What is CAGR? The growth rate that smooths the noise
CAGR is the single constant annual rate that turns your starting value into your ending value — the standard way to compare returns.
CAGR (Compound Annual Growth Rate) is the steady yearly rate that would take your investment from its starting value to its ending value over a given period, as if it grew by the same percentage every single year.
The formula
CAGR = (Final Value / Initial Value)^(1 / years) − 1
If ₹1,00,000 becomes ₹2,50,000 in 5 years:
CAGR = (2,50,000 / 1,00,000)^(1/5) − 1 = 20.1%
So your investment grew at an effective 20.1% per year, even though the actual year-to-year returns were probably uneven.
Why CAGR is useful
- It smooths volatility into one comparable number.
- It lets you compare very different investments on equal footing.
- It reflects compounding, unlike a simple average of annual returns.
What CAGR hides
CAGR says nothing about the journey. Two funds with the same CAGR can have wildly different risk — one steady, one a roller-coaster. It also assumes a single investment and a single end value, so it is not the right metric for SIPs (use XIRR there).
Real vs nominal CAGR
A 12% CAGR with 6% inflation is only about a 5.7% real return — your true gain in purchasing power. Always sense-check long-term projections against inflation.
Try it
Plug your own numbers into the CAGR calculator — it also shows the inflation-adjusted real rate so you can see your true gain.
Bottom line: CAGR is the cleanest way to express and compare investment growth over time — just remember it smooths out all the bumps along the way.