Investment goal calculator

How Much Should I Invest Each Month to Reach My Goal?

Set your own target instead of starting with a fixed $1 million goal. The calculator estimates the monthly contribution that could reach it under your assumptions.

Calculate your monthly target

Required monthly contribution
Starting amount grows to
Value from monthly contributions

Assumes monthly compounding and end-of-month contributions.

How to use an investment goal

Start with the amount you already have, choose a target and time horizon, then enter an assumed annual return. Try several assumptions rather than treating one result as a promise.

Why this differs from the $1 million calculator

The math is the same goal-seeking model, but this page is designed around any target: 100,000, 250,000, 500,000, 1 million or another amount meaningful to you. Our existing $1 million guide remains a focused example.

What the calculator assumes

Returns are modeled at a constant annual rate compounded monthly, with contributions at the end of each month. Taxes, fees and real-world market volatility are not modeled.

Important: Educational hypothetical only. Actual investment returns are uncertain and can be negative.