As interest rates are likely to fall soon, SWMBO "advised" me to move an old cash ISA and TOISA earning 5% to Nationwide's 6.1% fixed for 2 years. But that may well drop before the 30 days it takes to transfer, and I can't open the account now to secure the fixed rate with (say) 1 because I've already used my 3000 allowance for 2007/8 elsewhere. I'm sure HMRC would jump on me if I put 3001 in a cash ISA in one year.
So my question is - would it be better to put 2999 rather than 3000 into cash ISAs at the start of each tax year so you could secure a good fixed-rate ISA later? (Most accounts let you open with 1)