Moving abroad doesn’t always mean leaving your UK tax obligations behind. While many British expats assume they no longer need to think about HMRC once they’ve relocated, the reality is often more complicated.
Whether you own a rental property in the UK, continue to earn income from a British business, or receive other taxable income, you may still need to complete a UK Self Assessment tax return.
Understanding your responsibilities can help you avoid unexpected tax bills or penalties and ensure you’re paying the right amount of tax, no more and no less.
Does living abroad mean you stop paying UK tax?
Not necessarily.
Your UK tax obligations depend on a range of factors, including your tax residency status and the type of income you receive. Even if you’ve lived overseas for several years and are considered non-resident for UK tax purposes, certain types of UK income can still be taxable.
Common examples include:
- Rental income from a UK property.
- Profits from a UK-based business or self-employment.
- Certain pension income.
- Capital gains on some UK assets.
- Other income that arises in the UK.
Everyone’s circumstances are different, which is why it’s important to understand how the rules apply to your own situation.
What is UK tax residency?
One of the biggest factors in determining whether you need to file a UK tax return is your residency status.
The UK uses the Statutory Residence Test (SRT) to determine whether you’re considered a UK tax resident for a particular tax year. The test takes into account several factors, including:
- How many days you spend in the UK.
- Whether you have a home in the UK.
- Your work patterns.
- Your family and personal connections.
You could be classed as non-resident even if you visit the UK regularly, while others may remain UK tax resident despite spending significant time overseas.
Because the rules can be complex, it’s worth checking your status carefully if you’re unsure.
Do all British expats need to submit a Self Assessment tax return?
No.
Some expats have no ongoing UK income and no requirement to complete a tax return. However, many still do.
You may need to submit a Self Assessment tax return if you:
- Receive rental income from UK property.
- Continue running a UK business.
- Have untaxed UK income.
- Need to report capital gains.
- Have been asked to file a return by HMRC.
If HMRC issues you with a notice to file a tax return, you should generally complete it even if you believe you have little or no tax to pay.
What about UK rental properties?
One of the most common reasons British expats continue filing UK tax returns is because they own property that they rent out.
Rental income earned from UK property is usually taxable in the UK, regardless of where the landlord lives.
Landlords can typically deduct allowable expenses before calculating their taxable profit. These may include:
- Letting agent fees.
- Maintenance and repairs.
- Buildings insurance.
- Certain finance costs.
- Professional fees related to managing the property.
Keeping accurate records throughout the year can make preparing your tax return much easier.
Could you have tax obligations in two countries?
Potentially, yes.
Living abroad may mean you’re subject to the tax rules of your new country of residence while still having tax responsibilities in the UK.
Fortunately, the UK has double taxation agreements[AG1] with many countries. These agreements are designed to help prevent the same income from being taxed twice.
Exactly how these agreements apply depends on where you live and the type of income you receive.
If your affairs span multiple countries or involve significant amounts of income, seeking professional advice may be worthwhile.
What records should you keep?
Good record keeping is important wherever you live.
You should retain evidence of:
- Income received.
- Business transactions.
- Rental income and expenses.
- Invoices and receipts.
- Bank statements where relevant.
- Details of any tax already paid.
Having organised records can make filing simpler and reduce the risk of mistakes if HMRC requests further information.
What happens if you don’t file when required?
Failing to submit a required UK tax return can lead to penalties and interest charges, even if no tax is ultimately due.
Missing deadlines may also create additional administrative issues that can take time to resolve later.
If you’re unsure whether you need to file, it’s generally better to establish your position before a deadline passes rather than wait until HMRC contacts you.
The bottom line
Living overseas doesn’t automatically bring your UK tax responsibilities to an end.
Many British expats continue to have ongoing obligations because they receive UK income, own rental properties or maintain business interests in the UK. Others may have no filing requirements at all.
The key is understanding your own circumstances and keeping accurate records throughout the year. Taking the time to check your obligations can help you stay compliant and avoid unnecessary stress when tax deadlines arrive.
If you’re uncertain whether you need to complete a UK tax return, reviewing your residency status and the sources of your income is a sensible place to start.