skip to main content
ISA Calculator /

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 »

Cash ISAs

ISAs are a tax-advantageous way to save or invest, check out some of the ISA options below

ISAs Products

Fund ISAs

There are a range of types of fund ISA

Fund ISAs: 

Stocks & Shares ISAs

Types of Stocks and Shares ISA include: 

Stocks and Shares ISAs

Latest News

What is the best investment ISA?

20th June 2017

People often ask: “what is the best investment ISA?” The answer to this question is not a simple one, with the best investment ISA for you depending on a number of factors. 

Newsletter Signup

Sign up to our Newsletter to get exclusive news and offers direct to your inbox.

About us

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.

About us

4.89 Average

35 Reviews

Paul

Very informative, find myself a good ISA account with best return in terms of interest.

Anonymous

Easy to navigate, all required information was to hand. Professional looking site!

Jessica Esa

ISA.co.uk has a really attractive and simplistic design. I've found it easier to use than other similar comparison sites. The products are simply described, it's informative and the pros and cons are really clear. Great website.

Sue

Easy to use website and up to date. Saved the link on my tablet.

Rob Holden

The website was very useful and informative.

Andrew Johnson

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

Crowd2Fund

Excellent website - clear and helpful information about different products - and a trustworthy partner.

Anonymous

Quick and professional service provided

Anonymous

Very insightful and easy to navigate.. would recommend to anyone interested

Helen Belcher

Clear concise information that was easy to understand!

Sue

Easy to use website and up to date. Saved the link on my tablet.

Adam

simple, informative and clear - found what I was looking for straight away. Thank you.

Steve

Really simple to use and all the information was clear with lots of products available. The interest calculator was really handy too. Have bookmarked and will definitely use again.

Marion

Very helpful site for my investment isa

Hannah Gordon

This was a really user-friendly site, and was very helpful when it came to comparing accounts and choosing my 2016 ISA.