Moving Abroad from the UK: Tax and Residency Traps to Avoid in 2025/26

UK Tax Residency Moving Abroad 2025/26: Key Summary

Leaving the UK is far more than booking a one-way flight and forwarding your post. HMRC has a strict Statutory Residence Test and unforgiving rules on Capital Gains Tax and Inheritance Tax. It also replaced the old non-dom system with a new regime in 2025/26.

This guide walks you through the pitfalls that catch people out and how to plan a clean break. It covers moves made in 2025/26 and the rule changes that apply from April 2026. Our Moving Abroad UK Tax & Residency Engine · SRT 25/26 helps you run the numbers.

Why Moving Abroad Is a Tax Event, Not Just a Life Event

When you emigrate, you are not simply leaving a country. You are changing your entire tax profile. UK residents pay tax on worldwide income and gains. Non-residents generally only pay UK tax on UK-sourced income, like rental profits or certain pensions.

The problem is that you do not choose your residency. HMRC decides, using the Statutory Residence Test (SRT). Get this wrong and you could face:

• tax bills in two countries
• penalties of £100 or more per late filing
• interest charges that quietly build up month after month

For someone with a modest investment portfolio, a mistimed sale can trigger a five-figure UK CGT bill that could have been avoided entirely.

The 2025/26 tax year matters more than most. From 6 April 2025, the long-standing "non-dom" remittance basis was abolished and replaced with a residence-based regime. That change affects arrivers, leavers and returners alike, and it continues to apply in 2026/27.

Anyone planning a move needs to understand the new landscape before packing a single box. Ideally, do this before selling any assets or drawing any pensions.

If you are juggling other big financial decisions this year, our guides on company car versus cash allowance and pension carry forward may also be useful reads.

UK Statutory Residence Test Explained for 2025/26 Expats

The SRT has three parts, applied in order. You work through them in sequence and stop at the first one that gives a definitive answer.

The Automatic Overseas Tests

These tests can conclusively make you non-resident. You are automatically non-resident if you meet any one of the following:

• You were UK resident in one or more of the previous three tax years and spend fewer than 16 days in the UK in the current tax year.
• You were non-resident in all of the previous three tax years and spend fewer than 46 days in the UK in the current tax year.
• You work full-time overseas and spend fewer than 91 days in the UK, with no more than 30 of those being UK workdays. "Full-time" broadly means an average of 35 hours per week with no significant breaks.

The full-time work overseas test is the route most emigrants rely on. But "full-time" and "significant breaks" have precise definitions. Any of the following could break the test and drag you back into UK residency:

• a long holiday back in Britain
• an unpaid sabbatical
• a redundancy

The Automatic UK Tests

These make you automatically UK resident. You will be UK resident if any of the following apply:

• You spend 183 days or more in the UK in the tax year.
• You have a home in the UK for at least 91 consecutive days, and at least 30 of those days fall in the tax year. You must also be present there on at least 30 days, and either have no overseas home or spend fewer than 30 days at it.
• You work full-time in the UK for any period of 365 days with no significant breaks, and at least one day of that period falls in the tax year. More than 75% of your workdays in that period must be UK workdays.

The Sufficient Ties Test

If neither set of automatic tests gives a clear answer, the sufficient ties test applies. HMRC counts your "ties" to the UK against your days spent in the country. The ties are:

1. A UK-resident spouse, civil partner, or minor child.
2. UK accommodation that is available to you for at least 91 consecutive days, where you spend at least one night in the year. If it is a close relative's home, you must spend 16 or more nights there.
3. Substantive UK work (40 or more workdays of more than three hours in the year).
4. More than 90 days spent in the UK in either of the previous two tax years.
5. More time in the UK than in any other single country (the "country tie", which applies to leavers only).

The more ties you have, the fewer days you can spend in the UK before becoming resident. A "leaver" with four ties, for instance, becomes UK resident after spending just 16 days in the country.

Split-Year Treatment for UK Tax Residency Moving Abroad 2025/26

Ordinarily, you are either UK resident for a whole tax year or not at all. Split-year treatment can divide the year into a resident part and a non-resident part, but only if you meet one of eight specific "cases".

The most common cases for leavers are:

• Case 1: starting full-time work overseas.
• Case 2: accompanying a partner who is starting full-time work overseas.
• Case 3: ceasing to have a home in the UK.

Each case has strict conditions. For Case 3, for example, you must:

• have no UK home for the rest of the tax year
• spend fewer than 16 days in the UK in the overseas part of the year
• become tax resident in another country within six months

Missing one condition means the whole tax year stays taxable in the UK.

Consider Sarah from Bristol. She sold her flat in October 2025 and moved to Dubai to work as a freelance tech contractor. Her irregular hours didn't meet the full-time overseas work test, so she was relying on Case 3.

She then flew back for three weeks over Christmas to help her parents move house. Those extra days pushed her over the 16-day Case 3 limit.

The result was that her Dubai earnings of around £95,000 for the rest of the tax year became fully taxable in the UK. That cost her roughly £28,000 in additional tax, which a two-week Christmas visit would have avoided.

