Finance
Compound Interest Calculator
Project investment growth with monthly compounding.
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How this calculation works
Project investment growth with monthly compounding. Enter the starting balance, monthly contribution, annual return and duration to project monthly compounding.
Formula used
FV = P × (1+r)ⁿ + PMT × ((1+r)ⁿ − 1) ÷ r
Good to know
Results are estimates for informational purposes.
Example calculation
P = €10,000 · r = 6% ÷ 12 · n = 10 × 12 · PMT = €200
How to use this calculator
- Enter the starting balance, monthly contribution, annual return and duration to project monthly compounding.
- Check units and time periods before comparing two results.
- Change one input at a time to understand its effect.
Good to know
Illustrative estimate; fees, taxes and provider rules are excluded unless stated.
MethodologyFrequently asked questions
What does the Compound Interest Calculator calculate?
Project investment growth with monthly compounding. The result is calculated from the values you enter and the formula shown on this page.
Which assumptions does the Compound Interest Calculator use?
It applies FV = P × (1+r)ⁿ + PMT × ((1+r)ⁿ − 1) ÷ r. Values, fees, rules or timing not represented by an input are not added automatically.