ISA calculator
Stay on track the easy way – use our ISA calculator.
With investment your capital is at risk.
Please read about how our calculator works before trying it out.
The value of your investment, and any income from it, can go down as well as up, and you can get back less than you originally invested. Please remember all calculations shown here are examples and not intended to forecast the value of your investment or any tax savings.
About our ISA calculations – we have assumed:
- You are investing at the start of the tax year.
- No withdrawals are made for the duration of the investment stated in question 3
- You will invest any monthly investments you have specified in question 2 every year for the duration of the investment stated
- The annual growth rate of your ISA depends on the risk level you have chosen. The projection is net of the 1% total annual fee and rounded down to the nearest pound. Actual charges may vary
- Dividends are reinvested
- ISAs remain tax-free for the duration of your investment. However, you should remember that the tax treatment of ISAs may change in the future
- Results do not take account of inflation
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Frequently asked questions about ISA calculators
How are ISA investment returns calculated?
Calculations for ISA investment returns depend on 3 factors:
- how your investments perform
- your individual investment style or risk profile
- your investment timeline
What's the difference between simple and compound interest?
Simple interest is earned on the original investment amount. Compound interest is earned on the original investment amount and the interest, and results in exponential growth.
Are ISAs included in inheritance tax calculations?
Yes, if the value of the estate is more than £325,000. If the ISA is passed on to a husband, wife or civil partner they are usually exempt from inheritance tax calculations.