Free calculator
Compound growth calculator
Separate deposits from growth under a constant-return scenario.
Scenario balance—
Enter your assumptions to calculate.
A constant return is an assumption, not a forecast.
What this calculation assumes
Assumes end-of-month contributions and monthly compounding at (1 + annual rate)^(1/12) − 1. No taxes, fees or withdrawals. Dollars are illustrative units, not currency conversion.
The formula
Balance is updated each month as previous balance × (1 + monthly rate) + contribution. At 0%, growth is zero and only deposits increase the balance.
Inputs remain in your browser. Results are educational estimates, not recommendations or guaranteed outcomes.
Read: Compounding works both ways: returns, losses and the path between