Churn
Also known as: customer attrition, user attrition, customer turnover
What is Churn?
Churn is the rate at which users or customers stop using a product or service over a defined period. For subscription-based products and SaaS companies, it's one of the most closely watched metrics on the dashboard.
How is the Churn Rate Calculated?
Churn rate = (Customers lost ÷ Total customers at start of period) × 100
Say you started the month with 500 active users and 40 cancelled before it ended. That's an 8% monthly churn rate. Teams track this monthly, quarterly, or annually, depending on their business model, and the chosen timeframe can meaningfully shift what the numbers suggest.
❗Important: the starting point for the count changes the output. Calculating from the beginning of a period versus the end produces different rates, even with identical raw data.
What Causes Churn?
Users rarely leave for a single, clean reason. Common causes include:
The product no longer solves their problem.
A confusing or incomplete onboarding experience that never showed them its value.
Navigation that feels unintuitive, or workflows that take too many steps.
A competitor offering something easier, cheaper, or better-suited to their needs.
Payment failures that pull users out without any conscious decision on their part.
That last category gets its own name: involuntary churn.
What's the Difference Between Voluntary and Involuntary Churn?
Voluntary churn is a deliberate choice to leave: canceling a subscription, disengaging, or switching to an alternative. This type usually reflects dissatisfaction with product value, pricing, or experience.
Involuntary churn describes departures with no intent behind them. Failed credit card payments are the most common trigger. Because the user had no intention of leaving, recovery rates tend to be higher. A well-timed retry or dunning email can be enough to bring them back.
How Does UX Design Affect Churn?
Quite directly. Poor onboarding, cluttered navigation, and friction at critical points all push people toward the exit before they've built any real connection to the product.
In B2B, the stakes are higher. A user who leaves takes their whole team with them, and churn at that scale hits revenue fast. Designing sales software is one of the clearer examples of where this plays out: reps need to move quickly, pipelines need to be readable at a glance, and any extra step in a workflow becomes a reason to reach for a competitor.
Good UX removes the friction that accelerates departure. It can't stop every user from leaving, but it buys the product time to prove its value before they decide to go.