• ISAs
  • ISA Calculator

ISA Calculator

Use our ISA calculator for a quick and easy way to see how much your monthly or annual ISA investments could be worth in the future.

Option 1 will show you how much your monthly or annual investments could add up to over the time period you want to invest. Or, use Option 2 to enter a goal savings figure and see how much you need to save each month or each year, to reach it.


Tell us how much you want to save each month or each year, and how long you are looking to invest for, and we'll show you its potential end value at growth rates of 2%, 5% and 8%, and with example initial and ongoing charges. Re-calculate with different amounts as many times as you wish.

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Maximum allowances for the 2017/18 tax year are £1666.66 per month, or £20,000 for the year

The ISA calculator

The figures shown are only examples and not guaranteed, such forecasts are not a reliable indicator of future performance. They are not minimum or maximum amounts.  What you get back will depend on how your investments grow, how much you invest and will depend on the charges incorporated for your investments.  You could get back more or less than the calculator indicates. Please note that inflation will reduce what you can buy in the future with the amounts shown. 

The value of investments can fall as well as rise and you may get back less than you invest. Tax savings and eligibility to invest in an ISA will depend on personal circumstances and all tax rules may change in the future. Fidelity does not give advice, if you are unsure of the suitability of an investment, please contact an authorised financial adviser.

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Please remember, the value of tax savings in a ISA depends on personal circumstances.

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If you have any questions, please call our freephone UK-based team.

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0333 300 3350

Monday to Friday, 8am to 6pm
Saturday 9am to 6pm.

Please be aware that we cannot give advice. If you want a recommendation please see an authorised financial adviser. Different terms will apply.