Investment Growth Comparison
Set up to three what-if scenarios and compare how each could grow over the same period.
Investment Growth Comparison
Year-wise Projected Value
Assumptions & method
- Each scenario: value after each month = previous value × (1 + i) + monthly contribution, starting from the initial amount.
- Timing: the initial amount is invested at the start (month 0) and contributions at the end of each month.
- Return: each annual return is an effective annual rate held constant; the monthly rate is i = (1 + annual)^(1/12) − 1.
- All enabled scenarios use the same time period. Scenarios B and C can be switched off.
- These are hypothetical projections, not forecasts. They do not predict market performance and real returns will vary year to year.
- Fees, taxes and inflation are not modelled, so values are nominal. Enter net-of-fee returns for a more cautious view.
Results are estimates based on the figures you enter. They are not guarantees and not financial advice.
Why compare scenarios side by side?
Long-term investing involves a few levers you control, such as how much you start with, how much you add each month and how long you stay invested, and one you do not, which is the return. Putting up to three combinations next to each other makes the trade-offs concrete. You can ask whether a bigger starting amount beats a higher monthly contribution, or how much a lower return assumption hurts. Treat every line as a "what if", not a prediction. The projection holds the return constant, which hides the ups and downs real investors face, so keep a margin of safety in your plans.