Retention & Churn

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Churn Rate

Churn rate is the percentage of customers lost over a period. Monthly churn rate equals customers lost divided by customers at start of month. For enterprise SaaS, below 1% monthly is excellent. For SMB SaaS, below 3% is healthy. Reducing churn from 5% to 2% monthly increases customer lifetime value by 150%.

Why Churn Rate Matters

Churn is the silent killer of recurring revenue businesses. At 5% monthly churn, you lose 46% of your customers in a year. At 3%, you lose 31%. At 1%, only 11%. This means a 2-percentage-point improvement in monthly churn can nearly double your annual retention. Churn also directly determines LTV: a customer with 5% monthly churn has an expected lifetime of 20 months; at 2%, it's 50 months. Every improvement in churn multiplies the return on every acquisition dollar you've ever spent.

How to Calculate Churn Rate

Divide the number of customers (or MRR) lost during a period by the number at the start of that period. Monthly churn rate is most common. For annual churn, use the same formula over a 12-month window.

Churn Rate Formula

Monthly Churn Rate = Customers Lost in Month ÷ Customers at Start of Month × 100%

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Industry Benchmarks

Segment	Good	Average	Poor
Enterprise SaaS	<1%/mo	1–2%/mo	>2%/mo
SMB SaaS	<3%/mo	3–5%/mo	>5%/mo
Consumer Subscription	<5%/mo	5–8%/mo	>8%/mo
Mobile App	<6%/mo	6–10%/mo	>10%/mo

Expert Tips

Distinguish voluntary churn (cancellations) from involuntary churn (failed payments). Involuntary churn is often 20-40% of total churn and can be reduced with dunning emails and payment retry logic.

Cohort-based churn analysis reveals whether your product is improving. If newer cohorts churn less than older ones, your retention strategy is working.

Revenue churn (MRR lost) is more important than logo churn (customers lost). Losing 10 small customers is less damaging than losing 1 enterprise account.

Always analyze churn by segment, plan tier, and tenure. Month-1 churn is typically 2-3x higher than month-6+ churn — focus onboarding improvements where the drop-off is steepest.

Frequently Asked Questions

What is churn rate?

Churn rate is the percentage of customers or revenue lost over a period, typically measured monthly. A 5% monthly churn rate means you lose 5 out of every 100 customers each month. It's the inverse of retention and the primary health metric for subscription businesses.

What is a good churn rate for SaaS?

For enterprise SaaS, monthly churn below 1% is excellent. For SMB SaaS, below 3% is healthy. For consumer subscriptions, below 5% is good. Annual churn rates of 5-7% are considered world-class for B2B SaaS.

How does churn rate affect LTV?

LTV equals ARPU divided by churn rate. So a customer with $50 ARPU and 5% monthly churn has an LTV of $1,000. Reducing churn to 2% increases LTV to $2,500 — a 150% improvement from a 3-percentage-point churn reduction.

What causes high churn?

Common causes include poor onboarding, lack of product-market fit, pricing misalignment, missing features, poor customer support, and competitive alternatives. Analyzing churn by cohort, segment, and tenure helps identify the root cause.

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