Finance

Customer Retention Rate Calculator

Measure how well you retain customers and the financial impact of improving retention.

Customers at Start (S)

Customers at End (E)

New Customers Acquired (N)

Avg Revenue/Customer ($/mo)

Formula:
Retention Rate = [(E − N) / S] × 100
Churn Rate = 100% − Retention Rate
Lost Customers = S − (E − N)

Why Retention Matters

Acquiring a new customer costs 5-25x more than retaining an existing one. A 5% increase in retention can increase profits by 25-95% (Harvard Business Review).

Retention Benchmarks

Industry	Avg Retention
Media/Streaming	84%
SaaS	85-90%
Banking	75-89%
Retail	63%
Hospitality	55%