See your money grow with compound interest

Investment growth

Project the future value of a lump sum plus monthly contributions growing at compound interest.

Formula

future value = principal × (1+r)^n + contribution × ((1+r)^n − 1) / r, where r is the monthly rate

Assumptions

• Return is assumed constant and compounds monthly.
• Does not account for inflation, fees or taxes.

Frequently asked questions

Why does the monthly contribution matter so much?
Regular contributions compound alongside your starting balance — over long horizons, consistent monthly investing often contributes more growth than the initial lump sum.

Is this pre- or post-tax?
This is a gross growth projection. It does not deduct taxes on investment gains, which vary by account type and instrument.