Compound Interest Calculator

Compounding calculator

See how your money grows over time with the power of compound returns.

Initial investment £10,000
£
Investment period 10 years
Rate of return 5.0% annual
%
Compounding frequency
Regular contribution £500 / month
£

Initial investment
£10,000
Total contributions
£60,000
Total returns
£24,170
Final value
£94,170
Breakdown of final value
Initial investment
Contributions
Returns

This calculator steps through each contribution period, applying compound growth at the selected frequency before adding each contribution. The rate of return is treated as a nominal annual rate divided by the compounding frequency. Contributions are assumed to be made at the end of each month. The rate of return used is an assumption for illustrative purposes only and does not represent a guaranteed return. Actual investment returns will vary and may be lower or higher than assumed. The value of investments can fall as well as rise. Your actual outcome will be affected by investment performance, the charges applicable to your investments, inflation and your personal tax position. Past performance is not a reliable indicator of future results. This calculator is intended for illustrative purposes only and does not constitute financial advice.