Investment Return Calculator
Estimate how your initial investment and regular contributions could grow over time based on an assumed annual rate of return.
Calculate Your Investment Growth
Enter your investment amount, contributions, expected return and investment period to estimate your potential future value.
Investment Details
Your starting positionContribution Frequency
How often you add moneyEstimated Investment Value
Based on the information you entered
Investment Insight
Enter your investment details to see how your contributions and assumed investment return could affect your estimated future value.
About the Investment Return Calculator
The Investment Return Calculator estimates the potential future value of an investment based on an initial investment, recurring contributions, an assumed annual rate of return and the length of time the money remains invested.
The calculation illustrates the mathematical effect of compounding. It does not predict what a particular investment will actually earn.
Actual investment results can vary significantly because investment returns are uncertain and can change from year to year.
How to Use the Calculator
Enter Initial Investment
Enter the amount you plan to invest at the beginning of the investment period.
Add Contributions
Enter how much you expect to contribute on a recurring basis.
Set Return & Time
Enter an assumed annual return and the number of years you plan to remain invested.
How It Works
The calculator compounds the investment using the selected annual return and contribution frequency. Regular contributions are incorporated throughout the investment period.
The final result is separated into the amount contributed and the estimated growth generated by the assumed return.
Why Time Matters for Investing
When investment returns are reinvested, future returns can be earned on both the original money and previous investment gains. This is commonly referred to as compounding.
The effect can become increasingly significant over longer investment periods because the money has more time to compound.
Suppose you invest $10,000 initially, contribute $500 each month, assume an 8% annual return and remain invested for 20 years. The calculator estimates the resulting future value using those assumptions.
Investment Gains vs. Contributions
Your final investment value consists of money you put into the investment plus the growth generated by the assumed investment return.
- Initial investment
- Recurring contributions
- Compounded investment growth
The calculator displays these components separately so you can see how much of the estimated future value comes from your contributions versus investment growth.
Understanding the Rate of Return
The annual return entered into this calculator is an assumption, not a guaranteed investment outcome.
Real investments may experience positive and negative returns. Taxes, fees, inflation and other factors can also affect actual results.
Investment Return Does Not Equal Profit Guarantee
A projected investment value should be treated as an estimate based on the assumptions entered. It should not be interpreted as a prediction of actual market performance.
Changing the expected annual return, contribution amount or investment period can substantially change the estimated result.
For long term planning, it can be useful to test multiple return assumptions rather than relying on a single projection.
Frequently Asked Questions
What is investment return?
Investment return is the gain or loss generated by an investment over a particular period. It can come from changes in value, income or both.
Does this calculator account for compound growth?
Yes. The calculation compounds the assumed return according to the selected contribution frequency.
Does the calculator account for taxes and fees?
No. Taxes, investment fees and other costs are not included in the basic calculation.
Can I use this calculator for stocks?
You can use it to model a hypothetical investment scenario, but the result should not be interpreted as a forecast of stock market performance.
This calculator is provided for educational and informational purposes only. It is not financial or investment advice. Investment returns are uncertain, and actual results may differ from the estimates shown. The calculator does not account for taxes, fees, inflation or other investment specific factors.