FreeCalculators

Investment Return Calculator

Calculate your investment growth with our tool. Input your contributions and expected returns to see potential future value and growth breakdown.

Investment · Reviewed by FreeCalculators Editorial · Updated 2026-08-20

Your details

7% ≈ historical US equities after inflation.

Set 3% to see the future value in today's dollars.

Raise contributions yearly, e.g. with raises.

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How it works

The Investment Return Calculator is a powerful tool designed to help you estimate the future value of your investments. By inputting your initial investment amount, ongoing monthly contributions, and expected annual return rate, you can visualize how your money can grow over time. The formula used in this calculator is FV = Σ (contributions compounded monthly) + initial balance compounded, which means it accounts for both your contributions and the interest earned on your initial investment. This gives you a comprehensive view of your potential investment growth. For example, let's say you start with an initial investment of $25,000 and plan to contribute $750 each month for 20 years at an annual interest rate of 7%. Using the calculator, you would find that the future value of your investment would be approximately $308,000. This amount reflects not only your total contributions of $180,000 over the 20 years but also the interest accrued, showcasing the power of compound interest. Interpreting the primary output is straightforward: the future value indicates how much your investment is projected to be worth at the end of the specified period. This figure helps you assess whether your investment strategy aligns with your financial goals. It's essential to remember that this is an estimate based on the inputs provided, and actual returns can vary due to market fluctuations. One common mistake is to overlook the impact of changing contribution amounts or interest rates. If you modify your contributions or the expected return rate after starting your investment, it’s crucial to re-evaluate your projections, as these changes can significantly affect your future value. Always ensure that your inputs reflect your current financial situation and goals to get the most accurate estimate possible.

Formula


                FV = Σ (contributions compounded monthly) + initial balance compounded

Tips

  • Start investing early to take advantage of compound interest over time.
  • Regularly review and adjust your contributions based on your financial goals.
  • Consider diversifying your investments to mitigate risks and enhance potential returns.
  • Use this calculator periodically to track your investment progress and make informed decisions.

Frequently asked questions

What is the expected future value if I invest $25,000 for 20 years at a 7% annual return?
The expected future value would be approximately $308,000.
How does inflation affect my investment growth?
Inflation reduces the purchasing power of your returns, so it's important to consider it when calculating the growth in today's dollars.
Can I change the contribution amount after starting the investment?
Yes, you can adjust the contribution amount at any time, and the calculator will show you the updated future value.
What happens if I increase my annual return rate to 8%?
If you increase the annual return rate to 8%, the future value would rise to approximately $365,000 after 20 years.