Churn in Practice

Calculating Churn Rate

Churn rate = (Lost customers in period / Customers at start of period) × 100%

Example: 50 customers cancel out of 500 at the start of the quarter. Quarterly churn = 10%.

In B2B, churn is rarely dramatic. The customer does not ring up to say goodbye. They simply let the contract lapse. Consequently, that is why B2B churn requires a proactive early warning system with NPS and Health Score as leading indicators.

Monthly vs. Annual Churn

Be mindful of whether churn is reported monthly or annually, it yields very different numbers. A monthly churn of 5% equates to an annual churn of ~46% (not 60%) due to the compounding effect.

Voluntary vs. Involuntary Churn

Voluntary churn occurs when the customer actively chooses to leave. It is typically driven by dissatisfaction, competitor offers, or changing needs.

Involuntary churn occurs without an active decision, e.g., due to card processing failures, forgotten subscriptions, or contract expiration without renewal. Fortunately, involuntary churn can be significantly reduced with automatic payment retry and proactive renewal reminders.

Early Churn Signals

• Declining login frequency or product usage
• Low NPS or CSAT scores
• Increased number of support inquiries about basic features
• Lack of participation in QBRs (Quarterly Business Reviews), B2B
• Cancellation of add-on services or plan downgrades

Churn and Customer Lifetime Value

Churn and CLV are closely linked: Halving the churn rate theoretically doubles the average customer lifespan and therefore CLV. In practice, the relationship is not linear, but the connection is strong enough to make retention one of the best investments in a subscription business. Therefore, reducing churn should be a top priority.