What Is Churn Rate?
Churn rate is the percentage of customers who stop doing business with you during a specific time period. In SaaS, it typically means the share of subscribers who cancel or do not renew. It is the inverse of retention rate: if your churn rate is 3%, your retention rate is 97%.
The formula is: Churn Rate = (Customers Lost During Period / Customers at Start of Period) x 100
"Customers at start" means the active subscriber count at the beginning of the period, before any new sign-ups or cancellations. You do not include new customers acquired during that period in the denominator. This keeps the metric clean: it measures how well you retain the customers you already have.
A B2B SaaS company starts March with 4,200 active accounts. During March, 126 accounts cancel. The monthly churn rate is (126 / 4,200) x 100 = 3.0%. That means 97% of customers stayed.
Churn Rate Benchmarks
Churn rates vary significantly by business model, customer type, and company stage. A 5% monthly churn rate might be normal for a consumer mobile app but would be alarming for an enterprise SaaS product. Use the tables below to find the right benchmark for your situation.
Monthly Churn by SaaS Company Stage
| Company Stage | Monthly Churn | Annual Equivalent | Context |
|---|---|---|---|
| Pre-product-market fit | 8-15% | 64-85% | Still searching for the right value proposition. |
| Early growth (seed/Series A) | 3-7% | 31-58% | Product-market fit exists but onboarding is rough. |
| Scaling (Series B+) | 2-4% | 22-39% | Retention playbook is forming but inconsistent. |
| Mature SaaS | 1-2% | 11-22% | Strong onboarding, customer success team, product moat. |
| Best-in-class | <1% | <11% | Net negative revenue churn. Expansion exceeds losses. |
Monthly Churn: B2B vs B2C
| Segment | Typical Monthly Churn | Notes |
|---|---|---|
| B2B Enterprise ($50K+ ACV) | 0.5-1.5% | Annual contracts, high switching costs, dedicated CSMs. |
| B2B Mid-Market ($5K-$50K ACV) | 1-3% | Mix of monthly and annual billing. |
| B2B SMB (<$5K ACV) | 3-7% | Low switching costs, price-sensitive buyers. |
| B2C Subscription | 5-10% | Consumer products, streaming, fitness apps. |
| B2C Freemium (paid tier) | 4-8% | Users often downgrade to free tier rather than cancel. |
Monthly Churn by Company Size
| ARR Range | Median Monthly Churn | Top Quartile |
|---|---|---|
| $1M-$5M ARR | 4.5% | 2.0% |
| $5M-$20M ARR | 2.8% | 1.5% |
| $20M-$50M ARR | 2.0% | 1.0% |
| $50M+ ARR | 1.5% | 0.7% |
Sources: Paddle/ProfitWell Benchmarks, Bessemer Cloud Index. Individual company results vary based on market, pricing, and product category.
How to Calculate Churn Rate
The customer churn formula requires two numbers: customers at the start of the period and customers who left during that period.
Churn Rate (%) = (Customers Lost / Customers at Start) x 100
Worked example: A project management SaaS tool starts Q1 with 12,000 paying accounts. During the quarter, 840 accounts cancel.
- Quarterly Churn = (840 / 12,000) x 100 = 7.0%
- Retention Rate = 100 - 7.0 = 93.0%
- Implied Monthly Churn = 1 - (1 - 0.07)^(1/3) = 2.39%
- Annualized Churn = 1 - (1 - 0.07)^4 = 25.2%
- Avg Customer Lifespan = 1 / 0.0239 = 41.8 months (about 3.5 years)
The annualization formula accounts for compounding. Do not multiply monthly churn by 12 or quarterly churn by 4. Each period starts with fewer customers than the last, so simple multiplication overstates annual churn.
Customer Churn vs Revenue Churn
Customer churn and revenue churn tell different stories. Customer churn counts heads. Revenue churn counts dollars. A company can have low customer churn but high revenue churn if its biggest accounts are leaving.
| Metric | What It Measures | Formula | Best For |
|---|---|---|---|
| Customer (Logo) Churn | % of accounts lost | Lost Accounts / Start Accounts | Product health, broad retention signal |
| Gross Revenue Churn | % of MRR lost to cancellations and downgrades | Lost MRR / Start MRR | Revenue impact of churn |
| Net Revenue Churn | % of MRR lost after accounting for expansions | (Lost MRR - Expansion MRR) / Start MRR | True business health, investor reporting |
Example: A SaaS company starts the month with $500,000 MRR across 1,000 accounts. During the month, 30 accounts cancel ($18,000 MRR lost) and 5 accounts downgrade ($3,000 MRR lost). But 50 existing accounts expand ($28,000 MRR gained).
