Churn rate is the percentage of customers who cancel or don’t renew their subscription in a given period. It tells you how fast you’re losing the customers you already have.
For subscription-based businesses, SaaS tools, membership sites, recurring service subscriptions, churn rate is one of the most consequential metrics you can track. A high churn rate means you’re running on a treadmill: constantly acquiring new customers to replace the ones you’re losing.
Key takeaways
- Churn rate = customers lost in a period ÷ customers at the start of that period × 100
- Monthly and annual churn rates describe very different retention situations, be clear which you’re reporting
- Even a “small” monthly churn rate (3%) compounds into losing a third of your customer base annually
- Churn is a lagging indicator, by the time it shows up in the data, the problem happened weeks ago
- Revenue churn (how much MRR you lost) often matters more than customer churn (how many accounts you lost)
How churn rate is calculated
The standard formula:
Churn rate = (customers lost in period ÷ customers at start of period) × 100
Example: you started the month with 400 subscribers. 16 cancelled before the end of the month. Monthly churn rate = 16 ÷ 400 × 100 = 4%.
What “lost” means matters here. It should count:
- Customers who actively cancelled
- Subscriptions that failed to renew (failed payment, expired card)
- Accounts that were closed or deactivated
It should not count:
- Customers who downgraded to a lower tier (that’s downsell, not churn, unless they moved to zero)
- Customers on a free trial who didn’t convert (that’s a different metric)
Monthly vs annual churn rate
Most subscription businesses track monthly churn but report to investors using annual figures. The relationship matters because small monthly rates compound significantly:
| Monthly churn rate | Annual customer retention |
|---|---|
| 1% | ~89% |
| 2% | ~79% |
| 3% | ~70% |
| 5% | ~54% |
A 3% monthly churn rate sounds manageable. Annually, it means you’re retaining 70% of customers, losing nearly one in three every year. If it costs you €200 to acquire a customer and your average subscription is €40/month, losing one-third of your base each year means your acquisition budget is essentially running to stand still.
Customer churn vs revenue churn
These two are related but not the same, and the difference is important.
Customer churn rate counts the number of accounts that left.
Revenue churn rate (sometimes called MRR churn) measures how much monthly recurring revenue was lost.
Revenue churn = (MRR lost to cancellations ÷ starting MRR) × 100
These diverge when your customers are on different pricing tiers. Losing 5 customers on a basic plan and gaining 2 on an enterprise plan means your customer count went down but your revenue might be fine. Conversely, if your highest-value accounts are churning, your revenue churn will be worse than your customer churn suggests.
For growth-stage businesses, expansion revenue (upgrades, upsells) can offset churn and produce negative net revenue churn, which means you’re growing revenue even while losing some customers. That’s a strong signal of product-market fit.
What causes churn
The reasons customers leave usually fall into a few categories:
Didn’t get value. The most common cause. The customer signed up expecting an outcome, didn’t reach it (often due to poor onboarding or not using the product properly) and cancelled. This is often described as a product or value problem but is frequently an activation problem, the customer never got to the “aha moment.”
Product doesn’t fit their evolving needs. A customer who outgrew the product (or whose business shrank below needing it) isn’t a failure case, it’s a fit issue. Worth understanding but not always fixable.
Price sensitivity. Often a proxy for poor perceived value rather than absolute cost. A customer who cancels because it’s “too expensive” is usually saying the cost isn’t justified by the benefit they’re experiencing.
Competition. A customer found an alternative that fits better or costs less.
Involuntary churn. Failed payments, expired credit cards and bank declines. This can represent 20, 30% of total churn for subscription businesses and is entirely recoverable with automated dunning emails and payment retry logic.
How to reduce churn
The most effective churn reduction strategies work earlier in the customer journey than most businesses focus:
Improve onboarding. Customers who reach the core value of your product quickly are dramatically less likely to churn. Identify the action or milestone that correlates with long-term retention (the “activation event”) and build your onboarding around getting every customer there.
Monitor usage and intervene early. Customers who stop logging in or using key features are at risk weeks before they cancel. If you can identify the drop in engagement early, proactive outreach (in-app message, email, a support check-in) can recover them.
Dunning for involuntary churn. Automated failed payment sequences, a series of retry attempts and notification emails, can recover 40, 60% of customers who churned due to payment failure rather than active cancellation.
Exit surveys. When customers cancel, ask why. Even a 20% response rate generates enough qualitative data to identify patterns. If 40% of cancellers mention the same feature gap, that’s a product signal worth acting on.
Pricing and tier fit. Some churn happens because customers are on the wrong plan, either paying for features they don’t use (and noticing the mismatch) or hitting limits that frustrate them. Proactive tier recommendations based on usage reduce both types.
Tracking churn in WooCommerce subscription businesses
For WooCommerce stores running subscription products (via WooCommerce Subscriptions or Easy Digital Downloads), churn rate is typically calculated from subscription cancellation events.
Burst Pro’s subscription analytics tracks active subscriptions, cancellations and renewal behaviour over time. You can see churn rate alongside MRR, customer lifetime value and active subscriber count, all inside WordPress, without sending your customer data to a third-party platform.
FAQs
It varies by business model and pricing. Generally:
– Monthly churn under 2% is considered healthy for most B2C subscriptions.
– 1% or below is healthy for B2B.
– Above 5% monthly is a significant concern in most categories.
These are rough guides. What matters more is whether your churn is improving or worsening over time and what’s causing it.
They’re inverses. If your monthly churn rate is 4%, your monthly retention rate is 96%. Retention rate measures how many customers stayed; churn rate measures how many left. Some businesses prefer reporting retention because it emphasises the positive. Both describe the same underlying behaviour.
Yes. Negative net revenue churn happens when expansion revenue from existing customers (upgrades, additional seats, usage increases) exceeds the revenue lost to cancellations. If you lost €500 in MRR to churn but gained €700 in upgrades from existing customers, your net revenue churn is -€200. This is a strong indicator of healthy product-market fit.
Most do. Research consistently shows that only a small fraction of churning customers ever contact support. The rest simply cancel, often having given up on getting value or finding a solution to their problem. This is why proactive engagement (monitoring usage, checking in before renewal) is more effective than reactive support.
Understand why customers are leaving
Churn rate tells you how fast you’re losing subscribers. Burst Pro’s subscription analytics shows churn alongside MRR, retention and lifetime value, all inside WordPress.
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Related definitions: what is MRR, what is customer lifetime value and what is average order value.
