The SaaS Churn Rate Formula: 3 Calculations That Expose Your Real Runway Risk

Short summary

SaaS founders need three distinct churn metrics: logo churn hides losses of high-value accounts, while gross MRR churn reveals true revenue bleeding. Net-negative churn—where expansion revenue exceeds losses—becomes a growth multiplier. A 2% vs 5% monthly churn difference creates a $3,115 monthly cash gap by year one.

• •Logo churn treats all customers equally and misses high-value account losses
• •Gross MRR churn exposes true revenue bleeding from cancellations and downgrades
• •Net-negative churn turns retention into a 3-5× growth engine for bootstrapped SaaS

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