Find the monthly investing amount to reach a target portfolio value.
The current value compounds to its future size first, then the monthly deposit needed to reach the target in time is solved from the annuity formula. Knowing the required monthly number upfront turns a distant target into an actionable recurring payment instead of a hope.
Investment Goal
Solve (1+i)^n for the growth, then the deposit that fills the remaining gap
Solve (1+i)^n for the growth, then the deposit that fills the remaining gap The current value compounds to its future size first, then the monthly deposit needed to reach the target in time is solved from the annuity formula.
Knowing the required monthly number upfront turns a distant target into an actionable recurring payment instead of a hope.
This calculator takes 4 inputs: Target amount, Current value, Annual return, Years to goal. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.