident — and leavers have an extra fifth tie available to them.
The five ties
- Family tie. Your spouse, civil partner or partner you live with, or a minor child, is UK resident.
- 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 and you spend at least one night there (16 nights if it is a close relative's home).
- Work tie. You do more than three hours of work in the UK on at least 40 days in the year.
- 90-day tie. You spent more than 90 days in the UK in either of the previous two tax years.
- Country tie (leavers only). The UK is the country in which you were present at midnight for the greatest number of days in the year.
The principle is a sliding scale: as your UK day count rises through bands, the number of ties needed to make you resident falls. By the time you are in the 121–182 band, a leaver needs only one tie; an arriver needs two. Per HMRC's RDR3 guidance, the thresholds work as follows:
| Days in the UK in the tax year | Ties that make a leaver resident | Ties that make an arriver resident |
|---|---|---|
| Fewer than 16 | Always non-resident | Always non-resident |
| 16 to 45 | At least 4 ties | Always non-resident |
| 46 to 90 | At least 3 ties | All 4 ties |
| 91 to 120 | At least 2 ties | At least 3 ties |
| 121 to 182 | At least 1 tie | At least 2 ties |
| 183 or more | Always resident | Always resident |
Note that arrivers cannot have the country tie, so they have a maximum of four ties; leavers have all five available.
Worked example: a leaver counting days and ties
Illustrative example. Priya was UK resident for years before 2026/27, then took a senior role in Dubai. She wants to be non-resident for 2026/27. Because she was UK resident in the previous three years, she is a leaver.
First, the automatic tests. She is in the UK for 100 days in the year, so the 16-day and 46-day overseas tests fail (too many days), and she does not work full-time overseas to the SRT standard because of frequent UK project trips. She is well under 183 days, has homes in both countries, and does not work full-time in the UK — so no automatic UK test applies either. That pushes her into Stage 3.
Now count her ties:
- Family tie — yes. Her husband stayed in the UK and remains UK resident.
- Accommodation tie — yes. The family home in Surrey is available to her all year and she stays there on visits.
- Work tie — yes. She did more than three hours of UK work on 42 days, over the 40-day limit.
- 90-day tie — yes. She spent well over 90 days in the UK in the previous tax year.
- Country tie — no. She spent more midnights in the UAE than in the UK.
That is four ties. At 100 days in the UK (the 91–120 band), a leaver needs only two ties to be UK resident. With four ties, Priya is comfortably UK resident for 2026/27 — the opposite of what she intended. She remains taxable in the UK on her worldwide income, including the Dubai salary.
What would have changed the result? Cutting her UK days below 46 would have triggered the 46-day overseas test only if she had not been resident in the prior three years — which, as a leaver, she had been, so she would actually have needed to drop below 16 days. Alternatively, shedding ties (giving up the available UK accommodation, keeping UK working days under 40) combined with far fewer UK days could move her into a band where her remaining ties were not enough. The lesson: for a recent leaver, becoming non-resident usually means genuinely and provably reducing both days and ties — not just buying a one-way ticket.
Split-year treatment
What if you move part-way through a tax year? In some cases the year can be split into a UK part and an overseas part, so you are only taxed as resident for the portion you were genuinely living here. Split-year treatment is not optional or automatic — it applies only if you meet one of eight defined cases (for example, starting full-time work abroad, or your partner moving overseas). It does not change whether you are resident for the year; it changes how that year is taxed. Get this checked, because the cases are precise.
Why this is high-stakes — and what to do
The SRT is mechanical, but the inputs are easy to get wrong, and the cost of an error is large. A single extra UK day, an overlooked working day, or an available UK home you forgot about can flip you from non-resident to resident and bring your entire worldwide income into UK tax.
Three practical rules:
- Keep a day log all year. Record every arrival and departure, UK working days, and nights spent in any UK accommodation. Reconstructing this after the fact, under HMRC enquiry, is painful and weak as evidence.
- Count ties before you book travel. Know your band and how many ties you have before adding UK days, not after.
- Get advice before you move. Residence interacts with double-tax treaties, the timing of bonuses and share awards, and your wider position. If you are also winding up UK affairs, planning the order of events matters — much like closing a company tax-efficiently rewards getting the sequence right.
The SRT rewards planning and punishes assumptions. If your year is anywhere near a threshold, treat it as a decision to plan, not a fact to discover in January.
Sources
- HMRC — RDR3: Statutory Residence Test (SRT) guidance notes
- GOV.UK — Tax on foreign income: UK residence and tax
- GOV.UK — Tax on your UK income if you live abroad
- HMRC — Residence, Domicile and Remittance Basis Manual
- GOV.UK — Income Tax rates and Personal Allowance
Frequently asked questions
Does spending fewer than 183 days in the UK automatically make me non-resident?
No. The 183-day test is only one of the automatic UK tests, and it makes you resident if you exceed it — it does not make you non-resident if you fall under it. Through the sufficient ties test you can be UK resident on far fewer days. For example, a leaver with enough ties can be resident on just over 16 days. You have to work through the overseas tests, the UK tests and then the ties test in order.
What is the difference between an arriver and a leaver?
A leaver was UK resident in one or more of the previous three tax years; an arriver was not UK resident in any of them. It matters because leavers face tougher sufficient-ties thresholds (fewer ties make them resident) and have an extra fifth tie — the country tie — that arrivers do not. A recent leaver therefore has to work harder, on both days and ties, to become non-resident.
What counts as a day spent in the UK for the SRT?
As a general rule, a day counts if you are in the UK at the end of the day, meaning at midnight. So a day you leave in the morning usually does not count, while a day you arrive in the evening usually does. There are special rules for transit days, exceptional circumstances and frequent short visitors, so keep a detailed travel log of your arrival and departure dates as evidence.
Do I need professional advice for the SRT?
Often, yes — especially if your day count or ties are near a threshold, you are moving mid-year, or you have foreign income. The test is mechanical but the inputs (working days, available accommodation, sufficient-hours calculations, split-year cases) are easy to misjudge, and getting it wrong can bring your worldwide income into UK tax. The cost of advice is small next to that risk, and you should keep a contemporaneous day log regardless.
