Investment Return Calculator
Calculate investment growth, total return and ROI — with optional monthly contributions.
How Investment Returns Are Calculated
This calculator uses the standard compound interest formula with optional regular contributions. The ending value accounts for both the initial lump sum and any monthly contributions, each compounding at the specified rate. The historical average annual return for a globally diversified stock portfolio has been approximately 7–10% (before inflation) over long periods, though past performance does not guarantee future results.
This tool is for illustrative purposes only and does not constitute financial advice. Real investment returns vary significantly based on asset allocation, fees, taxes, inflation and market conditions. Consult a qualified financial adviser before making investment decisions.