What You Need To Know About UK Tax Rules For Moving Abroad

Published by Nida Umair posted in Tax Planning, Tax Services, Taxes on 5 January 2026

Many people move to the UAE for a fresh start, career growth, family reasons, or lifestyle. UK tax rules for moving abroad sit somewhere in the mix. While it may not always be the primary motivator, it can make a significant difference between a smooth transition and an unexpected financial burden in the future.

If you are leaving the UK, the aim is simple. Get your UK tax residence position clear, plan the year you leave, and tidy up the areas HMRC tends to scrutinise.

This guide covers the practical steps we see most often, with a focus on the 2025/26 tax year that ends on 5 April 2026.

10 UK Tax Rules For Moving Abroad

Step 1: Work Out When You Actually Become Non-UK Resident

Leaving the UK does not automatically make you a non-resident from the day you board the plane. UK tax residence is worked out under the Statutory Residence Test (SRT), which uses a mix of day counts and “ties” to the UK.

The quick reality check

You can be “usually non-resident” if you meet one of the overseas tests, for example:

You spend fewer than 16 days in the UK in a tax year (or 46 days if you were not UK resident in the previous 3 tax years), or
You work full-time overseas and keep UK days within specific limits (including fewer than 91 UK days and no more than 30 UK workdays).

If you do not meet the criteria for the automatic overseas tests, you will then be subject to the ties test. That is where people get caught out.

Common UK ties that change the answer

The SRT ties test looks at connections such as family, accommodation, work, and prior UK presence.

In plain terms, the more ties you keep, the fewer days you can safely spend in the UK without drifting back into the UK tax residence position.

Step 2: Split-Year Treatment Can Matter In The Year You Leave

The UK tax year runs from 6 April to 5 April. In the year you leave, you may still be a UK resident for the year under the SRT but eligible for split-year treatment, which can treat part of the year as “overseas” for UK tax.

Split-year rules are case-based. A frequent one is where you leave to work full-time overseas, but the facts need to line up.

This is one reason planning timing matters. A move on 10 March 2026 can look very different from a move on 10 April 2026.

Step 3: Use Your ISA Allowances Before You Become Non-Resident

If you move abroad and become a non-UK resident, you cannot pay into your ISA (unless you are a Crown employee overseas or their spouse or civil partner). You can keep the ISA open and retain UK tax relief on what is already inside it.

Practical planning idea (before leaving):

Consider using the current year’s ISA allowance while you are still a UK resident.
Review whether you want to rebalance investments inside the ISA before departure, because future contributions may pause for years.

What about Junior ISAs?

A Junior ISA is for a child who is under 18 and living in the UK, with a limited exception for children of Crown servants.

If the family is relocating, do not assume contributions can continue as normal. Check the child’s residence position and confirm with the provider.

Step 4: Pensions, Contributions, And The “Five Tax Years” Point People Miss

Pension contributions can still work well around a move, but the rules need handling carefully.

Annual allowance

The standard annual allowance is £60,000 for many people, but it can be lower in some cases, and carry forward may be available depending on your circumstances. (This part is very fact-specific.)

If you are non-UK resident

Tax relief on personal contributions depends on whether you are a “relevant UK individual” and whether you have relevant UK earnings.

Key points from HMRC guidance:

The general limit for relief is the higher of £3,600 or your relevant UK earnings chargeable to UK tax.
If you are no longer a UK resident, you can still be treated as a relevant UK individual if you were a UK resident at some time in the five tax years before the tax year in question and you were a UK resident when you joined the scheme.

If you want to make larger, tax-relieved contributions, the window before departure often matters. After departure, relief may be more limited unless you still have qualifying UK earnings.

Step 5: Do Not Ignore CGT Planning Before You Leave

Capital Gains Tax planning is often overlooked because people assume, “The UAE has no personal income tax, so I’m fine.” The UK position still depends on your UK residence status and what assets you sell.

The CGT’s annual exemption

The Annual Exempt Amount is £3,000 for individuals in 2025/26. It is use-it-or-lose-it.

Common planning steps while still a UK resident:

Review investment portfolios for gains and losses.
Consider whether a disposal makes sense before leaving.
If you are married or in a civil partnership, transfers between spouses can be part of a broader plan (again, facts matter).

Step 6: Understand “Temporary Non-Residence” Before You Sell Anything Significant

If you become non-resident and then return to UK residence within a defined window, the temporary non-residence rules can bring certain gains into charge in the year you come back. HMRC’s guidance explains how the rules apply and flags that the SRT determines residence.

Why this matters in real life

People move to the UAE, sell shares or exit a business, then return to the UK sooner than planned. If the return falls within the temporary non-residence window, the UK tax result can change materially.

