Can anyone explain what I can do with multiple ISAs going forward please? I currently have 3 x Cash ISA accounts (all maxed up). They mature at slightly different rates when annual interest will be added to 2 of them. The third gets monthly interest. ISA 1 and 2 end in April (different dates); Cash ISA 3 ends late May.
Should I put them all into one ISA? (I also have £20k to buy another 25-26 ISA after April. I remember there being a time window of about 3 weeks when I opened the Santander one and after that I couldn't add in any more money. How do you do this when there's a month between the old ISAs coming to an end?
I'm a bit rubbish with all this to be honest. I can lock it away for a year, possibly more.