Once you return the form to us, we’ll ask your existing Cash ISA provider within 5 business days to arrange for your funds to be transferred to your Tesco Bank Cash ISA. For Cash ISAs, they have 5 business days from receiving the request to do this and the transfer should be completed within 15 business days of us receiving your form. We will start paying interest from the day your existing Cash ISA provider sends us your money or 16 business days after we receive your form (if this is earlier). Transfers from ISAs other than Cash ISAs may take up to 30 days.