skip to main content
Homepage /

Cash ISA Calculator

How much could your cash isa be worth?

Click here for ISA Calculator »

Deposit Cash ISAs

The Callable Deposit Plan

from IDAD

ISA Option
Maximum Potential Return 3.50% pa or 50% x FTSE growth
  • Deposit Taker: Goldman Sachs International Bank
  • Term: Up to 7 years

Important Information: This is a structured deposit plan and is capital protected. There is a risk that the company backing the plan or any company associated with the plan may be unable to repay your initial investment and any returns stated. In this event you may be entitled to compensation from the Financial Services Compensation Scheme (FSCS), depending on your individual circumstances. In addition, you may not get back the full amount of your initial investment if the plan is not held for the full term.

  • Plan can be ended early by Deposit Taker
  • 3.5% per annum if plan ends early
  • 50% x FTSE 100 Index growth if plan runs full term
  • Capital protected product*
  • Eligible for the Financial Services Compensation Scheme (FSCS)
  • If plan runs full term returns not guaranteed. You may only receive a return of your original capital
  • Minimum investment £10,000
  • If you withdraw your money during the plan you may get back less than you originally invested

Important Information: * The return of your initial deposit depends on the ability of the deposit taker (Goldman Sachs) to repay your money. Structured deposits offer you the potential to earn higher returns than you would with a regular savings account. Your returns are based on the performance of an index or commodity. If the investment does not perform well you may receive no income or capital growth, but you can be confident that your capital will be repaid. You have no access to your deposit during the term of the account, typically 3 to 6 years but your original capital will be repaid in full at the end of the term. In the event that the deposit taker is unable to repay your initial investment and any returns stated you may be entitled to compensation from the Financial Services Compensation Scheme (FSCS) depending on your individual circumstances.

Cash ISA Calculator

Click here for ISA Calculator »

A cash Individual Savings Calculator is a program, mostly online, that helps you determine how much interest you could gain as interest on an ISA investment. While these tools only give a projection of the amount, they give valuable insight as to whether a certain interest rate is favorable and how much should be invested into the ISA regularly to give the best interest gains. A cash ISA calculator should not be used as the final determinant or decision maker when it comes to committing to a cash ISA. This is because it operates on assumptions to calculate a possible outcome on investment. That investment may gain more or less than estimated and is not an accurate measure.

Investment ISA Idea

Assumptions made on calculation

One of the assumptions made is that the individual will deposit money into the account on a regular basis. Cash ISAs give a lot of leeway when it comes to withdrawals and deposits. For that reason, it is not always necessary that an individual deposit money into the account on a regular basis in as long as the final tally on deposits does not exceed the cash ISA allowance limit.

Another assumption is that the market will be steady and the rates will be productive. Capital markets fluctuate all the time throughout the tax year. The market may grow or stunt considerably affecting the economical rates on conversion for the currency. Due to such changes therefore, the interest gained tends to fluctuate.

Another assumption made is that there shall be fixed tax rules throughout the duration of the tax year. The current tax allowance for ISAs exempts them from having to be taxed on interest made. However, the rules might change and in such a scenario, the tax rate could affect the projected figures.

It is also an assumption that there shall be no withdrawals made on the account. Most of the calculators work under the premise of compound interest. A withdrawal, which in reality will happen at one point or the other, has significant impact on interest.

Benefits of a cash ISA calculator

One of the benefits of using a cash ISA calculator is that it helps you predict your annual growth on a certain interest rate. From this prediction, you can then determine whether the interest rate offered is sufficient for your goals or whether you need to find a different rate elsewhere.

An ISA calculator also helps in determining how much money you should deposit on a regular basis, and at what time interval, to make it to the allowance limit, without having to compromise your financial situation.

Click here for ISA Calculator »

High Income ISAs

High income ISA ideas:

ISAs Products

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". 

Newsletter Signup

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

About us 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

4.74 Average

23 Reviews


I found the way the different options are presented very clear - much more useful than some other comparison sites. I sent it to my daughter as well.


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


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