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Country guide

For Britons

The UK has no exit tax, but whether you have left is decided by a statutory test of days and ties, not by the date of your flight. Since April 2025 inheritance tax follows long term residence, so it can follow you for 3 to 10 years after you go. Done properly, you can keep your UK property, pensions and passport.

How it taxes
Residents on worldwide income and gains; non residents on UK income and gains on UK land and property
Leaving test
Statutory Residence Test: day counts plus UK ties, applied each tax year
Exit tax
None, but gains can be taxed if you return within 5 years, and inheritance tax has a 3 to 10 year tail
Dual citizenship
Allowed
General information, not tax advice. Astute Expat is not a firm of tax advisers, and this guide does not take your circumstances into account. Rules change and every situation is different, so speak to your accountant before you act. Our team includes accountants who know the United Kingdom and assist our clients when they leave, so the move is done properly and nothing is missed.

How tax residency works

UK residence is decided separately for each tax year, which runs from 6 April to 5 April, under the Statutory Residence Test, or SRT. You work through it in order: the automatic overseas tests, then the automatic UK tests, then the sufficient ties test. The first test that gives an answer settles your status for that year.

A day generally counts if you are in the UK at midnight. Leavers, meaning people who were UK resident in any of the previous three tax years, get tighter limits than new arrivals: the more UK ties you keep, the fewer days you can spend in the UK and still be non resident.

  • Automatic overseas tests: fewer than 16 days in the UK in the tax year, or full time work abroad (an average of 35 hours a week) with fewer than 91 days in the UK and fewer than 31 days on which you work there for more than three hours.
  • Automatic UK tests: 183 days or more in the UK, having your only home in the UK, or full time work in the UK.
  • Sufficient ties test: leavers count five ties (family, accommodation, work, more than 90 days in the UK in either of the previous two years, and the country tie, meaning more midnights in the UK than in any other country). With 16 to 45 days in the UK, four ties make you resident; with 46 to 90 days, three; with 91 to 120 days, two; above 120 days, one.
  • Split year treatment: in the year you leave, the tax year can be split so that foreign income after your departure falls outside UK tax. It applies only if you meet one of the statutory cases, such as starting full time work abroad or ceasing to have any home in the UK.

Leaving properly

No form makes you non resident. HMRC, the UK tax authority, looks at the facts, so the aim is a clean, documented break: a real home abroad, a planned day count and as few UK ties as is practical.

  1. 01

    Plan your first two tax years

    Map your day count and ties against the SRT before you go. The year you leave and the year after are when most residence claims fail.

  2. 02

    Tell HMRC you are leaving

    If you are not in Self Assessment, file form P85 with your P45 if you have one. If you are, report your departure on the residence pages, form SA109, and claim split year treatment there.

  3. 03

    Set up a real home abroad

    Rent or buy a home in your new country and register as a resident there. It supports split year treatment and the tie breaker in any tax treaty.

  4. 04

    Arrange your UK property

    If you will let your home, register with the Non Resident Landlord Scheme. Keep your purchase and improvement records for the eventual sale.

  5. 05

    Check your National Insurance record

    Look for gaps before you go. Voluntary contributions from abroad became harder to make from April 2026.

  6. 06

    Keep evidence each year

    Keep a day count log, travel records and proof of your overseas home. They are your evidence if HMRC asks.

Exit tax, property and investments

The UK does not tax unrealised gains when you leave. The catch is temporary non residence: if you were UK resident in at least 4 of the 7 tax years before you left and you come back within 5 years, gains you made while away on assets you already owned, and some income such as dividends from close companies, are taxed in the year you return. A sale abroad only stays outside UK tax if you stay away for more than five years.

UK land and property stay taxable whoever owns them. Non residents pay capital gains tax on UK homes, commercial property and shares in UK property rich companies, and must report each sale to HMRC within 60 days of completion, even when no tax is due. For property you already owned, the gain can usually be measured from its value in April 2015 for homes or April 2019 for other property. Rent is paid under the Non Resident Landlord Scheme, so your agent or tenant withholds basic rate tax unless HMRC approves you to receive it gross.

Private residence relief, the exemption for your home, still covers the last nine months of ownership. For any tax year in which you are non resident, though, a UK home only counts as your residence if you spend at least 90 midnights in it, or in your UK homes combined, that year.

