What is the difference between churn rate and retention rate, and why do both matter?

What is the difference between churn rate and retention rate, and why do both matter?

• A. Churn is percentage customers lost; retention is percentage kept; both indicate product-market fit and revenue stability.
• B. Churn is revenue, retention is customers.
• C. Churn measures growth, retention measures marketing spend.
• D. Churn and retention are the same.

Answer: (A)

Churn rate and retention rate focus on how well you keep customers over time. Churn rate is the percentage of customers you lose in a given period, while retention rate is the percentage you keep during that period (the complement of churn when using the same base). These metrics matter together because they show revenue stability and how well your product meets customer needs. High retention with low churn indicates strong product-market fit and predictable revenue, whereas high churn or low retention signals problems that can erode lifetime value and cash flow. The two are closely related—retention is essentially what you keep, churn is what you lose, and they help you target efforts to reduce cancellations and strengthen core relationships with customers. The other statements misstate what churn and retention measure—for example, churn isn’t revenue and retention isn’t just about marketing spend. They are not the same thing; they describe different aspects of keeping customers.

Churn rate and retention rate focus on how well you keep customers over time. Churn rate is the percentage of customers you lose in a given period, while retention rate is the percentage you keep during that period (the complement of churn when using the same base).

These metrics matter together because they show revenue stability and how well your product meets customer needs. High retention with low churn indicates strong product-market fit and predictable revenue, whereas high churn or low retention signals problems that can erode lifetime value and cash flow. The two are closely related—retention is essentially what you keep, churn is what you lose, and they help you target efforts to reduce cancellations and strengthen core relationships with customers.

The other statements misstate what churn and retention measure—for example, churn isn’t revenue and retention isn’t just about marketing spend. They are not the same thing; they describe different aspects of keeping customers.