What Is CAGR?
CAGR stands for Compound Annual Growth Rate. It measures the smoothed annual rate of return that takes a value from its starting point to its ending point over a specific time period. Unlike simple averages, CAGR accounts for the compounding effect where each year's growth builds on the previous year's total.
The formula is: CAGR = (Ending Value / Beginning Value)^(1 / Number of Years) - 1
CAGR is used across finance, business, and investing to compare growth rates on an equal footing. It answers a straightforward question: "What steady annual rate would have produced this result?" Whether you are evaluating stock performance, revenue growth, or portfolio returns, CAGR gives you a single number that captures the compounded reality.
A venture-backed SaaS company that grew revenue from $2M to $12M over 4 years has a CAGR of 56.5%. That means if revenue had grown at exactly 56.5% each year with no variation, it would have reached the same $12M endpoint.
CAGR Benchmarks
What counts as a "good" CAGR depends entirely on the context. A 10% CAGR is strong for a retirement portfolio but weak for a Series A startup. Use the table below to benchmark your growth rate against common categories.
| Category | Typical CAGR | Notes |
|---|---|---|
| S&P 500 (historical) | ~10% | Long-term nominal average including dividends since 1926. |
| S&P 500 (inflation-adjusted) | ~7% | Real return after subtracting average inflation. |
| Bonds (U.S. aggregate) | 4-6% | Lower volatility, lower long-term growth. |
| Real Estate (U.S. residential) | 3-5% | Price appreciation only, excludes rental income. |
| SaaS Revenue (early stage) | 20-50%+ | Venture-backed companies targeting triple-triple-double. |
| SaaS Revenue (at scale) | 15-25% | Companies above $100M ARR. |
| GDP (U.S. nominal) | 5-6% | Includes inflation; real GDP growth is ~2-3%. |
| Global E-commerce Market | 12-15% | Market expansion rate through mid-2020s. |
| Gold (long-term) | 7-8% | Nominal; varies widely by time period selected. |
| Inflation (U.S. average) | 2-3% | Long-term target; higher in 2022-2024 period. |
Sources: NYU Stern (Damodaran), Federal Reserve Economic Data (FRED), and public company filings.
How to Calculate CAGR
The CAGR formula requires three numbers: beginning value, ending value, and the number of years.
CAGR = (Ending Value / Beginning Value)^(1 / Years) - 1
Worked example: You invested $50,000 in an index fund in 2019. By 2025, the investment is worth $88,000. The holding period is 6 years.
- Multiplier = $88,000 / $50,000 = 1.76x
- CAGR = 1.76^(1/6) - 1 = 0.0989 = 9.89%
- Total Growth = ($88,000 - $50,000) / $50,000 = 76%
This means your investment grew at a compounded rate of 9.89% per year. Even though the actual annual returns varied year to year, the smoothed rate that connects start to finish is 9.89%.
CAGR vs Average Growth Rate
CAGR and average (arithmetic mean) growth rate look similar but produce different numbers. The difference comes down to compounding.
| Metric | CAGR | Average Annual Return |
|---|---|---|
| Definition | Smoothed compound rate from start to end | Sum of yearly returns divided by number of years |
| Accounts for compounding | Yes | No |
| Uses only start and end values | Yes | No (uses each year) |
| Affected by volatility | Only indirectly (via end value) | No |
| Best for | Comparing different investments or time periods | Understanding typical year-to-year experience |
Why this matters: A stock that returns +40%, -20%, +30%, -10% over four years has an average annual return of 10%. But the CAGR is only 7.9% because the losses compound against the gains. The average overstates the actual growth. CAGR tells you what you really earned.
Why CAGR Matters
CAGR is the standard language of growth comparison because it normalizes different investments, time horizons, and volatility patterns into a single number.
Investment comparison. Suppose Fund A returned 85% over 5 years and Fund B returned 120% over 7 years. Which performed better? Fund A's CAGR is 13.0%. Fund B's CAGR is 11.9%. Fund A wins on an annualized basis, even though Fund B had a higher total return.
Business planning. Revenue CAGR is one of the first metrics in any investor pitch deck. It shows whether growth is accelerating, steady, or decelerating. A company presenting 35% revenue CAGR over 3 years signals a trajectory that investors can underwrite.
Goal setting. If you want to double your portfolio in 7 years, you need roughly a 10.4% CAGR. If you want to triple it in 10 years, you need 11.6%. CAGR makes backward planning straightforward.
Rule of 72. Divide 72 by your CAGR to estimate doubling time. At 12% CAGR, your investment doubles in about 6 years. At 24%, it doubles in about 3 years.
Limitations of CAGR
CAGR is a powerful metric, but it has blind spots you should understand before relying on it.
1. It hides volatility. CAGR only uses the start and end values. Two investments with the same CAGR can have vastly different risk profiles. One may have grown steadily; the other may have crashed 50% and recovered. CAGR treats them identically.
2. It is sensitive to endpoint selection. Choosing different start or end dates can change the CAGR dramatically. An investment measured from a market peak to a trough will show a negative CAGR, while measuring from trough to peak will show an inflated one. Always disclose the time period.
3. It assumes reinvestment. CAGR implicitly assumes all returns are reinvested. If you withdrew dividends or profits along the way, your actual experience differs from the CAGR figure.
4. It does not account for cash flows. If you added money to (or withdrew money from) an investment over time, CAGR does not capture this. For portfolios with multiple contributions, use Internal Rate of Return (IRR) instead.
5. Past CAGR does not predict future growth. A stock with a 15% CAGR over the last decade will not necessarily maintain that rate. Market conditions, competition, and business fundamentals change.
This calculator provides estimates for informational purposes only. It does not constitute financial advice. Actual investment returns depend on market conditions, fees, taxes, and individual circumstances. Consult a qualified financial advisor before making investment decisions.