Compound Interest Calculator

Enter parameters and see your capital growth over time.

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Parameters

Initial Amount

€

Starting capital.

Annual Rate

Nominal annual return.

Period

yrs

Number of years invested.

Annual Contribution

€

Deposited at the end of each year.

Monthly contribution

€

Optionally, add a monthly contribution. Leave 0 if none.

Monthly withdrawal

€

Amount withdrawn from the balance every month.

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No data to display

Fill in the form above and click Calculate to see a table and chart.

How does compound interest work?

Compound interest reinvests earnings each period, so returns begin to generate further returns. The longer the horizon and the more consistent the contributions, the greater the compounding effect.

Practical tips

Automate monthly contributions.
Reduce fees and taxes where possible.
Be patient—time is the strongest factor.