What is CAGR (Compound Annual Growth Rate)?
CAGR — Compound Annual Growth Rate — measures the mean annual growth rate of an investment over a specified period longer than one year. Unlike simple average returns that can be misleading, CAGR smooths out volatility and shows you the steady rate at which your investment would have grown if it compounded uniformly each year.
CAGR is widely used by investors, financial analysts, and businesses to compare performance across different investments, evaluate fund managers, project future growth, and make informed allocation decisions. It’s the single most useful metric for understanding long-term investment returns.
CAGR Formula
The CAGR formula is: CAGR = (Ending Value / Beginning Value)^(1/n) − 1, where n is the number of years. For example, if ₹1,00,000 grows to ₹2,50,000 in 5 years: CAGR = (2,50,000/1,00,000)^(1/5) − 1 = (2.5)^0.2 − 1 = 20.11% per annum.
CAGR vs Other Return Metrics
| Metric | Best For | Limitation |
|---|---|---|
| CAGR | Lumpsum investments, comparing across periods | Ignores volatility and interim cash flows |
| XIRR | SIPs and irregular investments | Complex calculation, sensitive to timing |
| Absolute Return | Short periods (under 1 year) | Doesn’t account for time period |
| Rolling Returns | Consistency analysis | Multiple data points to interpret |
Historical CAGR of Indian Asset Classes
| Asset Class | 10-Year CAGR | 20-Year CAGR |
|---|---|---|
| Nifty 50 | 12-14% | 14-16% |
| Gold | 11-13% | 10-12% |
| Fixed Deposits | 6-7% | 7-8% |
| Real Estate (metro) | 5-8% | 8-12% |
| PPF | 7.1% | 8-8.5% |
When to Use CAGR vs XIRR
Use CAGR when you’ve made a single lumpsum investment and want to know the annualized return. Use XIRR when you have multiple cash flows at different times — such as SIP investments, partial withdrawals, or dividend reinvestments. For SIP investors, CAGR of the total portfolio understates true returns; XIRR gives a more accurate picture.
Limitations of CAGR
CAGR doesn’t show risk or volatility — two investments can have the same CAGR but vastly different risk profiles. It also assumes a smooth growth path, ignoring the actual sequence of returns. An investment that fell 50% in year 1 and recovered 200% in year 2 has the same CAGR as one that grew steadily at 41.4% each year, but the investor experience is drastically different.
What is a good CAGR for equity investments in India?
A CAGR of 12-15% over 10+ years is considered good for equity investments in India. The Nifty 50 has delivered approximately 12-14% CAGR over most 10-year periods since inception. Midcap and smallcap indices have delivered 15-18% CAGR over longer periods but with significantly higher volatility.
Can CAGR be negative?
Yes, CAGR is negative when the ending value is less than the beginning value. For example, if ₹1,00,000 becomes ₹70,000 in 3 years, the CAGR is (0.7)^(1/3) − 1 = −11.27%. This means the investment lost approximately 11.27% per year on average.
How do I calculate CAGR for my mutual fund SIP?
For SIP investments, CAGR isn’t the appropriate metric because you’re investing at different dates. Instead, use XIRR which accounts for the timing and amount of each installment. You can calculate XIRR in Excel or Google Sheets using the XIRR function with your actual investment dates and amounts.
Is CAGR the same as compound interest rate?
CAGR and compound interest rate are conceptually similar but not identical. Compound interest rate is a stated/guaranteed rate (like FD interest), while CAGR is calculated retrospectively from actual market returns. A 7% FD guarantees 7% compounding; a mutual fund’s 12% CAGR is a historical measure that doesn’t guarantee future returns.