--- title: Churn Rate — definition & meaning | RGM® Glossary url: https://realgrowthmatters.com/glossary/churn-rate/ updated: 2026-06-10 source_html: https://realgrowthmatters.com/glossary/churn-rate/ --- # Churn Rate churn rate/tʃɜːrn reɪt/noun The rate at which customers leave — the leak that acquisition has to keep refilling. Term : Churn Rate Part of speech : Noun Field : Growth & Lifecycle Also written : Customer churn ## Forms & parts of speech churn rate · noun The proportion of customers or revenue lost in a period. "Monthly **churn rate** crept to 4%, so we lost nearly half our base a year." churn · noun/verb The loss of customers; also, to lose them. "Heavy discounting attracts buyers who **churn** the moment the deal ends." churned · adjective Describing a customer who has cancelled or lapsed. "**Churned** users rarely return without a genuine reason to." ## Definition in plain terms Churn rate measures how fast you are losing customers. Over a chosen window — usually a month or a year — it is the share of the customers (or the recurring revenue) you started with that is gone by the end. It is the mirror image of retention: a 4% monthly churn rate means a 96% monthly retention rate. ## The mechanics Take the customers active at the start of the period, count how many cancelled or lapsed by the end, and divide. Revenue churn weights each loss by its dollar value, so losing one big account counts more than losing several small ones. Watch the trend by cohort, because a low blended number can hide newer customers leaving fast. ## When it matters Churn is the silent tax on growth. Even a great acquisition engine cannot outrun a leaky bucket: at 5% monthly churn you replace your whole base every 20 months just to stand still. Reducing churn compounds — every retained customer keeps paying and keeps the lifetime value that justifies your acquisition spend. **Worked example.** A SaaS product starts the month with 2,000 customers and loses 80. Churn rate = 80 ÷ 2,000 = 4% monthly. Compounded, roughly 39% of customers are gone within a year. Cutting monthly churn from 4% to 2% nearly doubles average customer lifetime — a bigger lever than almost any acquisition tactic. **Failure modes to watch.** Measuring only customer churn while revenue churn tells a worse story (or a better one, if expansion offsets it); ignoring that newer cohorts churn faster; and treating all churn as voluntary when much of it is failed payments (involuntary churn) that better dunning would recover. ## Formula Churn Rate = (Customers lost during period ÷ Customers at start) × 100Revenue churn replaces customer counts with recurring-revenue amounts. Net revenue retention nets expansion against this loss. ## Benchmarks Churn varies enormously by model and contract length, so compare against your own segment and cohort, not a universal figure. B2B SaaS — annual customer churn ~5–7% is often cited as healthy B2B SaaS — monthly churn Strong is well under ~1%/month Consumer subscription Typically higher; varies sharply by category Calculators [Churn rate calculator →](/tools/churn-rate-calculator/) Ranges are illustrative; every published figure is cited from a named public source or labelled “RGM analysis.” ## Synonyms & antonyms ### Synonyms customer churnattrition ratedefection ratelogo churn ### Antonyms retentionretention rateloyalty ## Origin & history "Churn" comes from Old English *cyrin*, a vessel for churning butter — vigorous repeated agitation. The sense of customers cycling in and out of a business borrows that image of constant turnover, and became a standard subscription-economy metric as recurring-revenue models spread. Etymology: [Online Etymology Dictionary](https://www.etymonline.com/word/churn). ## 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=churn%20rate&date=today%205-y) ## Common questions Is churn rate the opposite of retention? : Yes — churn is the share of customers lost; retention is the share kept. They sum to 100% for the same period. What is a good churn rate? : It depends on model and contract length; lower is better, and many B2B SaaS firms target well under ~1% monthly. Compare to your own segment. What is the difference between customer churn and revenue churn? : Customer churn counts lost accounts; revenue churn weights losses by dollar value, so one large cancellation outweighs several small ones. ## Related tools & calculators - calculator[Churn rate calculator](/tools/churn-rate-calculator/) - calculator[Net revenue retention calculator](/tools/net-revenue-retention-calculator/) - calculator[Lifetime value calculator](/tools/ltv-calculator/) — what churn costs you ## Resources & people to follow - book*Lean Analytics* — Croll & Yoskovitz (churn as a core SaaS metric) - thought leaderLincoln Murphy — customer success & churn reduction - thought leaderPatrick Campbell — pricing & retention research Curated, non-competitor resources verified per term. ## Related training - module[Subscription growth](/training/subscription-growth/) — reducing churn - module[Email & lifecycle marketing](/training/email-lifecycle-marketing/) - module[Marketing analytics](/training/marketing-analytics/) ## Disciplines Areas of marketing where churn rate is a core concern: [Lifecycle marketing](/training/email-lifecycle-marketing/)[Subscription & SaaS](/training/subscription-growth/)[Growth marketing](/training/growth-marketing-foundations/)[Marketing analytics](/training/marketing-analytics/) ## Read next ## Related terms [Retention](/glossary/retention/)[Retention rate](/glossary/retention-rate/)[Net revenue retention](/glossary/net-revenue-retention/)[Lifetime value](/glossary/lifetime-value/)[Cohort analysis](/glossary/cohort-analysis/) ## Sources 1. trends[Google Trends — "churn rate"](https://trends.google.com/trends/explore?q=churn%20rate&date=today%205-y) 2. etymology[Online Etymology Dictionary — "churn"](https://www.etymonline.com/word/churn)