Split Year Treatment: How to Break UK Tax Residence Without Getting It Wrong

Most people who are planning to leave the UK focus on day counts. How many days can I spend in the UK? When do I need to be gone by? What ties do I have? What they often miss is that the statutory residence test can make you a full year UK tax resident from a single day in the country. Day counts do not always come into it. In Episode 22 of the Tax Compass Podcast, Simon Roue and Laura Sant take on split year treatment: what it is, why it exists, and why getting it wrong can expose you to UK tax on your worldwide income for an entire year. **What they cover:** Split year treatment exists because the UK tax year runs to its own calendar, out of step with most other countries. When someone arrives in or departs from the UK part way through a tax year, the year can be split so that UK tax residence applies only to the relevant portion. But the starting point is always the full year position. You have to have been UK tax resident before split year treatment becomes relevant at all. On the way out, there are three cases. Case one covers starting full-time work outside the UK. Case two covers being the partner of someone starting full-time work outside the UK. Case three covers ceasing to have a home in the UK, and is the only route available to retirees who are not working. The outbound cases are significantly more technical than the inbound ones, and case one comes with a requirement that is easy to overlook: you must also meet the full-time work overseas test in the following tax year. That requirement exists for a reason. HMRC will not allow someone to split their year on the basis of starting work overseas if they are back in the UK within a few months. For most people going on a genuine overseas assignment this will not be an issue. But for anyone whose circumstances change unexpectedly, for example losing a job abroad, it can create a serious problem. Case three, ceasing to have a home in the UK, carries its own complexity. From the point you cease to have a home, you are limited to a maximum of 15 midnights back in the UK. A home has its everyday meaning under the statutory residence test, so a property that has been emptied of belongings and rented out no longer qualifies as a home even if it has not been sold. But people who plan to spend a few extra days in the UK after moving out need to be careful: those days start counting immediately. On the way in, the rules are more numerous and the matrix of cases more involved. The practical reality is straightforward: if you arrive in the UK, take a job and get a home, you will be tax resident from the point those things happen. The technical complexity on the inbound side is mostly relevant to edge cases, such as someone who arrives late in the tax year and may still fall within the automatic non-residence tests. Simon and Laura also cover the planning opportunities that can arise in the gap between breaking UK tax residence and becoming tax resident somewhere else. A classic example is someone who leaves the UK in October to start work in Spain but does not become Spanish tax resident until the 1st of January. Employment income sourced to where the work is done can create genuine planning opportunities in that window. Pension income is a different matter, and Simon flags this directly: pension income is sourced to the UK and will remain taxable there unless a double tax treaty provides relief. The consistent message throughout is the same one LSR Partners gives to every client considering a move: have the conversation before you make the move. The rules around split year treatment are technical enough that the wrong sequence of events, even by a matter of days, can close off options that would otherwise have been available. lsrpartners.com Subscribe for more tax guidance for expats and globally mobile individuals. Brought to you by LSR Partners – helping you pay the right tax in the right place at the right time. 📲 Book a call with us to talk about your situation: https://lsrpartners.com 🎧 Catch up on all past episodes: https://lsrpartners.com/podcast-videos