The short answer, side by side
If the SRT makes you non-resident for the whole of 2026/27, that is almost always the better result: every day of the year sits outside the UK worldwide tax net, and your position rests on day counts you can evidence rather than on one of eight detailed statutory cases. Split-year treatment is the rescue for a mid-year move, valuable but second-best, not an equal alternative.
| Decision factor | Split-year treatment | Full year of non-residence |
|---|---|---|
| SRT status for 2026/27 | UK resident for the whole year | Non-resident for the whole year |
| How the year is taxed | Resident to the split date, broadly non-resident after it | Non-resident from 6 April 2026 to 5 April 2027 |
| How you qualify | Meet every condition of one of the eight cases | Pass an automatic overseas test or stay under the ties bands |
| Any element of choice | No: applies by law or not at all | No, but you control the day counts |
| Foreign income and gains | Outside UK tax only from the split date | Outside UK tax for the whole year |
| UK-source income (rent, some pensions) | Still UK-taxable in both parts | Still UK-taxable all year |
| Best suited to | A move you cannot delay mid-year | A departure you can time near 6 April |
What a full year of non-residence means
A full year of non-residence means the SRT, applied to the whole of 2026/27, concludes you are not UK resident. The test runs in a fixed order: automatic overseas tests, then automatic UK tests, then the sufficient ties test, stopping at the first definitive answer.
The surest routes are the automatic overseas tests (GOV.UK): fewer than 16 UK days if you were resident in any of the three previous tax years (a leaver), fewer than 46 if you were not (an arriver), or full-time work abroad averaging at least 35 hours a week with fewer than 91 UK days, no more than 30 of them working days. Meet any one and you are non-resident, no ties analysis needed. Our SRT calculator gives a quick first pass.
For the entire year you are then taxed, broadly, only on UK-source income and gains from UK land and property; foreign earnings, investment income and most foreign gains fall outside UK tax. You may still need to file, for example for rental income as a non-resident landlord, and you still tell HMRC about the move, as covered in our leaving the UK guide.
What split-year treatment means
Split-year treatment applies where the SRT makes you UK resident for 2026/27 but you moved during the year, and your facts fall within one of eight statutory cases set out in HMRC's Residence and FIG Regime Manual. The year is divided into a UK part, taxed as a resident, and an overseas part, taxed broadly as a non-resident. Your status stays 'resident' for the whole year; only the taxation is split.
Two preconditions apply before any case is considered: it is available only to individuals, and the leaver cases require UK residence in the previous tax year while the arriver cases require non-residence in it. Full detail on the conditions and priority rules is in our dedicated split-year treatment guide, and our split-year tool gives an initial read on which case might fit.
The eight cases in outline
- Case 1 (leaver): you start full-time work overseas, meet the sufficient-hours test to the following 5 April and stay within the UK day and working-day limits.
- Case 2 (leaver): you move abroad as the partner of someone qualifying under Case 1.
- Case 3 (leaver): you cease to have any home in the UK, spend fewer than 16 UK days afterwards and become tax resident in, or sufficiently connected to, the new country within six months.
- Case 4 (arriver): you start to have your only home in the UK and keep that position for the rest of the year.
- Case 5 (arriver): you start full-time work in the UK, meeting the sufficient-hours test over 365 days.
- Case 6 (arriver): you return to the UK after being non-resident the previous year because of full-time work overseas.
- Case 7 (arriver): you return to the UK as the partner of someone qualifying under Case 6.
- Case 8 (arriver): you acquire a UK home during the year, having had none at its start, and keep a UK home for the rest of the year and all of the following tax year.
Every case has detailed sub-conditions on days, hours and homes, and fixes its own split date; where more than one fits, statutory priority rules decide which applies, not you.
Automatic when it applies, unavailable when it does not
Split-year treatment is not an election. It applies automatically once a case's conditions are met in full, and is unavailable if they are not: you cannot opt out where a case applies, or choose it where none does.
- If the SRT makes you resident and no case fits, you are taxed as a UK resident on worldwide income and gains for the entire year, despite the move.
- If more than one case fits, the priority rules fix the case and the split date, not you.
- The claim goes on the SA109 residence pages (GOV.UK) with the case number and split date.
HMRC's free online service does not support the SA109, so a year-of-move return needs commercial software or an agent; the online deadline for the 2026/27 return is 31 January 2028.
Why a full non-resident year is cleaner where achievable
A full non-resident year removes the weakest link in most year-of-move positions: the case conditions. Nothing about your homes, partner's work or contract hours needs to satisfy a statutory checklist.
- Certainty: the automatic overseas tests are arithmetic. Fewer than 16 UK days is provable from travel records; 'ceasing to have a home' or 'sufficient hours overseas' invites argument.
- No split-date risk: a failed condition or later-than-expected split date can drag months of foreign income back into UK tax.
- Whole-year exclusion: foreign income and most foreign gains arising at any point in the year are outside UK tax.
- Simpler treaty position: one consistent non-resident year is easier to present to the other country's tax authority than a UK hybrid year.
- Simpler filing: often just the SA109 non-residence pages plus any UK-source schedules, which we prepare from £550 for non-resident and expat returns.
None of this makes split-year treatment second-rate. If your employer needs you in Dubai by October, a Case 1 split year is exactly what the rules are for; where the calendar is flexible the clean year wins.
Timing a departure around 6 April
Because the tax year runs from 6 April to 5 April, when you leave relative to 6 April largely decides which outcome is available. Leave in late March 2027 and the best you can usually do for 2026/27 is a split year with eleven months in the UK part; wait until just before 6 April 2027 and the whole of 2027/28 can be a clean non-resident year, subject to keeping UK days and ties within the SRT limits.
The logic reverses for arrivers: arriving shortly after 6 April keeps the previous year cleanly non-resident, which also matters for residence-history reliefs such as the four-year FIG regime.
Timing also interacts with income: bonuses, dividends and disposals falling either side of the departure date and 5 April can land in different years and different tax nets. Our relocation planner helps model the dates.
The traps: temporary non-residence and day counts
Neither route switches off the temporary non-residence rules (HMRC manual). If you had sole UK residence in at least four of the seven tax years before departure and your period of non-residence lasts five years or less, certain gains and income realised while away are taxed in the year you return. Escaping the rules needs more than five years away, in effect five years plus a day. Our guide on returning to the UK covers the detail; UK residential property gains are caught regardless, taxed at 18% or 24% for 2026/27 with an annual exempt amount of just £3,000.
Day counts are the other recurring failure. A UK day normally means presence at midnight, but the deeming rule can add non-midnight days once you pass 30 of them, and leavers face tighter sufficient-ties bands than arrivers, including the country tie and the 90-day tie. A first year abroad planned around 90 UK days can quietly fail if ties were miscounted.
Whichever outcome you aim for, keep contemporaneous records: travel logs, boarding passes, contracts and home arrangements. The burden of proving your position sits with you.
