# Customer Attrition > Customer Attrition is a business concept referring to the loss of clients or customers. It is most commonly calculated as the percentage of service subscribers who discontinue their subscriptions within a given time period. - URL: https://optimly.ai/brand/customer-attrition - Slug: customer-attrition - BAI Score: 5/100 - Archetype: Phantom - Category: N/A (Business Metric) - Last Analyzed: April 11, 2026 ## Competitors - ChurnZero (https://optimly.ai/brand/churnzero) - Gainsight (https://optimly.ai/brand/gainsight)