Moving abroad doesn't automatically end your tax ties with home. What you owe depends on where you're treated as tax resident, which is not always the same as where you live. Getting this right before you leave is one of the most valuable things you can do.
Tax residence is a test, not a choice
Most countries decide residence using rules about days spent there, homes, work and family ties. In the UK this is the Statutory Residence Test. It weighs how many days you spend in the UK against your ties there, such as a home, family, work or time spent in previous years.
The practical point: you can live abroad and still be UK tax resident if you keep strong ties or spend too many days back. Your new country may also treat you as resident. Where both do, a double tax agreement between the two countries usually decides which one gets first claim.
The year you leave can be split
In the UK, the tax year runs from 6 April to 5 April. If you leave part-way through, you may qualify for split-year treatment. This divides the year into a UK part and an overseas part, so income you earn abroad after you leave isn't taxed as if you were still living in the UK.
Split-year treatment only applies if you meet one of several specific cases, such as:
- leaving to work full-time overseas
- joining a partner who is working full-time overseas
- ceasing to have a UK home, with strict limits on visits back afterwards
The conditions are detailed and easy to trip over, for example by keeping a UK home available or spending a few too many days back.
Income you leave behind
Even as a non-resident, you may still pay tax at home on income that comes from there. Common examples:
- Rental income from a property you let out
- Pensions paid from your home country
- Some investment income and gains, especially on property
In the UK, landlords who live abroad have specific rules on how rent is taxed and collected. Double tax agreements often decide which country taxes which income, and how you avoid paying twice.
Telling the tax office
In the UK, you normally tell HMRC you're leaving either through your Self Assessment return or, if you don't file one, by completing form P85. This can also help you reclaim tax overpaid in the year you leave.
Questions to ask a tax adviser before you go
- Will I be non-resident from the date I leave, or from the next tax year?
- Do I qualify for split-year treatment, and what could break it?
- How many days can I safely spend back home each year?
- How will my rental income, pension and investments be taxed in each country?
- Is there anything I should sell, or not sell, before I leave?
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This guide is general information, not tax, legal, financial or immigration advice. Rules change and every situation is different. Expat Confidant introduces you to independent specialists who can advise on your circumstances. Last reviewed November 2026.