Working abroad: Getting your UK tax residence right How to manage your UK tax position when living or working overseas Spending time abroad for work has become much more common. Whether you're relocating for a new role, taking an overseas posting, working remotely from another country or returning to the UK after several years away, it's important to understand how UK tax rules apply. One of the biggest surprises for many people is that leaving the UK does not automatically make you non-resident for tax purposes. Equally, becoming non-resident does not necessarily remove you from the UK tax system altogether. Understanding your tax position before you leave, while you're abroad and before you return can help avoid unexpected tax bills and unnecessary complications later. Why tax residence matters Your UK tax residence status determines how much of your income and gains fall within the UK tax system. Generally speaking: UK residents are taxed on their worldwide income and gains, subject to available reliefs and double tax treaties. Non-UK residents are usually taxed only on UK-source income, certain UK gains and a limited range of other UK-related income. Getting your residence status wrong can be expensive. If HMRC later concludes that you remained UK resident when you believed you were non-resident, overseas salary, foreign investment income and offshore gains could all become subject to UK tax, together with interest and potential penalties. That's why residence planning is something to consider before you move rather than after the tax return deadline arrives. Understanding the Statutory Residence Test Since 2013, UK tax residence has been determined by the Statutory Residence Test (SRT). The test follows a specific order: Automatic overseas tests Automatic UK tests Sufficient ties test If you meet one of the automatic overseas tests, you are generally non-UK resident for the tax year. If not, the automatic UK tests are considered. If neither set of tests gives a clear answer, the sufficient ties test applies. At the heart of the SRT is day counting. In most cases, a day counts as a UK day if you are present in the UK at midnight. There are limited exceptions, including certain transit days and exceptional circumstances. There is also a deeming rule that can catch people making repeated short visits. If you were UK resident in one of the previous three tax years, have at least three UK ties and spend more than 30 days in the UK without being here at midnight, some of those days can still count towards your UK day total. For anyone close to the limits, accurate records are essential. The automatic overseas tests The clearest route to non-residence is meeting one of the automatic overseas tests. You will generally be non-UK resident if: You were UK resident in one or more of the previous three tax years and spend fewer than 16 days in the UK during the current tax year. You were not UK resident in any of the previous three tax years and spend fewer than 46 days in the UK. You work full-time overseas, have no significant break from overseas work, spend fewer than 91 days in the UK and work more than three hours in the UK on fewer than 31 days. For many people moving abroad for work, the full-time overseas work test is the most relevant. However, it is also one of the easiest tests to fail accidentally through too many UK workdays, extended return visits or gaps between overseas contracts. For SRT purposes, full-time overseas work broadly means averaging at least 35 hours per week overseas under HMRC's detailed calculation rules. A significant break is usually a period of 31 consecutive days or more without overseas work, although certain absences such as annual leave and sickness can be ignored. The automatic UK tests If none of the overseas tests apply, the UK tests are considered. You will generally be UK resident if: You spend 183 days or more in the UK during the tax year. You have a UK home available for at least 91 continuous days, use it for at least 30 days, and have little or no qualifying overseas home. You work full-time in the UK over a 365-day period and more than 75% of your workdays fall in the UK. The UK home test often catches people out. Many individuals assume they have left the UK because they live and work overseas, but continue to retain and regularly use a UK property. The position needs careful review because retaining access to a UK home can have a significant impact on residence status. The sufficient ties test If neither automatic test provides an answer, the sufficient ties test applies. The more ties you have to the UK, the fewer days you can spend here before becoming UK resident. The five main ties are: Family tie Accommodation tie Work tie 90-day tie Country tie The country tie only applies to people leaving the UK and is met when the UK is the country where you spend the greatest number of days. This explains why two people can spend exactly the same number of days in the UK but reach different residence outcomes. Split year treatment Normally a tax year is treated as either fully resident or fully non-resident. However, split year treatment may divide the year into a UK part and an overseas part. There are eight separate circumstances where split year treatment can apply, including: Starting full-time work overseas Ceasing to have a UK home Accompanying a partner who starts full-time work overseas Starting full-time work in the UK Establishing a UK home For those leaving the UK for employment abroad, starting full-time overseas work is often the most common route. Split year treatment is not