Calculate your customer churn rate, retention rate, annualized churn, and estimated LTV. Compare against SaaS industry benchmarks — all in your browser.
The average B2B SaaS monthly churn rate is 3-5%, while top-quartile companies achieve 1-2%. Churn above 7% monthly (84% annually) is unsustainable. A 5% monthly churn compounds to 46% annual loss — not 60%, because the customer base shrinks each month (formula: 1 - (1-0.05)^12). Even with strong growth, this is unsustainable. This calculator shows your churn in under 10 seconds and benchmarks it against your industry.
Sources: ProfitWell 2025 SaaS Metrics Benchmark, ChartMogul SaaS Churn Report 2025, OpenView SaaS Benchmarks. See Core Data below for full methodology.
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Get the Notion Template →| Metric | Value | Source | Test Conditions |
|---|---|---|---|
| B2B SaaS Average Monthly Churn | 3-5% | ProfitWell 2025 | Sales-led B2B SaaS, ACV > $5,000 |
| Top-Quartile B2B SaaS Churn | 1-2% | ChartMogul 2025 | Top 25% of 2,000+ SaaS companies |
| B2C SaaS Average Monthly Churn | 5-7% | ProfitWell 2025 | Self-serve B2C, lower ACV |
| E-commerce Subscription Churn | 6-8% monthly | HubSpot 2025 | DTC subscription boxes, meal kits |
| Unsustainable Churn Threshold | > 7% monthly | OpenView SaaS Benchmarks | 84% annualized — faster than replacement |
| Healthy Net Revenue Retention | > 100% | OpenView SaaS Benchmarks | Expansion offsets gross churn |
| Churn Impact: 5% monthly | 46% annual loss | Calculated | (1 - 0.05)^12 = 0.54 retained |
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| Feature | This Calculator | Spreadsheet Formula | Expensive Analytics Tools |
|---|---|---|---|
| Churn rate calculation | Instant, no formula needed | Requires manual formula entry | Automated but needs integration |
| Annualized churn (compounded) | Auto-calculated correctly | Often wrong (×12 instead of ^12) | Available on premium plans |
| Industry benchmark comparison | Built-in (5 industries) | Must research separately | Often not included |
| Estimated LTV | Auto-calculated with ARPU | Requires second formula | Available on premium plans |
| Data privacy | 100% local browser | Local file | Data sent to vendor servers |
| Cost | Free | Free (if you have Excel) | $50-$500/month |
Churn Rate = (Customers Lost During Period ÷ Customers at Start of Period) × 100. For example, if you start with 1,000 customers and lose 35 in a month, your monthly churn is 35 ÷ 1,000 = 3.5%. The denominator is always starting customers, not ending customers or average customers — this is the industry standard.
For B2B SaaS, 3-5% monthly churn is average. Top-quartile companies achieve 1-2%. Churn above 7% monthly (84% annualized) is unsustainable — you're losing customers faster than you can replace them. Note: these are gross churn figures. Net churn can be negative if expansion revenue exceeds losses, which is a sign of a healthy product.
Do NOT multiply by 12 — that overstates churn. The correct formula is: Annual Churn = 1 - (1 - Monthly Churn)^12. For example, 5% monthly churn = 1 - (0.95)^12 = 1 - 0.54 = 46% annual churn. This calculator compounds monthly churn automatically for accurate annualization. Quarterly churn annualizes as 1 - (1 - quarterly_churn)^4.
Gross churn measures only customers lost (or revenue lost from cancellations). Net churn subtracts expansion revenue (upgrades, upsells) from gross churn. A company with 5% gross churn and 8% expansion has -3% net churn — meaning revenue grows even as customers leave. Net revenue retention (NRR) above 100% is the gold standard for SaaS.
Simple LTV = ARPU ÷ Monthly Churn Rate. For example, $49 ARPU with 3.5% monthly churn = $49 ÷ 0.035 = $1,400 LTV. This is the simple formula. More accurate LTV accounts for gross margin: LTV = (ARPU × Gross Margin %) ÷ Churn Rate. If churn is 0%, LTV is theoretically infinite — in practice, cap at 60 months (5 years) as a realistic upper bound.
Five proven levers: (1) Improve onboarding — 40% of churn happens in the first 30 days, so a great first experience is critical. (2) Implement proactive outreach (QBRs, check-ins) before customers consider canceling. (3) Fix the top 3 reasons customers leave — survey canceled customers and address the root causes. (4) Build expansion paths so customers grow with you. (5) Measure cohort churn, not just aggregate — a 5% average might hide 15% churn in new customers and 1% in long-term customers.
Track both. Logo churn (customer count) tells you how many relationships you're losing. Revenue churn tells you the financial impact. Losing 5% of customers might only be 2% revenue churn if they're low-value accounts — or it could be 10% revenue churn if you're losing enterprise customers. Investors care most about net revenue retention (NRR), which combines both.
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