See how your money multiplies over time — and how much of your wealth comes for free.
Final Balance
after 20 years at 7% p.a.
Total Contributed
€0
principal + additions
Interest Earned
€0
compounded growth
Money Multiplier
0×
final ÷ contributed
Rule of 72
— yrs
to double at this rate
Balance Breakdown Over Time
Principal, contributions, and interest earned year by year
Rate Comparison
Final balance at different annual return rates
| Year | Balance | Year Contributions | Cumul. Contributions | Year Interest | Cumul. Interest | Interest Share |
|---|
This free Compound Interest Estimator shows how money grows exponentially over time. Enter your starting balance, monthly contribution, and interest rate to see your final balance broken down into what you contributed versus what compound interest added for free. Supports different compounding frequencies, inflation adjustment, and side-by-side rate comparisons.