Why does Churn matter?
Churn sets the ceiling on how large the business can get. At a steady churn rate, growth eventually stalls at the point where new customers only replace departing ones, regardless of how good acquisition is. It also invalidates lifetime value: an LTV computed from an optimistic lifetime is a number that flatters a business which is quietly leaking. And churn is diagnostic — it usually says the product solved a less urgent problem than the sales conversation implied.
What does Churn look like in practice?
Losing 5% of customers monthly means an average customer life of about twenty months, and it means acquisition has to run hard just to stay level. Logo and revenue churn can also diverge instructively: losing many small accounts while retaining large ones is a very different business from the reverse, and a single blended number hides which one you are.
What are the common mistakes with Churn?
- Tracking only logo churn and missing that revenue is concentrating in a few fragile accounts.
- Averaging across segments, which hides that one segment is fine and another is bleeding.
- Treating churn as a retention-campaign problem when it is a product-fit problem.
- Not asking departing customers why. It is the cheapest research available and the most avoided.
Related concepts
- Cohort RetentionThe share of a group of users who started at the same time and are still active after a given period — measured per group rather than across the whole user base.
- Lifetime Value (LTV)The total gross profit you expect from a customer across their whole relationship with you — a projection, not a measurement.
- Product-Market FitThe point at which a product satisfies a real need for a specific market well enough that demand begins to pull the company along rather than the company pushing the product.