Since 6 April 2025, inheritance tax depends on long term residence instead of domicile. If you were UK resident for at least 10 of the previous 20 tax years, your worldwide estate stays within UK inheritance tax for 3 to 10 tax years after you leave: 3 years if you were resident for 10 to 13 years, plus one year for each further year, up to 10. UK assets such as UK property stay within inheritance tax whatever your residence, and from 6 April 2027 most unused pension funds also count towards your estate.

You can keep an ISA, the UK tax free savings account, after you leave and it stays tax free in the UK, but you cannot add new money while non resident. Your new country may tax the income, so check how it is treated there.

Pensions and social security

Private and workplace pensions can stay in the UK. Many tax treaties give the taxing right on private pensions to the country you live in, and HMRC can then issue a code so no UK tax is deducted; without a treaty, UK tax applies. Moving a pension to an overseas scheme, known as a QROPS (qualifying recognised overseas pension scheme), triggers a 25% overseas transfer charge unless you live in the same country as the scheme, and since April 2025 that applies to schemes in the European Economic Area too.

The State Pension can be paid anywhere, but it only rises each year if you live in the UK, the European Economic Area, Gibraltar, Switzerland or a country with a social security agreement that provides for increases, such as the United States or Turkey. Elsewhere, including Paraguay, Panama, Uruguay, the UAE, Georgia, Australia and Canada, it stays at the rate you first receive abroad.

Voluntary National Insurance changed on 6 April 2026. You can no longer pay the cheaper Class 2 contributions for time abroad, and paying voluntary Class 3 contributions (£18.40 a week for 2026 to 2027) now requires 10 years of continuous UK residence or 10 years of paid contributions. You need 35 qualifying years for the full new State Pension, so check your record before you leave.

Dual citizenship

The UK allows dual citizenship. You keep your British citizenship when you acquire another nationality, you do not need to apply or tell the Home Office, and living abroad does not affect it however long you are away.

Keep your British passport valid. Dual British citizens cannot use an electronic travel authorisation to enter the UK, so you travel on your UK passport or a certificate of entitlement. Our citizenship programs in St Kitts and Nevis, Turkey and Vanuatu allow you to keep your British citizenship alongside the new one.

Avoid these

Common mistakes when leaving

  • Treating form P85 as the moment you become non resident. It only tells HMRC you are leaving; the SRT decides your status.
  • Keeping a UK home available and visiting often in the first years. A family tie, an accommodation tie and more than 90 days in a recent year can leave you resident on surprisingly few days.
  • Selling shares or a business soon after leaving and then returning within five years, which brings the gain back into UK tax.
  • Missing the 60 day report when selling UK property as a non resident, which brings penalties even when no tax is due.
  • Assuming inheritance tax ends the day you leave. The long term residence tail lasts 3 to 10 tax years, and UK assets stay in scope.
  • Retiring to a country where the State Pension is frozen without factoring in the lost increases, or leaving without checking National Insurance gaps.
FAQ

Questions from Britons

Do I still pay UK tax after I leave?

Once you are non resident under the SRT, only on UK income and gains, such as UK rent, gains on UK property, UK employment income and some UK pensions. British citizens can usually keep their personal allowance as non residents, and a treaty with your new country may reduce UK tax further. Foreign income and gains fall outside UK tax.

Can I keep my house in the UK?

Yes. Rent is taxed in the UK through the Non Resident Landlord Scheme, and a sale is reported to HMRC within 60 days. A home that is available to you for 91 days in a row, and where you spend even one night in the tax year, counts as an accommodation tie under the SRT, so letting it on a long tenancy usually helps.

Can I keep my UK pension and ISA?

Yes. Pensions can stay in the UK and are paid to you abroad, with the tax position depending on any treaty with your new country. An ISA stays open and tax free in the UK, but you cannot pay into it while non resident, and your new country may tax its income.

When does UK inheritance tax stop applying to me?

If you were UK resident for 10 of the previous 20 tax years, your worldwide assets stay within UK inheritance tax for 3 to 10 tax years after you leave, depending on how long you lived in the UK. UK assets, such as UK property, stay within scope permanently.

Do I lose my British citizenship if I take another?

No. The UK allows dual citizenship and does not require you to tell it. Keep a valid British passport, as dual citizens enter the UK on their UK passport or a certificate of entitlement.

What happens if I move back to the UK later?

If you return within five years, gains and some income from your time abroad can be taxed on your return. If you return after at least 10 consecutive tax years of non residence, the foreign income and gains regime that replaced the non dom rules in April 2025 can leave your foreign income and gains untaxed in the UK for your first four years back.

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