ISA offers you a lot of options to secure your precious amount as you like. The maximum deposit limit for an ISA per tax year is £10,200. Out of this maximum limit half can be saved in cash isas if you are interested to save money as cash while half can be invested in stocks and shares in the form of bonds, unit trusts and individual equities etc. In this way you not only allowed to avail these options but also have option to invest monthly or as lump sum amount in your ISA. So choose an ISA according to your financial capacity and priorities.