From April 6th 2012, the latest ISA limit increase allows you to save up to £11,280 in an ISA during the 2012/13 tax year, which means you will not have to pay tax on any interest earned.
Of your total ISA limit, you can save up to £5,640 in a Cash ISA and the remainder in a Stocks and Shares ISA, or, you can invest the entire amount in stocks and shares – it's up to you.
If you want to make the most of your ISA limit increase, find the ISA which offers the best rate for you – compare deals using our free tabled – and to make the most of your existing ISA investments, if you're not getting the best rate, you could transfer to another ISA.