The basics
How to calculate SaaS churn rate
Churn measures the share of an opening customer or revenue cohort that you lose during a defined period. Always state the period—monthly, quarterly or annual—and use the same definition of an active customer each time.
Customer churn formula
Count only customers who belonged to the opening cohort. Customers acquired after the period began are not part of the denominator.
If you do not know how many customers left, you can estimate it as starting customers + new customers − ending customers. Aggregate totals cannot show whether a newly acquired customer also left during the period, so direct cohort data is more accurate.
Worked example
A SaaS company starts the month with 500 paying accounts and 25 of those accounts cancel. Its monthly customer churn is 25 ÷ 500 × 100 = 5%. Its monthly retention rate is 95%.
Revenue churn formulas
Revenue churn captures the financial weight of the customers you lose. It is especially useful when account values vary.
Customer churn vs revenue churn
Customer churn treats every account equally. Revenue churn reflects how much each account pays. Losing one large account can produce low customer churn but high revenue churn; losing several small accounts can do the opposite.
Monthly vs annual churn
Monthly churn should not normally be multiplied by 12. The customer base shrinks each month, so annualization must account for compounding.
At 5% monthly churn, annualized churn is approximately 45.96%—not 60%. This is a projection that assumes the churn rate stays constant. Actual annual cohort churn should be measured from real customer data whenever possible.
What is a good SaaS churn rate?
There is no single healthy churn rate for every SaaS company. A useful comparison needs to match your customer segment, price point, contract length and reporting period.
Compare like with like
A monthly rate for a low-ACV, month-to-month product should not be judged against an annual rate for enterprise contracts. Compare customer churn separately from revenue churn, and treat improvement in your own cohorts as the most reliable signal.
Common churn calculation mistakes
Including new customers
New customers do not belong in the opening cohort. Track acquisition separately from churn.
Using net customer change
Ending with more customers does not mean nobody churned. Strong acquisition can hide customer losses.
Mixing time periods
A monthly rate cannot be compared directly with an annual rate. Label and convert periods consistently.
Treating logo and revenue churn as equal
Account values differ. Monitor both customer churn and revenue churn.
Ignoring cohorts
A blended average can hide weak onboarding, plan-specific problems or changes in customer quality.
Using one universal benchmark
Churn varies with market, contract length, price, company stage and customer segment.
How to reduce SaaS churn
A churn rate tells you what happened, not why. Segment the result and investigate the behavior that came before cancellation.
Fix early activation
If new customers leave in their first few months, examine whether onboarding gets each segment to a meaningful first outcome.
Find adoption gaps
Identify the valuable workflows retained users adopt and drifting users miss. Use contextual guidance instead of relying only on launch emails.
Ask before cancellation
Use in-app NPS and targeted surveys to surface friction while there is still time to respond.
Learn from every cancellation
Capture a structured cancellation reason, review patterns by segment and fix recurring causes instead of guessing.
Churn is the outcome. The fix starts earlier.
Find where users stop seeing value
FlowNavi helps SaaS teams guide users through onboarding, improve feature adoption and collect in-app feedback before frustration becomes churn.
SaaS churn rate FAQs
What is the SaaS churn rate formula?
Customer churn rate equals customers from the opening cohort who left during the period, divided by customers at the beginning of the period, multiplied by 100. Revenue churn uses recurring revenue instead of customer counts.
Should new customers be included in the churn calculation?
No. New customers should not be added to the opening-customer denominator. Churn measures how many customers from the group you had at the beginning were lost. Track new customers separately when calculating net customer growth.
What is a good SaaS churn rate?
There is no universal good churn rate. A useful comparison needs a similar customer segment, price point, contract length and reporting period. Track your own cohorts consistently and compare customer churn separately from revenue churn.
How do I convert monthly churn to annual churn?
Use compounding: annualized churn equals 1 minus (1 minus monthly churn) raised to the twelfth power. A 5% monthly churn rate annualizes to approximately 45.96%, not 60%.
What is the difference between customer churn and revenue churn?
Customer churn measures the percentage of accounts lost. Revenue churn measures recurring revenue lost through cancellations and downgrades. The two can differ significantly when customers pay different amounts.
What is the difference between gross and net revenue churn?
Gross revenue churn includes recurring revenue lost to cancellations and downgrades. Net revenue churn subtracts expansion revenue from existing customers. Gross churn cannot be negative, while net revenue churn can.
Can churn be negative?
Customer churn and gross revenue churn cannot be negative. Net revenue churn becomes negative when expansion revenue from existing customers exceeds revenue lost through cancellations and downgrades. That produces net revenue retention above 100%.
What is the relationship between churn and retention?
For the same cohort and period, retention rate equals 100% minus churn rate. If monthly customer churn is 5%, monthly customer retention is 95%.
How frequently should a SaaS company calculate churn?
Most subscription businesses monitor churn monthly and review longer-term cohort retention quarterly. Use the same customer definition and reporting method each time so results remain comparable.