ISAs and Tax-Free Saving
How to Transfer an ISA Without Losing Your Allowance
Learning how to transfer an ISA properly is worth ten minutes of your time, because the single most common mistake is also the most expensive and the least reversible. Whether you are moving a cash ISA to a better rate, shifting a stocks and shares ISA to a cheaper platform, or combining several old ISAs into one, the money can move between providers with no tax consequence and no dent in your annual allowance. But only if you follow the formal transfer process. Do it the obvious-looking way, by withdrawing the cash yourself, and you throw away tax-free allowance you cannot get back.
The one rule that matters
Never withdraw the money to move it yourself.
The moment funds leave the ISA wrapper they stop being ISA money. Paying that cash into a new ISA counts as a fresh subscription against this year’s £20,000 allowance, and HMRC is explicit that if you withdraw without using the official transfer process, you will not be able to reinvest that part of your tax-free allowance again. A transfer, by contrast, moves the money provider-to-provider while keeping the wrapper intact, so none of it touches your allowance. Everything else in this guide is detail; this is the rule.
How the transfer process actually works
You do not contact your old provider. You contact the new one. The process is deliberately counter-intuitive:
- Open or choose the ISA you want to move to.
- Fill in that provider’s ISA transfer form, giving details of the account you are moving from.
- The new provider contacts your old provider and arranges the transfer between them.
That is it. The receiving provider does the legwork, and the money (or the investments) passes across without you ever handling it. Resist the temptation to “just move it faster” by pulling the cash out. Speed is not worth the lost allowance.
Current-year versus previous-year money
This is the part that trips people up, and the rules have relaxed in recent years. Under the current rules you can transfer all or part of the savings in your ISA, from both the current tax year and previous years, at any time. Previous years’ money has always been flexible: you can split it across as many receiving ISAs as you like, in whatever amounts suit you.
The distinction still worth remembering is that current tax-year subscriptions to a given ISA are treated as a block for the purpose of keeping your allowance clean. If you are moving this year’s cash ISA to a new cash ISA, the sensible and simplest approach is to transfer the current year’s money in one piece to avoid any confusion over what has been subscribed where. When in doubt, transfer the whole account and start fresh contributions at the new provider.
You can change ISA type as you transfer
A transfer is not limited to like-for-like. You can move a cash ISA into a stocks and shares ISA, or the other way round, as part of the transfer, and it still does not use your allowance. This is how a lot of people move idle cash into investments, or de-risk an investment ISA into cash near a goal, without a taxable event. Our guide on cash ISA versus stocks and shares ISA covers when that switch makes sense, and if you are specifically moving investments to cut platform fees, how to transfer a stocks and shares ISA goes deeper on in-specie versus cash transfers.
How long it takes, and the fees to check
The timelines are set by the rules, not by how helpful your provider feels. A cash ISA to cash ISA transfer should complete within 15 working days. Any other type, including anything involving a stocks and shares ISA, is allowed up to 30 calendar days. If yours drags well past that, chase the receiving provider, since they are running the process.
Two costs are worth checking before you commit. Some providers charge an exit or transfer-out fee, particularly on investment ISAs, and moving investments as cash means time out of the market while the sale and repurchase settle. Neither is a reason to avoid transferring, but both are reasons to read the small print first.
The Lifetime ISA and Junior ISA catches
The general rules have two important exceptions. A Lifetime ISA can be transferred, but if you move money out of a LISA to a different type of ISA, or withdraw it for anything other than a first home or after age 60, you pay the government’s 25% withdrawal charge, which can leave you with less than you put in. Junior ISAs also have their own transfer rules and can only be accessed by the child at 18. Read our Lifetime ISA explainer before moving one, because the penalty makes this the one transfer where the wrong move genuinely costs money.
The short version
Choose the new ISA, fill in its transfer form, and let the providers move the money between them. Never withdraw it yourself. Check for exit fees and whether you are switching type, allow 15 working days for cash and up to 30 days for anything with investments, and treat Lifetime ISAs with extra care. Get those right and moving an ISA is genuinely painless, and often the highest-return ten minutes of admin in your financial year. For the wider picture on allowances, see ISAs explained.
Frequently asked questions
Can I transfer an ISA without losing my allowance? Yes, as long as you use the formal transfer process. Contact the new provider, fill in their ISA transfer form, and let the two providers move the money between them. Withdrawing the cash yourself and paying it into a new ISA does use up your allowance, and that part cannot be reinvested.
How long does an ISA transfer take? A cash ISA to cash ISA transfer should complete within 15 working days. Any other transfer, including one involving a stocks and shares ISA, is allowed up to 30 calendar days. If it runs longer, chase the receiving provider, who manages the process.
Can I transfer a cash ISA into a stocks and shares ISA? Yes. You can change ISA type during a transfer, moving cash to investments or investments to cash, without using your annual allowance or triggering tax. It is a common way to move idle cash into the market, or to de-risk near a goal.
Can I transfer only part of my ISA? Yes. You can transfer all or part of the money in your ISA, from both current and previous tax years, at any time. Previous years’ money is especially flexible and can be split across several receiving ISAs.
Are there any ISAs I should be careful transferring? Lifetime ISAs and Junior ISAs. Moving money out of a Lifetime ISA to a different ISA type, or withdrawing early, triggers a 25% government charge. Junior ISAs have their own rules and stay locked until the child turns 18.
