Default 0.5 Churn Threshold Costs SaaS $86 per Customer, $8.6M per 100k
A study of 36 IBM Telco churn analyses shows the common 0.5 classification cut‑off wastes about $86 for every subscriber, or $8.6 million on a 100 k customer base. Missing a churner is roughly 13 × costlier than over‑treating a loyal user, meaning the default threshold is a costly pricing mis‑decision.