Churn Rate
Customer GrowthChurn rate measures how much of the customer base, or how much recurring revenue, leaves in a given period. For subscription businesses, it is the metric that decides whether growth is real or whether the company is filling a leaky bucket faster than it drains.
It also has more variants than any other SaaS metric. Logo churn, revenue churn, gross churn, net churn, monthly versus annual, voluntary versus involuntary. Each tells a different story, and reporting one without naming which is the most common cause of a number that fails to reconcile across teams.
Contents
Key takeaways
- Churn Rate = (Customers Lost in Period ÷ Customers at Start of Period) × 100. Healthy B2B SaaS sits at 5 to 7% annual gross logo churn; under 5% is strong.
- Customer churn (logo churn) and revenue churn move differently. Losing many small accounts may produce high logo churn but low revenue churn, and vice versa.
- Net revenue churn can be negative when expansion in the existing base outweighs churn. Best-in-class SaaS posts net revenue retention of 110 to 130%.
What is churn rate?
Churn rate is the percentage of a base lost in a defined period. The base can be customers, accounts, seats, or recurring revenue. The period is usually monthly, quarterly, or annual.
The four most-quoted variants:
- Gross logo churn: percentage of customers lost.
- Gross revenue churn: percentage of recurring revenue lost from churned customers and downgrades, before counting expansion.
- Net revenue churn: gross revenue churn minus expansion revenue from the existing base. Can be negative (good) when expansion outweighs losses.
- Net dollar retention (NDR), the inverse view: 100% minus net revenue churn. Best-in-class SaaS posts NDR of 110 to 130%.
Name the variant every time you report a churn number. "6% churn" without specifying the variant is meaningless.
How do you calculate churn rate?
The standard formula:
Churn Rate = (Customers Lost in Period ÷ Customers at Start of Period) × 100
Worked example: a B2B SaaS company starts the quarter with 800 customers. Over the quarter, 32 customers cancel and 4 new customers from the period also cancel. Quarterly churn = 32 ÷ 800 × 100 = 4%. (The 4 new-then-cancelled customers are not included in the denominator because they were not in the starting base.)
For revenue churn, replace customer counts with MRR or ARR figures:
Gross Revenue Churn = (Revenue Lost from Churn and Contraction ÷ Starting Revenue) × 100
Net Revenue Churn = ((Revenue Lost − Expansion from Existing) ÷ Starting Revenue) × 100
A company can have 8% gross logo churn and 2% gross revenue churn if the customers leaving are mostly small accounts, or the inverse if a few large customers cancel.
What is a good churn rate?
Benchmarks vary by segment:
- B2B SaaS, SMB segment: 3 to 7% monthly logo churn is typical, under 3% is strong, under 1% is exceptional.
- B2B SaaS, mid-market: 1 to 2% monthly is typical, under 1% is strong.
- B2B SaaS, enterprise: 6 to 10% annual is typical, under 6% is strong, under 4% is best-in-class.
- Net revenue retention: 100% is the floor for venture-backed SaaS, 110% is healthy, 120%+ is best-in-class.
The single most important comparison is segment, not industry. Mixing SMB and enterprise churn into a single number averages two very different problems and obscures both.
How do you reduce churn rate?
Most preventable churn is decided in onboarding. Customers who reach a defined activation milestone in their first 30 days churn at one-third to one-half the rate of customers who do not.
Four interventions, in order of impact:
- 1.Tighten onboarding. Define one activation event that correlates with retention and instrument it. Trigger nudges and human outreach for accounts that miss it.
- 2.Identify at-risk accounts early. Usage drops, support-ticket spikes, and missed renewal-conversation milestones are the strongest leading indicators.
- 3.Build expansion paths. Net revenue churn often improves faster through expansion than through fewer cancellations. Seats, modules, and usage tiers all create headroom.
- 4.Run win-back. A structured re-engagement motion for recently churned accounts typically recovers 5 to 15% within 90 days, often at favourable terms.
The trap to avoid: treating every churn case the same. Voluntary churn (the customer chose to leave) and involuntary churn (failed payment, expired card) require different fixes. Involuntary churn alone often accounts for 20 to 40% of total churn and is fixable with payment-recovery tooling.
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Frequently asked questions
What's the difference between gross churn and net churn?
Gross churn counts revenue or customers lost. Net churn subtracts expansion revenue from the existing base. Net churn can be negative (good) when expansion in current customers outweighs cancellations and downgrades, which is the hallmark of best-in-class SaaS retention.
Should I report churn monthly or annually?
Both, for different audiences. Monthly churn is operational; it surfaces problems quickly and supports tight feedback loops on retention work. Annual churn is the comparable figure for board reports and investor conversations. Convert between them carefully: annual churn is not 12× monthly churn because of compounding.
What counts as a churned customer?
The standard definition is a customer whose subscription has ended in the reporting period and is not renewed. Companies that auto-pause subscriptions, allow long grace periods, or run trial-to-paid motions need an explicit policy on when a paused or non-paying account is counted as churned. Be consistent quarter to quarter.