Customer churn silently destroys ARR. At 2% monthly churn, you lose nearly 22% of your revenue base every year. This calculator shows the revenue you are losing to churn now vs what you retain with an improved rate — and the LTV impact of reducing churn.
Business Metrics
12-Month ARR at Different Churn Rates
| Month | At Current Churn | At Target Churn | ARR Saved |
|---|
How to Use the Churn Revenue Impact Calculator
Churn is the silent killer of SaaS growth. This calculator quantifies exactly how much revenue you lose to churn annually and shows the compounding value of reducing it — helping you justify investment in customer success.
Step 1: Enter Current ARR and Churn Rate
Enter your current Annual Recurring Revenue and monthly churn rate. Find monthly churn rate by dividing the MRR lost to cancellations in a month by your starting MRR for that month. If you lost $5,000 MRR to churn from a $250,000 MRR base, your monthly churn is 2%.
Step 2: Set Your Target Churn Rate
Enter your target monthly churn rate. For most SaaS companies, cutting churn in half is an achievable 12–18 month goal with focused customer success investment. Going from 2% to 1% monthly churn changes your annual revenue loss from ~22% to ~11% — effectively doubling the ARR retained.
Step 3: Review the ARR Impact
The results show ARR retained by achieving your target churn rate and the LTV improvement per customer. The 12-month table shows how the ARR gap compounds over time — churn savings from month 1 are retained and compound in subsequent months. Small improvements in churn have outsized long-term value.
FAQ
Is this churn revenue impact calculator free?
Yes, completely free with no signup required. All calculations run in your browser.
What is a good monthly churn rate for SaaS?
World-class SaaS companies target monthly churn below 0.5% (which translates to ~6% annual churn). Most established SaaS companies see 1–2% monthly churn. Early-stage companies often see 5–10% monthly churn, which is nearly impossible to overcome with new customer acquisition — you need about as many new customers as you lose just to stay flat. The general benchmark: above 2% monthly churn requires urgent attention.
How is customer LTV affected by churn?
Customer LTV = Average Monthly Revenue per Customer / Monthly Churn Rate. At 2% monthly churn, average customer lifespan is 50 months (1/0.02). If ARPU is $50/month, LTV = $2,500. At 1% churn, LTV doubles to $5,000. Halving churn doubles LTV — this is why retention investments often have better ROI than acquisition investments for mature SaaS companies.
What is the difference between logo churn and revenue churn?
Logo churn (customer churn) is the percentage of customers who cancel. Revenue churn is the percentage of MRR lost. These differ when customer sizes vary — losing 5% of small customers might only lose 2% of MRR. Net Revenue Retention (NRR) measures MRR from existing customers including expansions and contractions — NRR above 100% means expansions exceed churn, enabling growth even without new customers.