Churn rate is one of the most important metrics for any subscription business. But calculating it correctly—and knowing what the numbers mean—can be confusing.
This guide walks you through exactly how to calculate churn rate, with formulas, examples, and a free calculator.
The Basic Churn Rate Formula
Churn Rate = (Customers Lost ÷ Customers at Start of Period) × 100
Example:
- January 1st: 500 customers
- Customers who canceled in January: 25
- Churn Rate: 25 ÷ 500 × 100 = 5%
That's it for the basic formula. But there's more nuance to get accurate numbers.
Step-by-Step: Calculate Customer Churn Rate
Step 1: Choose Your Time Period
Monthly (most common):
- Standard for SaaS
- Easier to track and act on
- Most benchmarks are monthly
Quarterly:
- Better for B2B with longer sales cycles
- Smooths out monthly fluctuations
Annual:
- Big picture view
- Useful for board reporting
- Can hide short-term issues
Step 2: Define Your Starting Customer Count
Use customers at the start of the period, not the end.
Include:
- All active paying customers
- Customers on annual plans (count them)
- Free trial converts (if they've converted)
Exclude:
- Free users (unless tracking free-to-paid)
- Customers who joined during the period
- Paused accounts (track separately)
Step 3: Count Churned Customers
A customer has churned when:
- They actively canceled
- Their subscription lapsed/wasn't renewed
- Account was closed due to payment failure
- They downgraded to free (if you count this)
Important: Be consistent with your definition month over month.
Step 4: Apply the Formula
Customer Churn Rate = (Churned Customers ÷ Starting Customers) × 100
Calculate Revenue Churn Rate (MRR Churn)
Customer churn counts logos. Revenue churn counts dollars. Both matter.
Gross Revenue Churn
Gross MRR Churn Rate = (Lost MRR ÷ Starting MRR) × 100
Example:
- Starting MRR: $50,000
- Lost MRR from churned customers: $3,500
- Gross MRR Churn: $3,500 ÷ $50,000 × 100 = 7%
Net Revenue Churn
Accounts for expansion revenue (upgrades, add-ons):
Net MRR Churn = ((Lost MRR - Expansion MRR) ÷ Starting MRR) × 100
Example:
- Starting MRR: $50,000
- Lost MRR: $3,500
- Expansion MRR: $2,000
- Net MRR Churn: ($3,500 - $2,000) ÷ $50,000 × 100 = 3%
Negative net churn means expansion exceeds losses—a sign of strong product-market fit.
Customer Churn vs Revenue Churn: Why Both Matter
| Scenario | Customer Churn | Revenue Churn |
|---|---|---|
| Lost 10 customers at $50/month | 10 customers | $500 MRR |
| Lost 1 customer at $2,000/month | 1 customer | $2,000 MRR |
Same revenue impact can look very different in customer churn.
Track both to understand:
- Customer satisfaction (customer churn)
- Financial health (revenue churn)
- Which segments are at risk
Monthly vs Annual Churn Rate
Monthly churn doesn't simply multiply by 12 for annual. It compounds.
Conversion Formula
Annual Churn = 1 - (1 - Monthly Churn)^12
Quick Reference Table
| Monthly Churn | Annual Equivalent |
|---|---|
| 1% | 11.4% |
| 2% | 21.5% |
| 3% | 30.6% |
| 4% | 39.2% |
| 5% | 46.0% |
| 6% | 52.4% |
| 7% | 58.0% |
| 8% | 63.2% |
| 10% | 71.8% |
| 15% | 85.9% |
A "small" 5% monthly churn = 46% of customers lost annually.
Advanced: Cohort-Based Churn
For deeper insights, track churn by signup cohort:
| Cohort | Month 1 | Month 2 | Month 3 | Month 6 | Month 12 |
|---|---|---|---|---|---|
| Jan signups | 100 | 85 | 78 | 65 | 52 |
| Feb signups | 100 | 88 | 82 | 70 | 58 |
| Mar signups | 100 | 90 | 85 | 75 | - |
This reveals:
- Is churn improving over time?