automatic and must be claimed correctly through the SA109 supplementary pages of your Self Assessment return. What remains taxable if you're non-resident? Becoming non-resident does not remove all UK tax obligations. UK tax may still apply to: Rental profits from UK property Employment income relating to duties carried out in the UK Certain UK pensions Gains on UK property and land Certain UK-source investment income Non-residents selling UK property will usually need to report the disposal to HMRC within 60 days of completion, even where no tax is payable. Landlords may also need to register under the Non-Resident Landlord Scheme, under which tax can be deducted from rental income unless HMRC approves gross payment. Double tax treaties can help prevent the same income being taxed twice, although the exact position depends on the treaty involved. National Insurance matters too Income tax residence and National Insurance follow different rules. Depending on your circumstances, you may continue paying UK National Insurance while working abroad, particularly where: You are temporarily posted overseas by a UK employer. A social security agreement applies. An A1 certificate or certificate of coverage is available. There has also been an important change to voluntary National Insurance. From 6 April 2026, people can no longer pay voluntary Class 2 National Insurance contributions while abroad. Class 3 contributions may still be available, but new applications generally require either: 10 continuous years of UK residence, or 10 qualifying years on your National Insurance record. Anyone moving overseas should review their State Pension position before they leave. The four-year FIG regime The rules for people arriving in or returning to the UK changed significantly from 6 April 2025. The remittance basis has been abolished and replaced by a residence-based system. Under the new Foreign Income and Gains (FIG) regime, qualifying individuals may claim relief on eligible foreign income and gains during their first four years of UK residence. To qualify, you generally need to be returning after at least 10 consecutive tax years of non-UK residence. There are two important points to remember: Claiming FIG relief means losing your UK Personal Allowance and Capital Gains Tax annual exempt amount. The four-year period cannot be extended if relief is not claimed in a particular year. Former remittance basis users may also be able to use the Temporary Repatriation Facility, which allows certain pre-6 April 2025 foreign income and gains to be brought to the UK at reduced tax rates. The published rates are: 12% for 2025/26 and 2026/27 15% for 2027/28 The facility closes after 5 April 2028. Beware temporary non-residence rules One of the most common traps is assuming that a short move abroad allows income or gains to be realised tax-free. The temporary non-residence rules can bring certain income and gains back into the UK tax net when you return. They can apply to: Capital gains Dividends from close companies Certain pension payments Certain company winding-up distributions A notable change announced in the November 2025 Budget removed the post-departure trade profits carve-out for dividends and distributions from close companies. For individuals returning to the UK on or after 6 April 2026, all such dividends received while temporarily non-resident can fall within the rules regardless of when the profits arose. In most cases, you need to be non-resident for at least five complete tax years for the temporary non-residence rules not to apply. Keep good records If HMRC ever challenges your residence position, the burden of proof generally rests with you. Useful records include: Travel records and boarding passes Day-by-day UK presence logs Accommodation records Employment contracts Work calendars Evidence relating to UK homes Family records where relevant For most people, a simple spreadsheet recording travel dates and UK workdays is sufficient. Planning before you leave Before moving abroad, consider: How many UK days you can spend here Whether you satisfy the full-time overseas work test Whether a UK property creates issues Whether split year treatment is available How UK work duties will be taxed Whether rental income requires NRL registration National Insurance implications Double tax treaty protection It's also important to remember that overseas remote working can create tax, payroll, employment law and corporate tax issues for your employer as well. Planning before you return  Before returning to the UK, review: Whether the FIG regime is available Whether temporary non-residence rules apply The timing of income and gains Whether foreign assets should be sold before returning Whether the Temporary Repatriation Facility may help The impact of your chosen return date In some cases, returning on 5 April rather than 6 April can produce a very different tax outcome. Final thoughts Working abroad can be tax-efficient with the right planning. Without it, it can create unexpected tax bills, reporting obligations and complications both in the UK and overseas. The most important decisions are often made before the move takes place. Understanding your residence position, managing your UK ties and planning your return can make a significant difference to the eventual tax outcome. If you're planning to move overseas, already working abroad, or considering a return to the UK, it's worth reviewing your position early. A little planning now can save a lot of time, tax and stress later. If you'd like advice tailored to your circumstances, please get in touch.