Subscription Growth Analytics

SaaS Churn & Retention Calculator

Calculate your monthly customer churn rate, revenue churn %, customer half-life, and projected MRR erosion.

Account Inputs

Monthly Logo Churn
2.50%
Logo loss rate
Monthly Retention
97.50%
100% - Churn Rate
Avg Customer Lifespan
40.0 Months
1 / Churn Rate

Revenue Impact Breakdown

Gross Lost Monthly Recurring Revenue (MRR): -$2,475 / month
Net MRR Churn Rate (Inc. Expansion): 1.69% / month
Projected 12-Month Lost Revenue: -$29,700 / year
Customer Half-Life (50% Cohort Decay): 27.4 Months

The Economics of SaaS Churn

Churn rate is the percentage of subscribers who discontinue their subcriptions within a given time period. In SaaS models, churn is the ultimate growth ceiling: even high customer acquisition rates cannot offset a high churn bucket.

Logo Churn vs. Revenue Churn

Logo churn measures the raw percentage of customer accounts lost. Revenue churn measures the net dollar amount of Monthly Recurring Revenue (MRR) lost. Negative net revenue churn occurs when upsells exceed churn loss.

Impact on Customer Lifetime Value (LTV)

Customer LTV is calculated as ARPU / Monthly Churn %. Reducing monthly churn from 5% to 2.5% doubles your customer lifetime value without changing product pricing.