--- title: CAGR — definition | RGM® Glossary url: https://realgrowthmatters.com/glossary/cagr-compound-annual-growth-rate/ updated: 2026-06-10 source_html: https://realgrowthmatters.com/glossary/cagr-compound-annual-growth-rate/ --- # Compound Annual Growth Rate (CAGR) C·A·G·R/ˈkɑmpaʊnd ˈænjuəl ɡɹoʊθ ɹeɪt/noun Growth as one steady annual rate — useful for comparing, but it smooths over the bumps along the way. Term : CAGR Is : Smoothed annual growth rate Formula : (End/Start)^(1/years) − 1 Hides : Year-to-year volatility ## Forms & parts of speech CAGR · noun Smoothed annual growth rate. "Revenue's **CAGR** was 22% over five years - even though two of those years were nearly flat." ## Definition in plain terms Compound annual growth rate (CAGR) is the constant year-over-year rate at which a value would have grown to get from its starting figure to its ending figure over a period, as if it grew smoothly every year. It answers 'what single steady annual growth rate produces this result?' and is computed as (ending value / starting value) raised to the power of (1 / number of years), minus one. It is one of the most common ways to express growth in marketing, finance, and business. ## The mechanics CAGR's value is that it smooths volatility into one comparable number. Real growth is lumpy — a metric might jump one year and stall the next — and CAGR collapses that path into the equivalent steady rate, which makes it easy to compare growth across different time periods, companies, channels, or investments on a like-for-like basis. That smoothing is also its limitation: CAGR describes only the start and end points, so it hides everything in between. A 20% CAGR could come from steady 20%-a-year growth or from a wild ride that happened to land at the same endpoint, and the two have very different risk and meaning. CAGR is also sensitive to the choice of start and end dates (a low or high starting point can flatter or depress it) and says nothing about volatility, so it should be read alongside the actual year-by-year figures, not instead of them. It is a summary, not the whole story. ## When it matters CAGR matters most when comparing growth over multi-year periods on a consistent basis — sizing a market, comparing channels or cohorts, or summarizing a metric's trajectory for a plan or a board. The discipline is to use CAGR as a comparison and summary tool while remembering what it conceals: pair it with the year-by-year path to see volatility, be honest about start- and end-date choices that can game the number, and never let a smooth CAGR disguise a volatile or unsustainable reality. Used as a clean comparison metric it is invaluable; used as the only lens on growth, it can flatter a shaky trajectory into looking steady. **Worked example.** A team reports a 22% revenue CAGR over five years and a plan built on it assumes smooth, dependable growth. The year-by-year figures tell a different story: two strong years bracketed two nearly flat ones and one decline, and the smooth CAGR hid all of that volatility. Worse, the flattering number leaned partly on a deliberately low starting year. Reading CAGR alongside the actual path corrects the picture — the business is growing, but lumpily and with real risk — so the plan is rebuilt on the true trajectory. CAGR stays useful as a clean comparison across periods, but the team stops letting one smoothed rate stand in for the volatile reality beneath it. **Failure modes to watch.** Letting a smooth CAGR disguise volatile or unsustainable year-to-year reality; cherry-picking start and end dates to flatter the number; reading CAGR without the actual path beneath it; and treating a summary rate as if it described the journey, not just the endpoints. ## Synonyms & antonyms ### Synonyms compound annual growth rateCAGRannualized growth rate ### Antonyms year-over-year volatilityraw period growth ## Origin & history CAGR is a standard quantitative measure from finance and investing applied widely across marketing and business analytics; the term names the geometric-mean growth rate that smooths a series to a single annualized figure. Its formula derives from compound-growth mathematics long used in finance to annualize returns over multiple periods. Etymology: [source](https://en.wikipedia.org/wiki/Compound_annual_growth_rate). ## Usage trends Search interest for this term over the last five years: [View interest-over-time on Google Trends →](https://trends.google.com/trends/explore?q=cagr&date=today%205-y) ## Common questions What is CAGR (compound annual growth rate)? : The constant annual rate at which a value would have grown to reach its end figure over a period, smoothing year-to-year volatility into one comparable number. How is CAGR calculated? : (Ending value / starting value) raised to the power of (1 divided by the number of years), minus one. What does CAGR hide? : Everything between the start and end points — year-to-year volatility — and it is sensitive to the chosen start and end dates, so it should be read alongside the actual path. ## Related tools & calculators - tool[CAC calculator](/tools/cac-calculator/) - tool[LTV:CAC calculator](/tools/ltv-to-cac-ratio-calculator/) ## Resources & people to follow - reference[Wikipedia — Compound annual growth rate](https://en.wikipedia.org/wiki/Compound_annual_growth_rate) - referenceFinancial and growth-metric references - referenceRGM analysis — use CAGR to compare; read it alongside the year-by-year path Curated, non-competitor resources verified per term. ## Related training - module[Growth marketing](/training/growth-marketing-foundations/) ## Disciplines Areas of marketing where compound annual growth rate (cagr) is a core concern: [Growth strategy](/training/growth-marketing-foundations/)[Performance marketing](/training/performance-marketing-foundations/) ## Read next ## Related terms [Customer lifetime value](/glossary/clv/)[Customer acquisition cost](/glossary/customer-acquisition-cost/)[Retention rate](/glossary/retention-rate/)[Churn rate](/glossary/churn-rate/)[Conversion rate](/glossary/conversion-rate/) ## Sources 1. trends[Google Trends — "cagr"](https://trends.google.com/trends/explore?q=cagr&date=today%205-y)