How Does CS Reduce Churn and Increase Renewals?
Churn and renewals explained with the leaky-bucket model, and how CSMs listen to customers to reduce churn. For startups deciding on a CS team.
The short version
TLDRChurn and renewals are two sides of one coin. New sales fill the revenue bucket and churn drains it. CSMs reduce churn by helping customers get the value they bought for.
First published 2022. Second edition 2026.
5 topics in 7 pages
- The leaky-bucket model of revenue, churn and renewals
- Why high churn means new sales first replace lost revenue
- How Customer Success Managers listen to customers
- Four ways CS reduces churn
- When a startup does not need a CS team yet
5 ideas you can use this week
Churn has a precise meaning
Churn is the number of existing customers on a renewable contract who chose not to renew.
High churn delays growth
When churn is high, revenue from new customers first has to replace revenue lost from existing ones before the business grows.
Value realization is the job
CSMs help customers reach their own definition of success: they ask questions, communicate and plan so customers get the value they expected.
Four levers against churn
Spot and prevent churn situations, link customers to the right team, build tailored CS strategies for value realization, and smooth the customer journey.
Not every startup needs CS yet
Simple products, simple challenges and experienced customers may not need a CS team. Complex products usually do.
Questions
Related resources
Selecting the Right Training Strategy for Customer Success Management
Nine questions a CS leader should answer before buying or building training, from desired outcomes and gap analysis to ROI and implementation.
The Practical CSM Framework: Practitioner’s Guide
A walkthrough of the seven-phase Practical CSM Framework for individual CSMs, from Preparation to Engagement Evaluation. Each phase covers purpose, activities and outputs.
The Practical CSM Framework: Manager’s Overview
The full Framework explained for CS leaders and business managers: what CSM is, how the Framework fits the company and how CS relates to CX. Foreword by Peter Armaly.
Get certified on the Framework
The CCSMP certification (Certified CSM Professional) is built on the Practical CSM Framework: five levels in three packages, for individuals and teams.