The CAGR formula explained
CAGR is the constant annualized rate that would connect a beginning value to an ending value if growth had compounded steadily over the full period. It is a smoothing measure, not a record of what happened in each individual year.
Toolmera uses CAGR = ((Ending Value ÷ Beginning Value)^(1 ÷ Years) − 1) × 100.
Formula((Ending ÷ Beginning)^(1/Years) − 1) × 100
ResultAnnualized compounded percentage rate
CAGR vs. total return and average annual return
Total return measures the overall percentage change from beginning to end without considering how long the period lasted. CAGR converts that start-to-finish change into one annualized compounded rate.
A simple average of yearly returns can be misleading because gains and losses compound multiplicatively. CAGR is geometric, but it still does not reveal the actual path of yearly returns.
What CAGR hides — and when XIRR is different
CAGR hides volatility and ignores intermediate deposits or withdrawals. Two investments can have the same CAGR even if one followed a smooth path and the other moved sharply up and down.
When cash flows happen on different dates, a cash-flow-aware measure such as XIRR is usually more appropriate than simple CAGR.