Subscription Churn Calculator
Inputs
Results update live| Cohort Metric | Calculation Formula | Value |
|---|---|---|
| Customer Logo Churn | Churned / Starting Accounts | 3.5% |
| Gross Revenue Churn | Churned MRR / Starting MRR | 8.2% |
| Net Revenue Retention (NRR) | (Start - Churn + Expansion) / Start | 95.4% |
| Ending Customer Count | Start - Churned + New | 1,025 accounts |
Cite this calculator
Results use the inputs you enter and standard formulas documented on this page. Not professional advice.
Last reviewed: August 2026
Subscription Churn Calculator. (August 2026). Useful Tools Online. https://usefultoolsonline.com/subscription-churn-calculator/
Interpretation
Why Logo Churn and Revenue Churn Diverge
A SaaS business can lose 5% of its lower-tier customer accounts while retaining 98% of its revenue if enterprise customers remain sticky. Tracking Net Revenue Retention (NRR) alongside logo churn ensures you understand both unit retention and revenue compounding.
Example
SaaS Cohort Analysis
A realistic scenario showing how the calculation guides a practical decision.
A SaaS platform starts with 1,000 customers and $50,000 MRR. In one month, 35 accounts cancel ($3,200 lost MRR) while existing customers upgrade by $1,800 MRR and 60 new customers join ($7,200 MRR).
97.2%
$54,900 (+$4,900 Net Gain)
Watch out
Common mistakes
- Failing to separate logo churn from dollar-weighted revenue churn.
- Ignoring contract upgrade expansions when measuring baseline cohort health.
- Averaging annual churn linearly instead of compounding monthly rates.
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FAQ
Frequently asked questions
How the calculation works and where its limits are.
What is the difference between logo churn and revenue churn?
Logo churn (customer churn) measures the percentage of total accounts that cancel in a period (Churned Customers / Starting Customers). Revenue churn measures the percentage of Monthly Recurring Revenue (MRR) lost from cancellations and downgrades, regardless of total customer count.
What is a healthy Net Revenue Retention (NRR) rate for SaaS?
Top-tier enterprise SaaS companies target >115% to 130% NRR, meaning expansion from existing customers outpaces lost churn. SMB-focused SaaS typically aims for >95% to 105% NRR.
How do I calculate average customer lifespan from monthly churn?
Average customer lifespan in months equals 1 divided by monthly customer churn rate (1 / Logo Churn). For example, a 2.5% monthly churn rate yields an average customer lifetime of 40 months (3.3 years).
Is this churn calculation financial advice?
No. All metrics are deterministic unit economics models based on standard subscription accounting definitions. Consult your CFO or advisory board for formal investor reporting.
What steps should I take if revenue churn exceeds 5% monthly?
Audit cohort onboarding completion, implement proactive product health score triggers, evaluate pricing tier value alignment, and strengthen customer success touchpoints during the first 90 days.