How much can I invest in an ISA?

For the 2017/2018 tax year, the maximum you can invest in ISAs is £20,000. You can use this allowance in a single ISA — for example, put £20,000 into a cash ISA — or split it across multiple ISA types. The four main types include:

Remember that the Lifetime ISA has a £4,000 limit.

You can split your allowance across multiple ISAs as long as you stick to the £20,000 maximum in a single tax year.

The allowance does not roll over once a tax year ends, so make sure you save or invest before the tax year ends (which ends on April 5th 2018). The new tax year starts on April 6th 2018.

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