Exchange rates can also make a bigger difference than you might expect. The purchase price, sale proceeds and allowable costs are converted into pounds separately using the relevant exchange rates at the time of each transaction. This means a relatively small profit in the local currency could become a much larger taxable gain in the UK. This guide explains how the calculation works, the reliefs available and what you need to report to HMRC.
Key Takeaways
Do UK Residents Pay Capital Gains Tax on Overseas Property?
How to Calculate CGT on an Overseas Property Sale
Step 1: Gather the purchase, sale and cost records
Start with the original documents showing:
the purchase price and date
the sale price and disposal date
qualifying transfer taxes and acquisition costs
legal, notary and agent fees
invoices for qualifying capital improvements
qualifying costs directly connected with the sale
Keep each amount and date separate because they may need to be converted using different exchange rates.
If you inherited the property, your acquisition value is generally the property's market value at the date of death, rather than what the deceased originally paid for it. Where a value has been formally ascertained for Inheritance Tax purposes, that value will normally also be used for CGT.
Step 2: Convert each amount into pounds sterling
HMRC requires the capital gain to be calculated in sterling. Each separate amount is converted using the exchange rate applying when that part of the transaction occurred. You cannot calculate the complete gain in the foreign currency and simply convert the final answer into pounds.
Worked example
Assume a higher-rate taxpayer bought a flat in Málaga in June 2016 and sold it in July 2026. The exchange rates below are illustrative, and we assume the entire taxable gain is chargeable at 24%.
Item | Local amount | Illustrative rate | Sterling |
|---|---|---|---|
Purchase price, June 2016 | €260,000 | £1 = €1.30 | £200,000 |
Qualifying purchase costs | €26,000 | £1 = €1.30 | £20,000 |
Qualifying capital extension, May 2021 | €29,000 | £1 = €1.16 | £25,000 |
Sale price, July 2026 | €348,000 | £1 = €1.16 | £300,000 |
Qualifying agent and legal fees | €17,400 | £1 = €1.16 | £15,000 |
Sterling CGT computation (illustrative)
Item | Sterling amount |
|---|---|
Sale proceeds | £300,000 |
Less: selling costs (agent/legal) | (£15,000) |
Net sale proceeds | £285,000 |
Less: base costs: | Cell |
– Purchase price | (£200,000) |
– Purchase costs | (£20,000) |
– Capital extension | (£25,000) |
Total base costs | (£245,000) |
Chargeable gain (before AEA) | £40,000 |
Measured purely in euros, the net increase after these costs is only €15,600. But the UK tax calculation produces a £40,000 gain because the pound weakened against the euro during the period of ownership.
That difference matters. If someone incorrectly converted the €15,600 net gain at the sale-date rate, they would calculate a gain of roughly £13,448. After a £3,000 Annual Exempt Amount, tax at 24% would be about £2,508.
Using HMRC's correct sterling method, the £40,000 gain less a £3,000 Annual Exempt Amount leaves £37,000 taxable, producing CGT of £8,880 at 24%, before any available Foreign Tax Credit Relief.
That is a difference of approximately £6,372 on one property.
The figures and exchange rates are illustrative. Actual tax depends on the transaction dates, allowable expenditure, available losses and reliefs, the taxpayer's income and any foreign tax credit.
The figures and exchange rates are illustrative. Actual tax depends on the transaction dates, allowable expenditure, available losses and reliefs, the taxpayer's income and any foreign tax credit.
Step 3: Deduct only costs HMRC allows
Not every property-related cost can be used to reduce your capital gain. Only certain qualifying expenses count.
These will typically include:
- the price you paid for the property, or the relevant market value at death if you inherited it
- qualifying purchase taxes and conveyancing costs
- legal, estate agent and professional fees directly connected with buying or selling the property
- genuine capital improvements that added value and are still part of the property when you sell
Example, building an extension or adding an extra room may qualify. General repairs, decorating, or replacing worn-out items usually will not.
You also cannot normally deduct mortgage interest, mortgage arrangement fees, or expenses you have already claimed against rental income.
Keep proper invoices and records. Simply describing a cost as “refurbishment” is not enough, the nature of the work can make a real difference to your taxable gain.
Check for CGT reliefs
Before paying CGT, check whether any reliefs can reduce the bill.
Private Residence Relief may apply if the overseas property was genuinely your main home. If neither you nor your spouse or civil partner is tax resident where the property is located, a 90-day rule (TCGA 1992, ss.222A–222C) applies: you must stay overnight there at least 90 times in a tax year (pro-rated for part-years) for that year to count towards the relief.
You may also be able to use capital losses to reduce taxable gains.
Transfers between spouses or civil partners can usually be made without an immediate CGT charge. If ownership is genuinely transferred before the property is sold, each spouse may be taxed on their own share of the gain.
The key point: timing and genuine ownership matter. For overseas property, also check the local tax and legal rules before making any transfer.
Step 4: Apply the Annual Exempt Amount & CGT rate
Once you have deducted any allowable losses and reliefs, apply the Annual Exempt Amount (AEA).
For 2026/27, most individuals can deduct £3,000 from their taxable gains. However, the AEA is not available if you claim the Foreign Income and Gains (FIG) regime or Overseas Workday Relief for that year.
