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Barclays ISA Calculator

See how much interest you could earn with a Barclays ISA.

Try our free ISA calculator

Click here for our free ISA Calculator »

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).

ISA Investment Plan

Compare ISA deals to see which is best for you

Barclays is just one of many providers offering ISAs and there are also several different types, including cash ISAs, stocks and shares ISAs and innovative finance ISAs. Our free ISA calculator can guide you in determining which ISA will best match your savings goals.

The calculator lets you see the effect of three different factors:

  • Amount saved
  • Interest rate earned
  • Length of time saved for

This means you can see how much you could build depending on which ISA you choose and how much you can afford to deposit. Alternatively, you can see how much you need to save with different ISAs to reach a particular savings goal.

How reliable is our ISA calculator?

The total growth suggested by our calculator is based on the figures you provide, but can only be taken as an estimate as interest rates may vary over the lifetime of your ISA.

Our estimate assumes the following:

  • You will deposit money into your account on a regular basis
  • There will be no withdrawals made
  • The market will stay broadly steady
  • Interest rates will remain productive
  • There will be no reduction in the ISA tax-free savings allowance during the term of your account

Find out how much you could earn with a Barclays ISA

Curious how much you could build your savings with a Barclays ISA? Try out our free ISA calculator to see how much interest you could earn with any ISA.

Click here for our free ISA Calculator »

High Income ISAs

High income ISA ideas:

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Cash ISAs

Fixed Rate & Instant Access ISAs:

Cash ISAs: 

Stocks & Shares ISAs

Types of Stocks and Shares ISA include: 

Stocks and Shares ISAs

Latest News

5 Considerations for Your Next Investment ISA

15th March 2021

You've decided to invest your savings into a Stocks and Shares ISA. You'll be using your tax-free ISA allowance for this year before the deadline, while also investing your money for your future. But what do you need to consider before opening an account? We've put together a list of our top five considerations for you to think about before you click "apply". 

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ISA.co.uk is a trading style of Fair Investment Company.

We've been comparing and recommending ISAs for many years so you can trust you're in good hands.

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ISA can be confusing at first and this site includes a useful and helpful introduction into the world of ISAs