Yes, you may have to pay UK Capital Gains Tax (CGT) if you live abroad and sell your UK home, specifically on any gains made since 5 April 2015, as noted by Experts for Expats. Regardless of whether you owe tax, you must report the sale to HMRC within 60 days of completion.
You may have to pay tax when you sell (or 'dispose of') your UK home if you're not UK resident for tax purposes. Even if you have no tax to pay, you must tell HMRC you've sold the property within 60 days of transferring ownership (conveyancing).
Normally, if you sell (or otherwise dispose of – for example, if you give away) your only or main home, you do not have to pay capital gains tax on any profit if it has been your only or main home throughout the entire period of ownership. This is called main residence relief (or private residence relief).
If you're abroad
You do not pay Capital Gains Tax on other UK assets, for example shares in UK companies, unless either: you return to the UK within 5 years of leaving. you sell shares in a company that is 'UK property rich' and you meet the conditions for an indirect disposal.
Selling property abroad comes with a double tax obligation for American citizens and residents. You'll owe taxes in the country where the property is located, and the US requires all taxpayers to report and pay taxes on worldwide income, including capital gains from foreign property sales.
To avoid the UK's 60% tax trap (an effective 60% rate on income between £100k-£125k), the key is to reduce your adjusted net income back below £100,000 by making tax-efficient contributions, primarily via pension contributions, which reclaim your full £12,570 Personal Allowance, and also through salary sacrifice for benefits like childcare or cycle-to-work, and Gift Aid donations to charity.
What Are the Legal Ways to Reduce or Avoid CGT?
You may have to pay tax on certain income or gains made while you were non-resident. This doesn't include wages or other employment income. These rules (called 'temporary non-residence') apply if both: you return to the UK within 5 years of moving abroad (or 5 full tax years if you left the UK before 6 April 2013)
The "6-year rule" for Capital Gains Tax (CGT) in Australia allows you to treat a former main residence as tax-exempt for up to six years after you move out, even if you rent it out, enabling you to avoid CGT on any growth during that period. You qualify by moving out, choosing to treat it as your main home for tax, and can reset the rule by moving back in. If you rent it out for longer than six years, only the portion of the gain after the six-year mark becomes taxable.
Make maximum use of tax-efficient wrappers
The simplest way to reduce capital gains tax is to invest within an individual savings account (ISA). The ISA allowance is currently £20,000 a year3 and all growth and income within the ISA is free from CGT and income tax.
You get Private Residence Relief for the time you lived there (7.5 years). You also get relief for the last 9 months you owned the property, even though you were not living in it. This means you get Private Residence Relief for 8.25 of the years (55% of the time) you owned the property.
You will need to tell the HMRC if: you sell more than the 'Trading Allowance' of £1,000 (before deducting expenses). sell a personal item for £6,000 or more, in which case you may be liable for Capital Gains Tax.
While there is no Exit Tax in the UK, a number of reliefs can be lost, either immediately or after a short period such as: Personal allowance for Income Tax if not covered by treaty or nationality. Business Asset Disposal Relief – the 14% rate at risk. Gift/Holdover Relief – the exit clawback.
It allowed sellers to claim CGT exemption for the final 36 months of ownership, even if they had moved out. However, this was reduced to 18 months in 2014 and further to 9 months in 2020, which remains the rule today. This general law is in place as it prevents short-term transaction benefits concerning taxation.
Generally, you do not need to tell HMRC if you are leaving the UK for a short period, such as for a holiday or brief business trip. However, if you are leaving the UK to live overseas, at the very least you should advise HMRC of your new residential address (and correspondence address, if different).
On a $100,000 capital gain, you'll likely pay 15% for long-term gains, resulting in about $15,000 in federal tax (plus potential state tax), but it could be 0% or 20% depending on your total taxable income and filing status, while short-term gains are taxed as ordinary income (potentially 22-24%).
The capital gains tax over 65 is a tax that applies to taxable capital gains realized by individuals over the age of 65. The tax rate starts at 0% for long-term capital gains on assets held for more than one year and 15% for short-term capital gains on assets held for less than one year.
Main Residence Relief for Foreign Holiday Homes
The foreign property must be your own holiday home for at least part of the time but, by making the election, you will be able to exempt some or all of the capital gain on your foreign home from UK Capital Gains Tax.
HMRC's investigations can only go back a certain amount of time based on how serious the situation is, as outlined in the table below: Genuine mistakes - investigate back 4 years. Carelessness - investigate back 6 years. Offshore matters/offshore transfers - investigate back 12 years.
The Six-Month Rule
First, the property must have been your primary residence for at least three months within the 12 months before selling it. Secondly, you must not have used the property to make assessable income in any way within the 12 months before selling.
To qualify for 0% capital gains tax, you must have long-term capital gains (assets held over a year) and your taxable income (after deductions) must fall below specific IRS thresholds, which change annually but are roughly <$48,350 for single filers and <$96,700 for married filing jointly for the 2025 tax year, allowing for higher total income when combined with deductions like the standard deduction. The key is keeping your adjusted gross income (AGI) low enough so that after subtracting deductions, your taxable income remains within these limits.
Yes, US citizens and residents must report and may need to pay capital gains tax when selling foreign property.
Your capital gain (profit) is $200,000. Your taxable capital gain with the 50% discount applied is $100,000. Your estimated capital gains tax obligation is $37,175.