The remaining gain is taxed at:
18% to the extent it falls within your unused basic-rate band
24% on any amount above it
Using the Málaga example, assume the taxpayer has no unused basic-rate band and can claim the full £3,000 AEA:
£40,000 gain − £3,000 AEA = £37,000 taxable gain
£37,000 × 24% = £8,880 CGT
That is the UK CGT bill before deducting any Foreign Tax Credit Relief for qualifying tax paid overseas.
If the property is jointly owned, each owner works out CGT on their own share. Their own losses, AEA, income and unused basic-rate band are then applied separately, so two owners can end up with very different tax bills on the same sale.
Foreign Tax Credit Relief: Avoiding Double Taxation
Selling an overseas property can trigger tax both overseas and in the UK. Where the same gain is taxed twice, Foreign Tax Credit Relief (FTCR) may reduce the UK Capital Gains Tax bill.
Under the relevant Double Taxation Agreement, or under unilateral relief in Part 2 of the Taxation (International and Other Provisions) Act 2010 (TIOPA 2010) where no treaty applies, HMRC generally limits the credit to the lower of the qualifying foreign tax paid or the UK tax attributable to the same gain. For example, if your UK CGT is £8,880 and you have paid £2,555 of qualifying foreign tax, the UK credit would normally be £2,555, leaving £6,325 payable to HMRC. If the foreign tax exceeds the UK tax on that gain, the UK liability can potentially fall to nil, but the excess does not create an additional UK repayment or offset another gain.
Keep the foreign tax assessment, calculation and proof of payment. You do not normally submit these documents with your tax return, but HMRC may ask for them. Foreign gains and FTCR are generally reported through the SA106 Foreign pages, with HS263 used where necessary to calculate the credit.
Paying the foreign tax in a different tax year does not automatically prevent relief. However, if the overseas country calculates the gain differently from the UK, the amount of credit available may need to be restricted. For cross-border property sales, this is often where the calculation becomes more complex.
Selling an Overseas Property?
UK Property Accountants can review your CGT calculation, Foreign Tax Credit Relief and reporting position to help you avoid double taxation, missed reliefs and costly filing errors.
How do you Report an Overseas Property Sale to HMRC?
For a property sold in July 2026, the gain falls in the 2026/27 tax year. The normal online Self-Assessment filing and payment deadline would therefore be 31 January 2028. If you need to file a return and are not already registered for Self-Assessment, you would normally need to register by 5 October 2027.
MTD Note
If you are required to use Making Tax Digital for Income Tax, the overseas gain will be included in your year-end tax return through compatible software. The sale itself does not become part of your quarterly property-income updates, and the 60-day UK property return still does not apply to an overseas property disposal.
For more practical guidance on MTD, explore RentalBux for helpful articles, updates and resources.
What Happens if you Sell after Moving Abroad?
Moving abroad does not necessarily take an overseas property gain outside UK Capital Gains Tax (CGT). Under the temporary non-residence rules, certain gains made while you are non-UK resident can become taxable when you return. Broadly, the rules can apply if you had sole UK residence in at least four of the seven tax years before your year of departure and your period of non-residence does not exceed five years.
This is particularly relevant for short overseas assignments. If you owned a property before leaving the UK and sell it while abroad, the gain may still be taxed when you return. However, assets bought and sold entirely during the non-resident period are generally excluded, subject to specific exceptions.
Frequently Asked Questions
Usually yes, but with credit for the foreign tax. You declare the full sterling gain to HMRC, then claim Foreign Tax Credit Relief for the tax paid in the property country, capped at the lower of the two amounts. Where the foreign rate is below the UK rate you pay the difference to HMRC. Where it is higher, the excess is lost.
No. The 60-day capital gains return covers disposals of UK land only. An overseas disposal is reported on your Self-Assessment return for the tax year of the sale, with payment due by 31 January after the end of that tax year. Reporting it through the 60-day service is a common and avoidable mistake.
Through the Common Reporting Standard, under which more than 100 jurisdictions exchange financial account information with HMRC automatically. HMRC also sees the foreign pages of your own returns and can request information under treaty exchange provisions. Assume HMRC either knows or can find out, because penalties for undeclared offshore gains are significantly higher than for domestic ones.
The strict rule is the spot rate on each transaction date. HMRC publishes monthly and yearly average rates and will generally accept a reasonable method applied consistently across the whole computation, but on a large gain the spot rate on the day is the position you can defend. Whatever you use, use the same source throughout and keep the evidence.
Yes. The £3,000 annual exempt amount applies to your total chargeable gains for the year, wherever the assets are. It is per person, so a jointly owned property gives a couple £6,000 between them. It cannot be carried forward, so an unused allowance is lost at the end of the tax year.
You may still have a sterling gain, and that gain is taxable. If the sterling computation produces a loss, it is an allowable loss you can set against other gains in the same year or carry forward, provided you claim it on your tax return within four years of the end of the tax year in which it arose.
Need Help?
Need more expert advice on overseas property tax? Speak to UK Property Accountants for specialist guidance tailored to your situation.
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