UK Capital Gains Tax for Expats Moving Abroad in 2025/26

Selling assets around the time of a move is one of the most common ways emigrants get caught out. Many people believe that becoming non-resident lets you sell UK investments free of Capital Gains Tax. The reality is more nuanced.

Temporary Non-Residence Rules

Suppose you leave the UK, become non-resident, sell assets, and then return within five years. The gains on assets you owned before leaving can be taxed in the UK in the year you return. This is the "temporary non-residence" rule. It applies if you were UK resident in at least four of the seven tax years before you left. It exists specifically to stop people taking short tax-motivated breaks abroad.

The same rule can also catch some pension withdrawals and certain dividends from close companies taken while you are abroad.

To fully escape this trap, you need to remain non-resident for more than five years. The clock is strict, and returning even a few weeks too early can bring those gains back into UK tax.

If you want to estimate your potential CGT liability before and after your move, try our UK Capital Gains Tax Calculator.

UK Property Is Always in the Net

Even if you achieve permanent non-residence, gains on UK residential and commercial property remain within the UK CGT net. Non-resident CGT returns must be filed within 60 days of completion. Missing this deadline attracts automatic penalties, starting at £100 and rising quickly, even if no tax is due.

Rebasing and Timing

For assets that will escape UK CGT once you are non-resident, timing your disposals matters:

• Selling before you leave: UK CGT applies.
• Selling after becoming non-resident: if you stay non-resident long enough, there may be no UK CGT at all. However, your new country may tax the same gain.

UK Inheritance Tax for Expats: Residence-Based Rules from 2025/26

For decades, Inheritance Tax (IHT) depended on domicile, a common-law concept that is much harder to shed than residency. From 6 April 2025, this changed. The UK moved to a residence-based IHT system as part of the wider non-dom reforms.

Under the new regime, anyone who has been UK resident for at least 10 of the last 20 tax years becomes a "long-term resident". Long-term residents are within the scope of UK IHT on their worldwide estate.

This status continues after you leave the UK for a "tail" period of between three and ten years. The length depends on how long you were resident.

In practical terms, someone who lived in the UK for 15 years and then emigrates could still face UK IHT on their global estate for several years after leaving. Non-UK assets placed into trusts before the changes may still enjoy some protection, but the rules are complex and were tightened in 2025. UK assets such as property and directly held UK shares remain within UK IHT regardless of your residency.

Pensions and IHT from April 2027. From 6 April 2027, most unused pension funds and pension death benefits will count towards your estate for IHT. If you are still within your IHT tail when you die, a large UK pension pot could add significantly to your estate's IHT bill.

Wills and cross-border estates. A UK will may not be valid or effective in your new country:

• Some countries have forced heirship rules that override the English freedom to leave your estate to whoever you choose.
• Others require a local will for local assets.

Making a fresh will in your new country is often the safest approach. It should be drafted to work alongside your UK will rather than revoke it. Speak to a solicitor qualified in both jurisdictions.

If you want to estimate your estate's exposure, use our UK Inheritance Tax Tool.

Pensions, ISAs and Investment Accounts for UK Expats

Emigration affects almost every account and wrapper you hold, and the differences between them matter.

UK pensions. You can still pay into a UK personal pension after leaving, but tax relief is limited. For up to five tax years after you leave, you can contribute up to £3,600 gross per year and still receive basic-rate tax relief, even with no UK earnings.

How your pension income is taxed as a non-resident depends heavily on the double taxation agreement between the UK and your new country. Some treaties give sole taxing rights to your country of residence; others allow both countries to tax it. Getting this wrong can lead to double taxation until you claim it back, a process that can take a year or more.

If you are still building up pension pots before leaving, our pension carry forward guide explains how to make the most of unused allowances.

State Pension and voluntary National Insurance. From 6 April 2026, you can no longer pay cheaper Class 2 voluntary contributions for periods spent abroad. To pay voluntary contributions from overseas, you now need at least 10 years of UK residence or contributions. The voluntary contributions still available (Class 3) cost considerably more.

If you are relying on voluntary contributions to fill gaps in your State Pension record, check your eligibility and costs with HMRC before you go.

ISAs. You cannot pay into a UK ISA once you stop being UK resident. There is a narrow exception for Crown employees serving overseas and their spouses or civil partners.

Existing ISAs keep their UK tax-free status, but almost no other country recognises it. Most countries will tax the income and gains inside your ISA as if it were an ordinary account.

Investment bonds and offshore funds. Non-reporting offshore funds can generate "offshore income gains", which are taxed as income rather than capital gains. Some products marketed to expats have very unfavourable UK tax treatment if you ever return.

Ongoing UK Income While Abroad: Landlords, Dividends, and Double Taxation

Many emigrants keep UK income sources, such as rental properties, dividends, freelance clients or director's fees.

