Free Churn Rate Calculator
Your Churn Metrics
How to Calculate Churn Rate
Churn rate measures the percentage of customers or revenue you lose over a given period. It is one of the most critical metrics for any subscription or SaaS business because it directly determines your growth ceiling. Even with strong acquisition, high churn will prevent sustainable growth.
To calculate customer churn rate, take the number of customers who cancelled during the period and divide it by the total number of customers at the start of that period. Multiply the result by 100 to express it as a percentage. For example, if you began the month with 400 customers and 12 cancelled, your monthly churn rate is (12 / 400) x 100 = 3.00%.
Revenue churn works the same way but uses dollar amounts instead of headcounts. This is often more useful because it accounts for the fact that not all customers are equal. Losing one enterprise customer paying $2,000/month hurts far more than losing five customers on a $10/month plan.
Your churn rate also determines your average customer lifetime. If your monthly churn is 5%, the average customer stays for 1 / 0.05 = 20 months. This number feeds directly into your Customer Lifetime Value (LTV) calculation, which determines how much you can afford to spend acquiring each customer.
Tracking churn over time reveals whether product improvements, pricing changes, and support investments are working. Most successful SaaS companies monitor churn weekly and segment it by plan tier, cohort, and acquisition channel to identify specific areas for improvement.
Churn Rate Formula
The standard churn rate formula is straightforward:
Customer Churn Rate = (Customers Lost / Customers at Start) x 100
For revenue churn:
Revenue Churn Rate = (MRR Lost / MRR at Start) x 100
To convert between periods:
- Monthly to Annual: Annual Churn = 1 - (1 - Monthly Churn)^12
- Quarterly to Annual: Annual Churn = 1 - (1 - Quarterly Churn)^4
- Annual to Monthly: Monthly Churn = 1 - (1 - Annual Churn)^(1/12)
Average customer lifetime in months is the inverse of monthly churn:
Average Lifetime = 1 / Monthly Churn Rate
SaaS Churn Benchmarks
Based on data from 800+ verified startups on ShowMRR, here are the churn rate benchmarks you should target:
| Rating | Monthly Churn | Annual Churn | Notes |
|---|---|---|---|
| Excellent | < 1% | < 12% | Best-in-class; strong product-market fit |
| Good | 1% - 3% | 12% - 31% | Healthy for most SaaS businesses |
| Acceptable | 3% - 5% | 31% - 46% | Common for SMB-focused products |
| High | > 5% | > 46% | Urgent action needed; growth is unsustainable |
Enterprise SaaS companies typically see lower churn (under 1% monthly) due to longer contracts and higher switching costs. SMB-focused products naturally run higher, but anything above 5% monthly should be treated as a critical issue.
See churn benchmarks from verified startups →Frequently Asked Questions
What is a good churn rate for SaaS?
A good monthly churn rate for SaaS companies is below 3%. Best-in-class SaaS businesses achieve under 1% monthly churn. Annual churn below 5-7% is considered excellent for enterprise SaaS, while SMB-focused products typically see higher churn around 3-5% monthly.
How do you calculate churn rate?
Churn rate is calculated by dividing the number of customers lost during a period by the number of customers at the start of that period, then multiplying by 100. For example, if you started with 200 customers and lost 10, your churn rate is (10 / 200) x 100 = 5%.
What is the difference between customer churn and revenue churn?
Customer churn measures the percentage of customers who cancel, while revenue churn (also called MRR churn) measures the percentage of recurring revenue lost. Revenue churn is often more important because losing a high-paying customer impacts your business more than losing a low-paying one.
How do you reduce churn rate?
Key strategies to reduce churn include improving onboarding, providing proactive customer support, building features customers request, implementing dunning management for failed payments, offering annual plans with discounts, and monitoring engagement metrics to identify at-risk customers early.
What is net revenue churn?
Net revenue churn accounts for both lost revenue from churned customers and expansion revenue from existing customers (upgrades, add-ons). If expansion revenue exceeds churned revenue, you achieve negative net churn, which means your existing customer base is growing in value over time.
How does churn rate relate to customer lifetime?
Average customer lifetime is the inverse of your churn rate. If your monthly churn rate is 5%, your average customer lifetime is 1 / 0.05 = 20 months. This metric is crucial for calculating Customer Lifetime Value (LTV) and determining how much you can spend on acquisition.