Try our free ISA calculator
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Our free ISA calculator offers a fast, straightforward way to compare how different Barclays Cash ISAs compare with each other and ISAs offered by other providers.
The calculator lets you see how much interest you might earn depending on how much you deposit, the interest rate you are offered and how long you save for.
This can help you when deciding how to best use your tax-free ISA allowance, which for the 2017/18 tax year is £20,000 (or £4,128 for a Junior ISA).