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IKM Holdings

Compound interest calculator

See how a starting amount and regular monthly saving could grow over time. Play with the numbers, especially the number of years.

£
£
£20,000 ISA allowance ≈ £1,666 a month (2026/27).
%
After fees. Real returns vary and can be negative.
years
Final value
£0
You paid in
£0
Growth
£0
Growth over time Bar chart showing the amount paid in and the investment growth for each year.
Paid inGrowth

Assumes the return is compounded monthly and contributions are made at the end of each month. Ignores inflation, tax and changing returns. How compounding works →