Use the ISA transfer process
Contact the new provider and complete its ISA transfer form. Withdrawing the money yourself and paying it into a different ISA can affect the tax treatment and your allowance.
Check both sets of account terms
Confirm that the receiving account accepts your transfer and check the existing account for transfer restrictions or charges. Fixed accounts may charge an early closure penalty. A comparison of new interest does not deduct exit charges from your current account.
Allow for the transfer time
GOV.UK says transfers between Cash ISAs should take no longer than 15 working days. Interest treatment during a transfer depends on the providers. Our 12-month estimate starts once the full deposit is in the new account.
Existing balances and new money
The form’s Yes option treats the entered amount as existing ISA money transferred through the provider. If you are mixing a transfer with new contributions, check your remaining allowance separately.
GOV.UK · Transferring your ISA
Checked 1 October 2026. General information, not personalised financial advice.