Required monthly contribution

Solve for the monthly savings needed to hit a target balance in N years at an assumed return.

Target balance ($)

Starting balance ($)

Annual return: 7%Years: 25

Monthly contribution

$1,234

Total contributed: $370,338 · Compounded gain: $629,662

Formula

Solve FV = P(1+r)ⁿ + C × ((1+r)ⁿ − 1) / r for C, where r is the monthly rate, n is the number of months, P is the starting balance and FV is the target.

Illustrative only. Calculator outputs assume constant inputs and ignore taxes, fees, inflation, and market volatility unless stated. For research and educational purposes only — not financial advice.