Saving & investing / Rebuilt
Compound interest
See a year-by-year savings projection with explicit monthly contributions.
Your assumptions
01 / 02Your scenario
02 / 02Projected balance
Initial example. Change assumptions to explore a scenario.
Total contributed—
Modelled interest—
Duration—
Balance over time (€)
Result breakdown (€)
| Year | Total contributed | Interest | Balance |
|---|
The method, not a black box
Monthly compounding at a constant nominal annual rate. Timing controls whether each contribution earns interest that month.
Bₘ = Bₘ₋₁ × (1 + r/12) + C ; début de mois : Bₘ = (Bₘ₋₁ + C) × (1 + r/12).
What the result does not tell you
Illustration, not a return forecast or guarantee. Excludes inflation, fees, taxes and changing market returns.
Starting values are examples. No result guarantees a return, credit decision or tax treatment.