- Customer churn = 30 / 1,000 = 3.0%
- Gross revenue churn = ($18,000 + $3,000) / $500,000 = 4.2%
- Net revenue churn = ($21,000 - $28,000) / $500,000 = -1.4% (net negative = good)
This company has 3% customer churn but negative net revenue churn. The existing customer base is growing in value even as some accounts leave. This is the pattern investors look for.
Why Churn Rate Matters
Churn is the single most important metric for subscription businesses because it determines the ceiling on growth. No amount of new customer acquisition can outrun a high churn rate long-term.
The math is unforgiving. A SaaS company with 5,000 customers and 5% monthly churn loses 250 customers every month. Just to stay flat, the sales team must close 250 new accounts per month. To grow by 100 customers, they need 350 new sign-ups. At 2% churn, they only need 100 new sign-ups to stay flat and 200 to grow by the same 100 customers.
Churn compounds against you. A 5% monthly churn rate does not mean you lose 60% of customers per year. The actual number is about 46%, because each month's losses come from a smaller base. But over two years, you would need to replace roughly 70% of your starting customer base just to maintain the same number of accounts.
It determines customer lifetime value. CLV is directly tied to churn. At $100 ARPU and 5% monthly churn, each customer is worth $2,000 over their lifetime. Cut churn to 2% and the same customer is worth $5,000. That 3-point improvement in churn more than doubles the return on every acquisition dollar spent.
Investors watch it closely. VCs and PE firms treat churn as a proxy for product-market fit. A SaaS company applying for Series B funding with 7% monthly churn will face hard questions about retention. Below 2% monthly, and the conversation shifts from "do customers stay?" to "how fast can you grow?"
How to Reduce Churn
Reducing churn is almost always a higher-ROI activity than increasing acquisition. Here are the strategies that move the needle most for SaaS companies.
1. Fix onboarding first. Most churn happens in the first 90 days. If new users do not reach their "aha moment" quickly, they leave before experiencing the product's value. Track time-to-value and optimize for the shortest path to a meaningful outcome. A CRM tool that gets users to import contacts and close their first deal within the first week will retain far better than one that requires weeks of setup.
2. Identify leading indicators of churn. Usage data often predicts cancellations weeks before they happen. Track login frequency, feature adoption, and support ticket volume. A customer who logged in daily but has not logged in for two weeks is at high risk. Build automated alerts and outreach sequences triggered by these signals.
3. Segment and target your worst cohorts. Not all customers churn at the same rate. Break churn down by acquisition channel, plan type, company size, and time period. You may find that customers from a specific ad campaign churn at 3x the average, or that monthly subscribers churn at 5x the rate of annual subscribers. Fix the worst segments first.
4. Offer annual contracts with a discount. Customers on annual plans churn at roughly one-third the rate of monthly subscribers. A 15-20% discount for annual billing is standard. The trade-off is lower per-month revenue, but the retention improvement more than compensates. A $100/month customer on a monthly plan with 5% churn is worth $2,000. The same customer at $85/month on an annual plan with 1.5% churn is worth $5,667.
5. Build a cancellation flow that saves accounts. When a customer clicks "cancel," present a short survey and a relevant offer. If they cite price, offer a temporary discount or downgrade. If they cite a missing feature, show the roadmap. Industry data shows that 10-30% of cancellation attempts can be saved with a well-designed offboarding flow.
6. Invest in customer success for high-value accounts. Dedicated customer success managers reduce churn by 20-30% for the accounts they manage. The economics work for mid-market and enterprise customers. A CSM managing 40 accounts at $20,000 ACV each ($800K book) who reduces churn from 10% to 5% saves $40,000 in annual revenue, easily justifying the role.
This calculator provides estimates for informational purposes only. It does not constitute financial advice. Actual churn rates depend on your specific business model, market conditions, and customer base. Consult your finance or operations team for precise measurements.