Guide to Capital Gains Tax Rules for UK Expat Property Owners
Updated May 2026
If you are a British expat selling property in the UK, there is a good chance that Capital Gains Tax (CGT) will apply.
This often comes as a surprise.
Many expats assume that once they leave the UK, HMRC no longer has any interest in gains made on UK property.
It used to be broadly true.
But the rules changed years ago.
And today, many expats are caught out by unexpected tax bills, strict reporting deadlines, and penalties for late filing.
The challenge is that the rules are not always intuitive.
Particularly if you have lived abroad for a long time, have moved between countries, or previously lived in the property yourself.
According to a survey conducted by Experts for Expats, 61% of expats aren’t aware that CGT may be due when a UK property is sold while living overseas.
Do British Expats Pay Capital Gains Tax on UK Property?
In most cases, yes.
Since 6 April 2015, non-UK residents have generally been liable for UK Capital Gains Tax on gains made when selling UK residential property.
The rules were later extended further.
Since April 2019, they can also apply to UK commercial property and land.
Importantly, it does not matter:
- how long you have lived abroad
- whether you plan to return to the UK
- whether you pay tax overseas
- or whether the property is rented out
If the property is in the UK, HMRC may still want a share of the gain.
How Is Capital Gains Tax Calculated for Expats?
One important point works in your favour.
In many cases, you can “rebase” the property value to 5 April 2015.
In simple terms, this means only the increase in value since that date may be taxable.
The taxable gain is usually calculated as:
- Sale price
- Less the rebased value (or original purchase price if more beneficial)
- Less allowable costs and reliefs
Allowable costs can include:
- legal fees
- estate agent fees
- stamp duty
- qualifying improvement works
For the 2026/27 tax year:
- basic-rate taxpayers generally pay 18%
- higher-rate taxpayers generally pay 24%
There is also an annual CGT allowance of £3,000.
However, the position can become significantly more complicated if:
- you previously lived in the property
- you moved abroad part-way through ownership
- you jointly own the property with a spouse
- the property has been inherited
- you have periods of UK tax residence during ownership
This is one of the reasons why expat property planning is rarely as straightforward as people initially assume.
Private Residence Relief (PPR) For Expats
Some expats may still qualify for partial or full Private Residence Relief.
This is one of the most misunderstood areas of the rules.
Broadly speaking, if the property was once your main home, part of the gain may be exempt.
In some situations, full relief may still apply.
However, there are conditions.
For example, you may need to satisfy the “90-day rule” during periods of non-residence.
This is where things can become dangerous.
Trying to qualify for relief by spending more time in the UK can sometimes have unintended consequences under the Statutory Residence Test.
In other words:
Saving CGT in one area could accidentally create a much larger UK tax problem elsewhere.
The 60-Day Reporting Rule
This catches many expats out.
Non-residents selling UK property generally need to:
- report the disposal to HMRC
- and pay any CGT due
within 60 days of completion.
This applies even if:
- no tax is ultimately due
- the gain is covered by reliefs
- the property is gifted rather than sold
Miss the deadline and HMRC can impose:
- penalties
- interest charges
- and ongoing compliance issues
In practice, many expats only discover this rule after the sale has completed.
Double Taxation Can Complicate Things Further
Another common misconception is:
“I already pay tax where I live, so I won’t pay UK tax.”
Unfortunately, cross-border taxation is rarely that simple.
Many countries also tax capital gains on worldwide assets.
This can potentially create a double-taxation issue.
In some cases, a double tax treaty may help prevent being taxed twice.
But the interaction between:
- UK CGT rules
- local tax law
- and the relevant tax treaty
can become highly technical very quickly.
This is especially important for expats living in countries such as:
- Spain
- France
- Portugal
- Italy
- Canada
- Australia
where local capital gains rules can differ significantly from the UK.
Case Study: Why the 2015 Rebasing Rules Matter for British Expats
David and Sarah left the UK in 2008 and have been living in Belgium ever since.
Before leaving, they kept their former family home in Surrey as a rental property.