The Non-Resident Landlord Scheme. If you rent out UK property while non-resident, basic-rate tax must be withheld from the rent. This is done by your letting agent or, if there is no agent, by tenants paying more than £100 per week directly. You can avoid this by registering with HMRC's Non-Resident Landlord Scheme, which lets you receive rent in full and settle your tax through Self Assessment.

The government plans to raise tax rates on property income by 2 percentage points from April 2027, so budget for a higher bill on UK rental profits from 2027/28.

Register for the Non-Resident Landlord Scheme to avoid unnecessary withholding and simplify your tax affairs.

UK dividends and interest. Non-residents generally pay no UK tax on UK dividends or bank interest beyond any tax taken at source, thanks to the "disregarded income" rules. However, using this treatment means giving up your personal allowance against your other UK income.

Two upcoming rate rises can change which option works out better:

• Dividend tax rates rose to 10.75% (ordinary) and 35.75% (upper) from April 2026.
• Savings income rates are due to rise by 2 percentage points from April 2027.

The best treatment depends on your overall mix of UK income, so it is worth modelling both scenarios.

Directors and freelancers. If you keep a UK limited company or continue to serve as a director, several issues come into play:

• where the company is tax resident
• where you are when you carry out your duties
• whether your work creates a taxable presence (a "permanent establishment") in your new country

This is one of the areas where professional advice pays for itself many times over.

For more on avoiding double taxation, see our UK Double Tax Agreement Guide.

Practical Steps Before You Leave: UK Tax Residency Moving Abroad 2025/26 Checklist

Here is a checklist to work through in the six to twelve months before you leave. Most people can get through it in a couple of focused evenings, and it can save thousands in avoidable tax:

1. Confirm your expected residency status under the SRT for both the year you leave and the year after.
2. Check whether split-year treatment will apply and which case you are relying on.
3. Model the CGT position on any assets you might sell around the move.
4. Review pension contributions and consider using unused allowances before leaving.
5. Update your will and consider the IHT implications under the new residence-based rules, including pensions entering IHT from April 2027.
6. Check your National Insurance record and whether you qualify for voluntary contributions from abroad under the post-April 2026 rules.
7. Notify HMRC of your departure using form P85 or via Self Assessment.
8. Register for the Non-Resident Landlord Scheme if letting UK property.
9. Check the double taxation agreement between the UK and your destination.
10. Keep meticulous records of travel days, workdays and UK ties.
11. Get tax advice for your destination country before you arrive, not after.

If part of your reason for moving is to get a fresh financial start, tackling any outstanding UK debt first makes sense. Our guide on debt payoff strategies walks through the options.

Common UK Tax Residency Mistakes When Moving Abroad

A few patterns come up again and again in HMRC disputes and expat forums:

• Selling a UK rental property in the tax year you leave without checking whether it still falls within CGT.
• Assuming a P85 filing "closes" your UK tax affairs when Self Assessment is still required.
• Taking a large pension lump sum in the year you leave and being taxed on it as if resident.
• Returning to the UK for a family emergency and staying too long, breaking the full-time work overseas test.
• Keeping a UK "available home" without realising it counts as a residency tie.
• Failing to file non-resident CGT returns within 60 days on UK property sales.
• Ignoring your destination country's own reporting rules for foreign assets.

UK Tax Residency Moving Abroad 2025/26: Frequently Asked Questions

Readers often ask the same three questions when they start planning a move.

"Do I really need an accountant if my situation is simple?" If you have only UK employment income and a modest ISA, you can handle the day-count and P85 yourself. Anyone with property, a limited company, share options or a pension approaching drawdown should budget for professional advice. Fees of £500 to £1,500 for a proper exit review routinely save many times that.

"What if I change my mind and come back?" You can return at any time. However, under the temporary non-residence rules, coming back within five years can reopen gains you thought were settled. Plan as if you might return, not as if you never will.

"Will HMRC really check?" Yes. HMRC receives data from several sources:

• foreign tax authorities, under the Common Reporting Standard
• UK letting agents
• Companies House
• pension providers

Discrepancies are increasingly picked up automatically. Getting things right first time is far cheaper than defending an enquiry three years later.

UK Tax Residency Moving Abroad 2025/26: Conclusion

Moving abroad from the UK is a genuine opportunity for a financial reset, but only if you handle the tax side of leaving properly. Several sets of rules can catch out the unwary:

• the Statutory Residence Test
• the split-year rules
• the temporary non-residence provisions
• the new residence-based IHT regime

A single mistimed asset sale or an underestimated day count can turn a well-planned move into an expensive one.

The good news is that most pitfalls are avoidable with careful planning and clear records. Model your day counts, understand your ties, keep documentation, and take advice from someone who understands both countries' tax systems.

Our Moving Abroad UK Tax & Residency Engine · SRT 25/26 is a solid starting point for running through the SRT and stress-testing your planned departure date. It takes about 15 minutes and gives you a clear picture of where you stand.

Do the work upfront, and you can leave the UK on your own terms rather than HMRC's.

Sources

• HMRC RDR3: Statutory Residence Test guidance (gov.uk)
• HMRC: Tax on foreign income and residency (gov.uk)