Hi. I have an isa with a very low rate that I haven't really touched in years. It has 8k in it. I was wondering if I could move this to a higher paying ISA with my own bank and top it up to 20k. Will I then get interest on the full amount come April? If I then invest another 20k next year, do I get tax free interest on the full 40k? Not sure where to put my savings now I finally have some! I've tried looking up the info myself but I can't really find the answer. Any information would be really welcomed.