What is CAGR?
CAGR — Compound Annual Growth Rate — is the rate at which an investment would have grown if it had grown at a perfectly steady rate every year. In reality, investments fluctuate: they might gain 20% one year and lose 5% the next. CAGR averages that out into a single annual percentage that produces the same end result over the same period.
It's widely used to compare mutual funds, stock portfolios, business revenue growth, and any other metric that changes over multiple years. Unlike a simple average return, CAGR accounts for compounding — so it more accurately reflects real-world investment performance.
When to Use CAGR
Use CAGR whenever you need a single, clean annual return figure across multiple years. Common use cases include comparing two mutual fund schemes over different time periods, measuring a company's revenue or profit growth, evaluating real estate appreciation over decades, and benchmarking your portfolio against an index like the S&P 500 or Nifty 50.
CAGR vs. Absolute Return vs. Simple Average Return
Absolute return simply tells you the total percentage change — useful for quick reference but misleading when comparing investments of different durations. Simple average return adds up annual returns and divides by the number of years, but this is distorted by volatility (a 50% loss followed by a 50% gain does not break even, but the average return would be 0%). CAGR avoids both problems by using the geometric mean, which correctly models compounding growth.