Such an event is exactly the sort of “expensive surprise” that good pre-departure planning prevents.

Step 7: UK Property Remains in the UK Tax Net

Even if you are fully non-resident, UK property can still trigger UK tax reporting and UK tax.

UK rental income

UK property rental profit remains taxable in the UK. HMRC collects this through the Non-resident Landlord Scheme, and landlords can apply to receive rent without tax withheld if approved.

Selling UK property

Non-residents who sell UK property or land generally need to report disposals and follow the non-resident CGT process. The rules expanded from 6 April 2019 to cover disposals of all UK property or land (including certain indirect disposals).

There are also rebasing options depending on the type of property and dates, which can affect how gains are calculated.

And if you are temporarily non-resident, HMRC explicitly notes that different rules can apply on return to the UK.

Step 8: Leaving the UK, Tell HMRC the Right Way

If you are not filing Self Assessment for the year you leave, HMRC allows you to tell them you are leaving and claim any tax refund due using P85. It also asks questions about UK homes, overseas work, salary paid in the UK, and time spent in the UK over the next 3 years.

This is not a tick-box exercise. HMRC closely links its questions to your residence status.

Step 9: Inheritance Tax Planning Now Includes “Long-Term UK Resident” Rules

From 6 April 2025, the domicile and deemed domicile rules were replaced by long-term UK resident rules for IHT.

You can be a long-term UK resident if you are a UK tax resident for:

The previous 10 consecutive years, or
A total of 10 years or more in the previous 20 years.

HMRC also states you can keep long-term UK residence for up to 10 tax years after you leave, depending on how long you lived in the UK before departure.

This is a big change. If you are leaving the UK and you have meaningful wealth, you should not guess your IHT exposure. You should model it properly with expert UK tax advice for expats.

Step 10: EIS and SEIS Can Be Useful In The Final UK Tax Year (for the right person)

If you have a high-income final UK tax year, EIS or SEIS can sometimes form part of a wider plan.

EIS income tax relief is generally 30%, subject to limits, and you can elect to treat some subscriptions as made in the previous tax year (carry back) if conditions are met.
SEIS can offer higher income tax relief and also has carry-back rules in HMRC’s helpsheet.

These investments are higher risk and not suitable for everyone. They also need careful timing, and you must have enough UK income tax liability to use the relief.

A practical timeline for a move before 5 April 2026

3–6 months before leaving

Map your expected travel days and UK ties under the SRT.
Decide whether you need split-year treatment and which case may apply.
Review the ISA strategy before contributions have to stop.
Review pension contribution options and relief position.
Review CGT exposures, especially if you may sell assets shortly after leaving.

4–8 weeks before leaving

Check employment timing, bonus timing, and final payroll details.
Review UK property plans, rental management, and NRL scheme position.

After leaving

Keep evidence of travel, work location, and accommodation.
Keep UK days under control, especially in the first couple of tax years.

How We Can Help You With UK Tax Rules For Moving Abroad

Apex Accountants help clients moving to the UAE build a clear plan before they leave and stay compliant after they arrive. Our UK tax advice for expats typically includes:

UK Statutory Residence Test reviews, including day-count planning and UK ties analysis.
Split-year treatment advice for the year of departure.
Pre-departure planning for ISAs, pensions, and CGT exposures.
UK property tax planning for non-residents, including NRL scheme set-up and disposal reporting.
Temporary non-residence risk reviews before major disposals.
IHT exposure reviews under the long-term UK resident rules.

Conclusion

A UAE move can simplify parts of your tax life, but it does not automatically switch the UK off. The smart approach is to pin down your residence position, plan the year you leave, and deal with the big-ticket items early, especially ISAs, pensions, CGT, UK property, and IHT.

If you want a clean, practical plan before 5 April 2026, we can review your timeline, day counts, income sources, and assets, then map out the steps in the right order.

FAQs

1. How many days can I spend in the UK and stay non-resident?

It depends on the SRT and your UK ties. Some people can be non-resident with very low day counts, while others need tighter limits due to family or accommodation ties.

2. Do I pay UK tax on my UAE salary?

If you are genuinely a non-UK resident, overseas income is generally outside UK tax, but the residence analysis comes first.

3. Will HMRC still tax my UK rental income?

Yes, UK rental profit is still taxable in the UK, usually through the Non-resident Landlord Scheme.

4. If I sell UK property while living in Dubai, do I need to report it?

Often yes. Non-residents have UK reporting obligations for UK property disposals, and the rules cover UK property and land disposals widely from 6 April 2019.