Churn Rate Calculator
Optional — enables revenue impact calculation
Enter Your Customer Data
Fill in your customer counts (or MRR for net revenue mode) to calculate churn rate, retention, lifetime value, and revenue impact.
How to Use the Churn Rate Calculator
Elige tu Modo de Cálculo
Select from four modes at the top: Customer Churn (track account attrition), Revenue Churn (measure dollar impact), Net Revenue Churn (factor in expansion MRR from upsells), or Multi-Year Projection (forecast customer count and revenue over 1–10 years). For most use cases, start with Customer Churn mode.
Enter Your Customer Counts
In Customer Churn mode, enter the number of customers at the start of your period and the number who cancelled. Alternatively, switch to the 'Start + End + New' method if you know your beginning and ending counts plus new acquisitions — the calculator derives the churned count automatically.
Add ARPU for Revenue Impact
Enter your Average Monthly Revenue per Customer (ARPU) to unlock the revenue impact section, which shows monthly and annual revenue lost to churn. You can also enter a target churn rate to see how much additional revenue would be retained if you achieved that lower rate — quantifying the ROI of retention initiatives.
Review Benchmarks and Export
Check your churn rate against the industry benchmark table to see whether you fall in the Excellent, Good, Average, High, or Critical band. Use the Export CSV button to download your results for reports or spreadsheets, or Print Results for a clean printable summary.
Preguntas Frecuentes
What is a good monthly churn rate for a SaaS business?
For B2B SaaS companies targeting enterprise customers, a monthly churn rate below 0.5% (roughly 6% annually) is considered excellent. For SMB-focused SaaS, 0.5–1% monthly (6–12% annually) is generally acceptable. Consumer-facing SaaS products tolerate higher churn — 1–3% monthly is common and considered average. If your monthly churn exceeds 5%, it typically indicates a serious product-market fit or onboarding problem that requires urgent attention. Keep in mind that early-stage companies often have higher churn than mature ones as they refine their ideal customer profile and improve their product.
What is the difference between customer churn and revenue churn?
Customer churn measures the percentage of accounts lost, while revenue churn (also called MRR churn or gross revenue churn) measures the percentage of monthly recurring revenue lost from those churned accounts. These can differ substantially when customers of different sizes churn at different rates. For example, if you lose 10 small customers ($100/month each) but retain all enterprise customers ($10,000/month each), your customer churn rate might be 5% but your revenue churn rate is much lower. Net revenue churn goes further by subtracting expansion MRR (revenue from upsells/upgrades) from gross revenue churn, which can result in negative net revenue churn when expansion outpaces losses.
How do I convert monthly churn rate to annual churn rate?
The precise formula is: Annual Churn Rate = 1 − (1 − Monthly Churn Rate)^12. For example, a 3% monthly churn rate converts to Annual = 1 − (0.97)^12 = 1 − 0.6938 = 30.6% — not 36% as the simple multiplication (3% × 12) would suggest. The simple approximation increasingly overstates annual churn as the monthly rate rises. At low rates (under 1% monthly), the approximation is reasonably accurate, but at 5% monthly the error becomes significant: precise annual churn is approximately 46%, not 60%. This calculator always uses the precise compounding formula.
What is negative churn and how is it achieved?
Negative churn occurs when expansion MRR from upsells, cross-sells, and plan upgrades by existing customers exceeds the MRR lost from churned accounts — meaning net revenue from the existing customer base grows even after accounting for all cancellations. Achieving negative churn is considered the gold standard for SaaS businesses because it creates a self-reinforcing growth engine: even if you stopped acquiring new customers entirely, your revenue would continue growing. Negative churn is most common in product-led growth companies with usage-based pricing, or in businesses with strong land-and-expand motions where customers naturally grow their usage over time.
Why does the Multi-Year Projection mode show two lines in the chart?
The projection chart displays two scenarios side by side: the blue line shows what customer count would look like if only your growth rate applied with zero churn (the theoretical maximum), while the primary-color line shows the realistic trajectory with both your growth rate and churn rate applied. The gap between the two lines represents the cumulative cost of churn over time — a powerful visual that demonstrates how even modest churn rates compound into significant customer base erosion over multiple years. This comparison is especially useful for board presentations and investor pitches to justify investment in retention programs.
How should I use the target churn rate scenario?
The target churn rate field lets you model the financial benefit of reducing churn to a specific goal. Enter your current churn data and ARPU, then set a target rate below your current rate — for example, if you're at 4% monthly and want to model a target of 2%. The calculator shows how many additional customers would be retained and the resulting monthly and annual revenue gains. This is a valuable tool for building internal business cases for retention investments: if reducing churn from 4% to 2% generates an additional $50,000 per month, that quantifies what you should be willing to spend on retention technology, customer success headcount, or product improvements.