You can keep your existing ISA
You do not have to close your ISA when you become non-UK resident. The ISA remains open and your existing investments continue to grow tax-free in the UK.
Good news: you can keep your ISA when you leave the UK. But the rules change significantly. No new money in, your new country may tax ISA income, and some providers have restrictions on non-residents.
You do not have to close your ISA when you become non-UK resident. The ISA remains open and your existing investments continue to grow tax-free in the UK.
From the tax year after you become non-resident, you lose the annual ISA allowance (£20,000). No new subscriptions until you return to the UK and are resident again.
The ISA tax-free status is a UK benefit. Most countries do not recognise UK ISA wrappers — they will tax dividends, interest and capital gains as normal income. Check the DTA.
A few ISA managers have terms that restrict or close accounts for non-residents. Check with your provider. Hargreaves Lansdown, AJ Bell and Vanguard are generally expat-friendly.
When you become UK resident again, your ISA rights fully restore. You can start making new subscriptions from the start of the next tax year.
If your spouse/civil partner dies, you inherit an Additional Permitted Subscription (APS) equal to their ISA value — even if they were non-resident. This can be claimed within 3 years.
If your ISA is a flexible ISA, you can still withdraw and replace money in the same tax year — but you cannot make net new contributions above your existing balance at departure.
How your destination country typically treats UK ISA income