21 July 2026

Overseas Property Tax UK – Complete Guide for British Buyers 2026

Complete guide to UK tax on overseas property for British buyers. Covers rental income, capital gains, SDLT surcharges up to 5%, the new FIG regime, inheritance tax under 10-year residence rules, and double taxation treaties.

Buying property abroad is an exciting step — whether it's a retirement villa in Spain, a holiday let in Croatia, or an investment apartment in Portugal. But the tax implications can catch British buyers off guard. Unlike a UK property purchase, an overseas home brings you into contact with two tax systems at once, and HMRC's rules have changed significantly in 2025–2026.

This guide covers everything a UK resident needs to know about tax on overseas property: from rental income and capital gains to stamp duty surcharges and the new inheritance tax regime.

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4 min read

Are You UK Tax Resident? — The Starting Point

Your UK tax obligations on overseas property start with one question: are you UK resident for tax purposes?

HMRC determines this using the Statutory Residence Test (SRT), which considers:

Days spent in the UK — 183 days or more in a tax year (6 April to 5 April) almost always means UK resident
Ties to the UK — home, family, work, and accommodation connections
Full-time work abroad — working full-time overseas for a complete tax year can tip the balance to non-residence

If you are UK resident: you pay UK tax on your worldwide income and gains — including rental income and capital gains from property anywhere in the world.

If you are non-UK resident: you generally only pay UK tax on UK-sourced income. Your overseas property will usually fall outside HMRC's reach, but the temporary non-residence rule can pull gains back into the UK if you return within five years.

Important: UK residence for tax purposes is not the same as where you happen to sleep most nights. Use HMRC's online SRT checker or speak to a qualified tax adviser before assuming you're non-resident.

Tax on Foreign Rental Income

The Core Rule

UK residents must declare all overseas rental income on their Self Assessment tax return. This applies whether the income is paid into a UK bank account or held overseas.

You report rental income and expenses on the SA106 (Foreign) supplementary pages. The tax year runs 6 April to 5 April, and your online return is due by 31 January following the end of the tax year.

Allowable Expenses

You are taxed on your profit (rent minus allowable expenses), not your gross rent. Allowable deductions include: letting agent fees, maintenance and repairs, insurance premiums, local property taxes, utility bills paid as landlord, accountancy fees.

Mortgage Interest Relief — Restricted

Like UK rental properties, mortgage interest on residential overseas property is no longer deductible as an expense. Instead, you receive a 20% tax credit on the finance costs.

Example: You earn £10,000 rental profit and pay £5,000 mortgage interest. You cannot deduct the £5,000. Your UK tax is calculated on the full £10,000 profit, then you receive a £1,000 credit (20% of £5,000) against your final tax bill.

Currency Conversion

Convert all foreign income and expenses to GBP using the exchange rate at the time each transaction occurred. HMRC publishes monthly average rates on GOV.UK.

The £1,000 Property Allowance

If your total gross rental income from all properties is £1,000 or less in a tax year, you may not need to declare it.

Capital Gains Tax When You Sell

When CGT Applies

If you are UK resident and you sell an overseas property, any gain is potentially subject to UK CGT. The gain is the difference between what you paid and what you sold for, converted to GBP at the exchange rate prevailing at each date.

CGT Rates (2025/26)

Basic rate: 18%. Higher rate: 24%.

Annual Exempt Amount

£3,000 per tax year (2024/25 onward).

Private Residence Relief (PRR)

If the overseas property was your only or main residence at some point, you can claim PRR. The final 9 months of ownership always qualify if the property was your main residence at any time.

Temporary Non-Residence Rule

If you return to the UK within 5 years of leaving, gains made while non-resident may be chargeable to UK CGT.

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