# Split-year treatment when moving abroad or moving to the UK > Moving country part-way through a tax year does not automatically split the year. Learn how UK split-year treatment works under the Statutory Residence Test. Canonical: https://yestax.co.uk/tax-help/split-year-treatment-moving-abroad-or-uk Last updated: 2026-09-10 Published: 2026-09-03 Author: YesTax Editorial Team Reviewed by: Qualified Expat Tax Advisor (CTA) > **Key Takeaways for Moving Abroad or to the UK:** > - **Not an Automatic Split:** You cannot just pick your flight date. You must meet the criteria of one of the **8 statutory split-year cases** (Cases 1–3 for leaving, Cases 4–8 for arriving). > - **Overseas Income Protection:** Once split-year treatment applies, foreign earnings arising during the overseas part of the year are generally free from UK Income Tax. > - **Must Be Claimed on Form SA109:** Split year treatment is not granted automatically by HMRC—you must formally claim it via the Residence supplementary pages (**SA109**) of your Self Assessment return. If you leave or arrive in the UK part-way through a tax year, **do not simply divide the year at your moving date**. Split-year treatment is a statutory set of rules, not an election to choose whichever date gives the lowest tax. The first step is still to determine your residence status for the tax year under the Statutory Residence Test. ## Residence first, split year second HMRC describes split-year treatment as relevant where you are UK resident for the tax year but the conditions allow that year to be divided into a UK part and an overseas part. Broadly: - departure situations are covered by split-year **cases 1 to 3**; - arrival situations are covered by **cases 4 to 8**. Each case has its own detailed conditions. ## Leaving the UK does not automatically end UK residence Suppose you leave Britain in September to start a job abroad. The intuitive answer is that you became non-resident in September. The statutory answer may be different: 1. you may remain UK resident for the whole tax year under the Statutory Residence Test; 2. if you qualify for a departure split-year case, specified tax rules then treat part of that resident year as an overseas part; 3. if you do not meet a split-year case, the whole tax year can remain a UK-resident year despite the move. That distinction can materially affect foreign income, investment gains and other transactions after departure. ## Arriving in the UK can create the same issue in reverse A person who moves to the UK during a tax year may become resident for the year as a whole, with split-year treatment potentially carving out an earlier overseas part. The relevant arrival case depends on facts such as homes, work and family circumstances. It is therefore dangerous to assume that only income after the physical move date is relevant to the UK return. ## Full-time work and homes often matter The split-year cases cover different factual patterns. They include scenarios linked to matters such as: - starting full-time work overseas; - accompanying a spouse or partner who starts full-time work overseas; - ceasing to have a UK home; - starting to have a UK home; - starting full-time work in the UK; - returning after a period of working abroad. The exact conditions are detailed and include timing, day-count and work requirements. ## More than one case can apply HMRC says you should consider all split-year cases that might fit your facts. If more than one case is satisfied, priority rules determine which one applies and therefore the date at which the split occurs. This can matter because two plausible cases do not necessarily produce the same split date. ## Split year does not mean every tax rule splits neatly The UK part and overseas part affect the treatment of income and gains under specific statutory rules, but not every tax issue can be reduced to “before move = foreign, after move = UK”. Other regimes can still matter, including: - temporary non-residence; - UK-source income while overseas; - non-resident Capital Gains Tax on UK property; - double-taxation treaties; - payroll and employment sourcing; - foreign income and gains rules after 6 April 2025. ## Example: leaving to work abroad Imagine someone leaves the UK on 1 September 2026 and begins a full-time overseas role immediately. Useful questions include: - Were they UK resident under the SRT for 2026 to 2027? - Do they meet the full-time overseas work split-year case? - How many UK days and UK workdays occur after departure? - Did they keep a UK home available? - Did a spouse or children remain in the UK? - When exactly did the overseas employment begin? The flight date is evidence. It is not the whole tax analysis. ## What to gather before asking for help Prepare: 1. departure or arrival date; 2. complete UK travel calendar for the tax year; 3. employment start and end dates; 4. workdays in the UK and overseas; 5. UK and overseas home availability dates; 6. spouse or partner residence and work facts; 7. where minor children lived; 8. major dividends, gains, bonuses or asset sales around the move; 9. prior-year UK residence history. The useful question is **whether a statutory split-year case applies and what split date that case produces**, not merely what date you changed address. ## Common questions ### Does the UK tax year automatically split on the day I leave the country? No. Split-year treatment only applies if you qualify as UK resident for the year and satisfy the strict statutory conditions of one of the 8 split-year cases. ### How many split-year cases are there under HMRC rules? HMRC's RDR3 guidance specifies 8 cases: Cases 1-3 for departing the UK (working full-time abroad, accompanying spouse, ceasing UK home) and Cases 4-8 for arriving in the UK. ### How do I claim split year treatment on my tax return? You must file a Self Assessment tax return including the Residence, Remittance Basis etc. supplementary pages (form SA109) and declare the split-year date and applicable case. ## Primary sources - [HMRC: RDR3 Statutory Residence Test — split years](https://www.gov.uk/government/publications/rdr3-statutory-residence-test-srt/guidance-note-for-statutory-residence-test-srt-rdr3) --- This page is general information, not individual tax, legal or financial advice.