My Father In Law is a gambler. An absolute expert on odds and he calculates that the optimum amount to have in premium bonds today is £22,500.Obvioulsy there are no guarantees in life, but the thing is, you MIGHT win the big prize but you will definitely get a few hundred over the year and of course, you can cash out whenever you want.Seriously, stick it on a spreadsheet and do the maths, it stacks.It has to be better than the banks....