They are now approaching retirement and plan to relocate to France.
They have no intention to return to the UK, so they have decided to sell the property before leaving Dubai.
At the time they purchased it in 2002, the property cost them £250,000.
By April 2015, it was worth approximately £600,000.
It is not worth £850,000.
At first glance, they assumed the taxable gain would simply be:
- Sale price: £850,000
- Original purchase price: £250,000
- Total gain: £600,000
Naturally, this caused some concern.
However, because they were non-UK residents, they were generally able to use the 5 April 2015 rebasing rules.
This meant that, instead of being taxed on the full gain since 2002, they could effectively reset the property’s value to its April 2015 market value.
The revised calculation looked more like this:
- Sale price: £850,000
- 5 April rebased price: £600,000
- Taxable gain: £250,000
In simple terms:
£350,000 of historic growth escaped UK Capital Gains Tax altogether.
That is a very significant difference.
Particularly for long-term expats who bought UK property many years ago when prices were substantially lower.
However, this is where many people oversimplify the planning.
Because the UK tax position is often only part of the story.
David and Sarah also needed to consider:
- how Belgium would tax the gain
- currency movements between sterling and euros
- whether any double tax relief was available
- ownership structure
- deductible costs and improvements
- reporting deadlines in both countries
This is one reason why expat property sales often require careful coordination before contracts are exchanged.
A decision made a few months too late can materially change the outcome.
Capital Gains Tax Rules for UK Expat Property Owners: Frequently Asked Questions
Do British expats pay Capital Gains Tax when selling UK property?
Usually, yes. Since April 2015, non-residents have generally been subject to UK CGT on gains made from selling UK residential property.
What are the CGT property rates for expats in 2026/27?
For most residential property sales:
- 18% for gains within the basic-rate band
- 24% for gains above it
Do expats get a Capital Gains Tax allowance?
Yes. The annual CGT exemption is currently £3,000.
What is the 60-day rule for expats selling UK property?
Non-residents must generally report the sale and pay any CGT due within 60 days of completion.
Can expats avoid CGT if the property used to be their home?
Possibly. Private Residence Relief may reduce or eliminate part of the gain, depending on your circumstances and periods of occupation.
Further Reading
🔗 Tax if you live abroad and sell your UK home: Overview
🔗 UK Expat Tax Rules: What You Need to Know
🔗 Top 10 Mistakes British Expats Make with Their Finances
🔗 Navigating the UK Temporary Non-Residence Rules: A Guide for Expats
Real People, Real Results
“I have consistently gone back to Ross to seek advice as my situation has changed and I have also talked about and recommended Ross to several expat colleagues.
Ross is a great sounding board and very comfortable providing advice to those already with some knowledge of investing and those who are just starting out.”
— David Harrington
More TestimonialsThe Bottom Line
Selling UK property while living abroad is often more complicated than people expect.
And the financial consequences of getting it wrong can be significant.
In many cases, careful planning before the sale takes place can materially improve the outcome.
Particularly where there are questions around:
- ownership structure
- timing
- residence status
- rebasing
- reliefs
- or overseas taxation
For many expats, this is one of those areas where taking advice before acting can save a considerable amount of stress, tax, and unnecessary mistakes.
Talk to an Expert
Understanding the UK Capital Gains Tax (CGT) rules for expats is essential if you own property in the UK while living abroad. Many expats still face CGT on disposals, and timing, valuations, and residency status all play a major role in how much tax you may owe.
I’m Ross Naylor, a UK-qualified Chartered Financial Planner with nearly 30 years’ experience helping British expats navigate the complicated overlap between UK assets, residency rules, tax treaties, and long-term financial planning.
I firmly believe your location in the world should never be a barrier to expert, impartial, and transparent financial advice you can trust.
Whether you are planning to sell a UK property, return to the UK in the future, or simply want to understand your options before making any decisions, taking advice early can often help you avoid costly mistakes and unnecessary tax. Cross-border financial planning is rarely just about one transaction in isolation. The wider picture matters.
Book a confidential consultation