Metric Definition
Subscriber attrition percentage
Track from
Customer churn rate
Customer churn rate is the percentage of subscribers who cancel their subscriptions within a given period. It is one of the most important health indicators for any subscription business because even modest churn compounds quickly, requiring ever-larger acquisition volumes just to maintain flat revenue.
5 min read
What is customer churn rate?
Customer churn rate measures the proportion of your subscriber base that leaves during a defined period. It is the inverse of retention rate and one of the most scrutinised metrics in subscription businesses.
Churn compounds. A business with 5% monthly churn loses nearly half its subscriber base every year if it does not replace them. This compounding effect means that reducing churn from 5% to 4% has a larger long-term impact on revenue than increasing new subscriber acquisition by the same amount.
Customer churn rate differs from revenue churn rate because it counts logos (customers) rather than pounds. Losing ten small accounts has the same customer churn impact as losing one enterprise account, but very different revenue consequences. Both metrics should be tracked together to get the full picture of attrition.
How to calculate customer churn rate
Customer Churn Rate = (Churned Customers / Customers at Start of Period) x 100
For example, if a business starts the month with 2,000 subscribers and 80 cancel, the monthly customer churn rate is 4%.
Segment churn into voluntary (customer chose to cancel) and involuntary (payment failed and was not recovered). Involuntary churn can account for 20 to 40% of total churn and is addressable through dunning campaigns and payment recovery without any product changes.
How to reduce customer churn
- 1
Identify and fix the leading churn drivers
Analyse cancellation reasons by volume and segment. If the top reason is "too expensive", investigate whether a lower-tier plan or annual discount would retain those customers. If it is "not using it enough", focus on activation and engagement.
- 2
Recover failed payments before they become churn
Implement smart retry logic, pre-dunning notifications, and card updater services. Reducing failed payment rate is one of the fastest ways to cut involuntary churn.
- 3
Deploy proactive outreach to at-risk subscribers
Build health scores from usage data and trigger outreach from customer success when engagement drops below a threshold. Early intervention prevents cancellations that seem sudden but were predictable from declining usage patterns.
Related metrics
Revenue Churn Rate
SaaS Metrics
Metric Definition
Revenue Churn Rate = (MRR Lost to Cancellations + MRR Lost to Downgrades) / MRR at Start of Period x 100
Revenue churn rate measures the percentage of recurring revenue lost from existing customers during a given period due to cancellations and downgrades. It captures the financial impact of customer losses in a way that simple logo churn cannot, because not all customers contribute equally to revenue.
Net Revenue Retention
NRR
SaaS MetricsMetric Definition
NRR = ((Beginning MRR + Expansion MRR - Contraction MRR - Churned MRR) / Beginning MRR) x 100
Net revenue retention (NRR) measures the percentage of recurring revenue retained from existing customers over a given period, including expansion, contraction, and churn. An NRR above 100% means existing customers are generating more revenue over time, creating a compounding growth engine that does not depend on new acquisition.
Customer Lifetime Value
CLV / LTV
SaaS Metrics
Metric Definition
CLV = Average Revenue Per User × Gross Margin × Average Customer Lifespan
Customer lifetime value (CLV) is the total revenue a business can expect from a single customer account over the entire duration of their relationship. It quantifies the long-term financial worth of acquiring and retaining a customer, making it one of the most important metrics for sustainable growth.
Decompose churn into actionable drivers
Build a metric tree that breaks customer churn into voluntary and involuntary components, links each to root causes, and assigns ownership so the right team tackles the right lever.
