Revenue moving from $1 million to $4 million across four years did not grow smoothly. It may have tripled in year one and flattened afterward, or climbed steadily throughout. CAGR gives the single annual rate that would have produced the same endpoint if growth had been constant.
CAGR = (Ending Value ÷ Beginning Value)^(1 ÷ n) − 1
Where n is the number of years in the period.
Worked example. A company reports $2 million in revenue in 2021 and $6.5 million in 2025, four years of growth.
CAGR is 34.2%.
Year-over-year figures are noisy. A company might grow 80% one year, 12% the next, and 45% after that. Listing those three numbers communicates less about trajectory than a single compound rate does.
CAGR appears in investor materials, board reporting, and financial models for that reason. It permits comparison across companies with different growth patterns and across periods of different lengths.
CAGR describes two endpoints and nothing between them. Two companies can post identical CAGR with completely different underlying performance.
Company A: $2M → $3M → $4.5M → $6.5M. Steady compounding. Company B: $2M → $6M → $3M → $6.5M. Severe volatility.
Both report 34.2% CAGR across four years. Only one is a business worth underwriting.
CAGR also masks decelerating momentum. A company growing 60% in year one and 15% in year four posts an attractive compound rate while the trend points down. Annual figures belong next to the CAGR, not behind it.
CAGR applies to any metric tracked across multiple years: customer count, average order value, gross profit, headcount.
Accuracy depends entirely on the underlying data. If revenue recognition changed partway through the measured period, or if the business grew through acquisition without restating prior periods, the compound rate reflects accounting variation rather than operating performance.
It depends entirely on sector and stage. A 25% CAGR is strong in consumer packaged goods and unremarkable in early-stage SaaS. Comparing against sector medians is more useful than any absolute benchmark.
Yes. When the ending value is lower than the beginning value, the formula produces a negative rate, showing the average annual rate of decline across the period.
Average annual growth rate adds the yearly percentages and divides by the number of years, which overstates growth because it ignores compounding. CAGR accounts for compounding and produces a more accurate figure.
At least two. The metric is designed for multi-year periods and is not meaningful across a single year, where the simple growth rate already answers the question.
Because CAGR hides volatility and decelerating momentum. Two businesses with identical compound rates can have entirely different risk profiles, and only the annual detail reveals which is which.
