Estimate your real investment return (CAGR) based on what you invested and what it’s worth today. Enter your starting balance, optional monthly contributions, how long you invested, and your current value.
This tool estimates an annualized return (CAGR). With monthly contributions, the result uses an approximate internal rate of return based on equal monthly deposits.
Tip: Want to plan future growth instead of measuring past performance? Try the Compound Interest Calculator.
If you’ve ever looked at an investing account and wondered, “What is my real return?”, you’re not alone. Your balance can grow because the market went up, but it can also grow because you added money every month. This page helps you separate those two effects by calculating an annualized investment return. In other words, this investment return calculator estimates the yearly growth rate that best explains your results.
The key output is CAGR (compound annual growth rate). It answers a practical question: “If my investment had grown at one steady rate each year, what rate would turn my starting amount and contributions into today’s value?” This is especially useful when you want to compare different investments, time periods, or strategies using one number.
This tool is designed for real-life inputs: a starting balance, an optional monthly contribution, a time period, and a current value. It then estimates your annualized return.
Note: This calculator does not automatically subtract fees, taxes, or inflation. To understand purchasing power, use the Inflation Calculator.
The results section shows four numbers. Here’s how to read them like an investor (not just as math):
Let’s walk through a simple example without monthly contributions first, because it shows the core idea of CAGR.
Example A (no contributions):
CAGR formula: CAGR = (Final / Start)^(1/Years) − 1
In this case: (16,500 / 10,000)^(1/5) − 1 ≈ 10.5% per year. That means a steady 10.5% compounded yearly growth would take $10,000 to about $16,500 in five years.
Now let’s add the realistic part: regular monthly deposits. When you add money each month, the “true performance” should consider the timing of deposits. A deposit made last month has less time to grow than a deposit made five years ago. That’s why the calculator estimates an internal rate of return (IRR-style) when contributions are included.
Example B (with contributions):
Total invested ≈ $10,000 + $200 × 60 = $22,000. Total gain ≈ $26,000 − $22,000 = $4,000. Your annualized return is the rate that makes those monthly deposits compound to roughly $26,000 by the end.
Tip: If your CAGR looks “lower than expected” here, it may be because much of the ending balance came from contributions, not market growth.
This annualized return calculator is best when you want a clear “apples-to-apples” number for performance. Use it when you want to:
Many people search for “average stock market return” to judge whether they are doing well. Benchmarks are useful, but remember: benchmarks are not guarantees, and your real-life return depends on what you invested in and when. To understand your real return (purchasing power), consider inflation too.
If your annualized return is 8% but inflation is 3%, your inflation-adjusted return is closer to 5%. You can explore this effect with the Inflation Calculator.
Measuring return is one part of the story. The next step is using that insight to plan. If you’re building toward a target amount, the Savings Goal Calculator helps you calculate how much to save monthly. If you’re paying down high-interest debt, improving your cash flow can sometimes beat chasing higher returns — use the Debt Payoff Calculator to see the impact of extra payments.
And if your goal is forward-looking growth, the Compound Interest Calculator helps you model future value under different contribution schedules and compounding assumptions.
| Metric | What it tells you | Best used for |
|---|---|---|
| Total gain / loss | How much you are up or down compared to what you deposited. | “Am I ahead overall?” and goal tracking. |
| CAGR (annualized return) | Your estimated yearly compounded performance over time. | Comparing investments and performance across different time periods. |
| Monthly return (approx.) | A monthly equivalent of your annualized rate (for intuition). | Understanding what “8% yearly” roughly feels like month-to-month. |
CAGR (compound annual growth rate) is the constant yearly rate that would turn your starting value into your ending value over a given number of years. It’s useful because it makes different investments comparable using a single annual percentage.
Yes. If you enter a monthly contribution, the calculator estimates an annualized return assuming equal monthly deposits. This is more realistic for people who invest regularly (for example, monthly index fund contributions).
Often it’s because contributions make the ending balance larger even if market growth was modest. Annualized return focuses on performance (growth), while total balance reflects both growth and how much you deposited.
Not exactly. CAGR is a compounding-aware (geometric) measure. A simple average can overstate performance when returns vary. CAGR is usually the better metric for long-term comparisons.
No. Those factors can reduce your real return. To estimate how inflation affects purchasing power, use the Inflation Calculator. Fees and taxes depend on your platform and jurisdiction.
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