I did this yesterday and it seems like easy money to me. Transfer from £1 from a current ISA to get the cashback of £80. The signup is a little lengthy, but if you can spare the 15 minutes and sending off a form, then it is worth doing. Personally I thought the Stocks and shares ISA looked quite good, so I invested a bit more than £1. Please be aware, you are investing in a Stocks and Shares ISA - your money can go up or down. Transfer of up to £10k incurs no charges in the first year - you may want to remove your investment after a year if you don't want to be charged - although the charges do look low, so if it's done well, you could leave it in.