Guide

The Statutory Residence Test, explained properly

Whether the UK taxes your worldwide income comes down to a mechanical test of days, ties and work. This is how it actually works — the automatic tests, the ties table, the split-year rules and the evidence that wins arguments with HMRC.

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Updated 24 August 2026 · 6 min read · by the Expat Accountants team

The four things to know

A 'day' means you were in the UK at midnight — 183 of them always makes you resident
Leavers are caught far more easily than arrivers: with 3 ties you can be resident at just 46 days
The year you leave or arrive can usually be split — the date is worth real money
HMRC residence enquiries are won on evidence: keep a day log and your travel records

Until 2013, UK tax residence was a fog of case law — you could genuinely not know your own status. The Statutory Residence Test replaced that with arithmetic. This is good news, because you can now know your position with certainty. It is also dangerous news, because the arithmetic has hard edges, and the people it cuts are almost always frequent visitors who never sat down and counted.

The stakes are the whole game: UK residents are taxed on their worldwide income; non-residents only on their UK income. For someone earning tax-free in Dubai or lightly-taxed in Singapore, accidentally becoming UK-resident for a year can be a five-figure event.

How the test is structured

The test runs in strict order, and the first part that gives an answer wins. A "day" throughout means you were physically in the UK at the end of the day — midnight — with narrow exceptions for transit and genuinely exceptional circumstances.

First: are you automatically non-resident?

You were UK-resident in at least one of the previous three tax years and spend fewer than 16 days in the UK this year; or
You were not UK-resident in any of the previous three years and spend fewer than 46 days; or
You work full-time overseas — averaging 35+ hours a week — with fewer than 91 UK days and fewer than 31 days working in the UK.

Meet any of these and you are non-resident. Done. The full-time-work-abroad route is the cleanest exit available and the reason contracts, hours and workday records matter for new expats.

Second: are you automatically resident?

183 or more UK days. No argument, no ties, no exceptions.
Your only home is in the UK (for a qualifying period, and you use it). The trap for people who "moved abroad" into hotels and short lets while keeping the UK house.
Full-time work in the UK.

Third: the sufficient-ties test

Only if neither automatic test bites do you count ties. There are five; each is either present for the whole year or it isn't:

Family: your spouse, partner or minor children are UK-resident.
Accommodation: a place in the UK available to you for 91+ consecutive days which you use at least once (a home you own and let on a genuine tenancy doesn't count — one kept "available" does).
Work: 40 or more days on which you work more than three hours in the UK.
90-day: you spent more than 90 days in the UK in either of the two previous tax years.
Country (leavers only): you spend more days in the UK than in any other single country.

UK days this year	Leaver is resident with…	Arriver is resident with…
16–45	4 or more ties	—
46–90	3 or more	4 ties
91–120	2 or more	3 or more
121–182	1 or more	2 or more

Read the leaver column again, because it is where lives go wrong. A leaver — anyone UK-resident in one of the last three years — with a spouse at home, the old house available and heavy visits last year has three or four ties before the year starts. Their safe budget is 45 days, possibly 15. Most people in exactly that position assume "under half the year here" keeps them safe. It does not, and HMRC does not send warnings — it sends assessments, years later, with interest.

Worked example: the Dubai commuter

Sami took a Dubai package in 2024. His wife and children stayed in Surrey; the family house is available to him; he spent 95 days in the UK last year. Count the ties: family, accommodation, 90-day — three. As a leaver with three ties he becomes UK-resident at just 46 days. His plan — a week home each month plus most of the school summer — comes to roughly 65 days. On that plan his Dubai salary is fully UK-taxable and he doesn't know it.

The repair: cap this year at 45 days with the evidence to prove it, and start shedding ties — the family joining him in Dubai removes the family tie at once and, once the house is genuinely let rather than "kept available", the accommodation tie too. By year three his budget is 120 days and the problem has evaporated. The £400 conversation in March is worth more than any tax return we will ever file for him.

The year you leave or arrive: split years

Residence is normally all-or-nothing for a whole tax year — which would be absurd for the year you emigrate in September. The split-year rules divide that one year into a UK part and an overseas part, but only if you fit one of eight defined cases: starting full-time work abroad (Case 1); being the partner of someone who does (Case 2); ceasing to have any UK home (Case 3); and, for arrivers, starting to have your only home here, starting full-time UK work, returning after a stint of full-time work abroad, and their variants (Cases 4–8).

Each case has its own conditions and — crucially — its own split date, and where more than one case applies the rules choose for you. Getting the date right decides which side of the line your final bonus, your leaving payment or your first overseas salary lands. We have seen a one-month error on a split date change a bill by more than £20,000. This calculation is the single most valuable line of a leaver's final return.

Days that don't count — and days that secretly do

Transit days don't count if you arrive one day, leave the next, and do nothing in between unrelated to travel. Dinner with a client on the way through ends the exemption.
Exceptional circumstances — serious illness, a family emergency, a national crisis — can exclude up to 60 days. HMRC construes this narrowly: a cancelled flight is not exceptional; being hospitalised is. Do not build a plan that needs this relief.
The deeming rule catches heavy day-trippers: if you're a leaver with three or more ties and you make more than 30 same-day visits, days without midnights start counting after the 30th. The executive who "never stays over" is precisely who this rule was written for.

The evidence file

Residence enquiries are not arguments about law — they are arguments about where you were, sometimes four years ago. The winning file is boring: a contemporaneous day log (a spreadsheet or the calendar you already keep), boarding passes or airline booking emails, and for the accommodation tie, the tenancy agreement that proves the house wasn't available. We build and keep this file for every client as part of the annual return. The year HMRC asks is the wrong year to start it.

Questions we're asked every week

"My employer's HR says I'm non-resident, so I'm fine — right?"

Employers apply payroll rules; the SRT applies to you. The two disagree constantly. Your residence is decided by the test above and nothing else — payroll can be corrected afterwards.

"Do days visiting my children count differently?"

No, but the children may create a family tie that exists all year regardless of your days. The tie is binary; the days are just days.

"Can I be resident nowhere?"

Yes — and it's not the free pass it sounds like. UK-source income stays UK-taxable, some countries will claim you anyway, and banks increasingly demand a tax residence somewhere. Plan for where you are resident, not for a gap.

"I'm right on the line this year. What do I do before 5 April?"

Count, honestly, today. If you're over, options exist while the year is open — shedding a tie, cancelling a trip — that vanish on 6 April. This is exactly what a departure review is for, and late March is our busiest fortnight for a reason.

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