€ 0
Time for an amount to double
Effective return per year
Compound interest
Compound interest calculator
See how an amount grows when the interest earns interest too. With a starting amount, a fixed monthly deposit and a chart of every year.
Year by year
| Year | Deposits | Interest | Balance | In today's money |
|---|
How we calculate
Every month the balance grows by the yearly rate divided by twelve. That interest is added every month or once a year, as you choose. From then on the interest earns interest too.
Your monthly deposit is made at the end of each month, so it earns interest from the next month on.
A return is not fixed: when investing it can be lower or negative. Tax, bank or broker fees and changes in the rate are not part of this calculation.
This is an estimate, not a forecast. This is not personal tax advice or investment advice.