- When do customers typically churn?
- Which acquisition sources retain best?
Churn Rate by Segment
Break down churn to find patterns:
By Plan Type
| Plan | Churn Rate | Insight |
|---|---|---|
| Monthly | 8% | Higher, expected |
| Annual | 2% | Lower commitment churn |
| Enterprise | 0.5% | Sticky, high touch |
By Customer Size
| Segment | Churn Rate | Action |
|---|---|---|
| SMB | 7% | Improve onboarding |
| Mid-market | 4% | Enhance support |
| Enterprise | 1% | Maintain high touch |
By Acquisition Source
| Source | Churn Rate | Insight |
|---|---|---|
| Organic | 4% | High intent, good fit |
| Paid ads | 8% | Lower quality? |
| Referral | 3% | Best retention |
Churn Rate Benchmarks
By Business Model
| Model | Good | Average | Needs Work |
|---|---|---|---|
| B2B SaaS (SMB) | < 3% | 3-5% | > 7% |
| B2B SaaS (Enterprise) | < 1% | 1-2% | > 3% |
| B2C Subscriptions | < 5% | 5-8% | > 10% |
| Media/Streaming | < 6% | 6-10% | > 12% |
| Fitness/Wellness | < 7% | 8-12% | > 15% |
By Company Stage
| Stage | Typical Churn | Context |
|---|---|---|
| Pre-PMF | 10-15% | Finding fit, expected |
| Post-PMF | 5-8% | Stabilizing |
| Growth | 3-5% | Optimizing |
| Scale | 1-3% | Mature operations |
By Price Point
Higher prices typically mean lower churn:
- < $50/month: 6-10% churn
- $50-200/month: 4-7% churn
- $200-1000/month: 2-5% churn
-
$1000/month: 1-3% churn
Voluntary vs Involuntary Churn
Track these separately—they have different solutions.
Voluntary Churn
Customer actively cancels:
- Product issues
- Found alternative
- Budget constraints
- No longer needs
Fix with: Better product, onboarding, support
Involuntary Churn
Payment fails, customer loses access:
- Expired cards
- Insufficient funds
- Bank declines
Fix with: Dunning sequences
Key insight: Involuntary churn is 20-40% of total churn and is largely recoverable.
Common Calculation Mistakes
1. Including New Customers in the Base
Wrong: Using end-of-period customers Right: Use start-of-period customers only
2. Inconsistent Definitions
Wrong: Changing what counts as "churned" month to month Right: Document and stick to one definition
3. Ignoring Reactivations
Some churned customers return. Track:
- Gross churn (all cancellations)
- Net churn (after reactivations)
4. Not Segmenting
Average churn hides insights. Break it down.
5. Monthly ≠ Annual ÷ 12
Use the compound formula. 5% monthly ≠ 60% annual.
Churn Rate Calculator
Use our free tool to calculate your churn rate instantly:
The calculator will:
- Calculate customer and revenue churn
- Show monthly and annual projections
- Compare to industry benchmarks
- Identify your involuntary churn opportunity
Reducing Your Churn Rate
Once you know your churn rate, here's how to improve it:
Quick Wins (Involuntary Churn)
- Implement dunning - Recover failed payments automatically
- Add SMS - Multi-channel recovers 40% more
- Pre-authenticated links - Make updating payment easy
Medium-Term (Voluntary Churn)
- Improve onboarding - Get to value faster
- Monitor usage - Catch at-risk customers early
- Act on feedback - Fix common complaints
Long-Term
- Product improvements - Build what customers need
- Annual plans - Reduce decision points
- Customer success - Proactive relationship management
Key Takeaways
- Use the right formula for your needs (customer vs revenue)
- Be consistent with definitions month over month
- Monthly compounds - Small rates become big annually
- Segment your analysis - Average hides insights
- Track voluntary and involuntary separately - Different solutions
- Benchmark appropriately - Context matters
Next Steps
- Calculate your churn → - Free calculator
- Understand involuntary churn → - The preventable 20-40%
- Fix failed payments → - Start recovering revenue