Your ISA allowance can be spread across four types of ISAs.
Interest is exempt from income tax no matter how much you earn.
A Cash ISA is available to UK residents as a tax-efficient savings account.
A Cash ISA is a type of savings account that works in much the same way as a regular savings account, with the key difference being that it offers tax-free interest.
You can save up to £20,000 per tax year into a Cash ISA which is a limit set by the UK Government (known as your ISA allowance) and enjoy the tax-free benefit on any interest you earn.