Churn kills SaaS companies slowly. Revenue looks fine for months, sometimes years, then one quarter you realize the growth has stalled and the math just doesn’t work anymore. By then you’ve burned through your runway fixing the wrong things.
Calculate your churn now, before that conversation happens.
Customer churn vs MRR churn
Customer churn rate = Customers lost / Customers at start of period.
MRR churn rate = MRR lost / MRR at start of period.
These two numbers are almost always different, and the difference tells you something important. If customer churn is 4% but MRR churn is 1.5%, your bigger customers are sticking and smaller ones are leaving. That’s net good. If MRR churn is higher than customer churn, you’re losing your high-value accounts first. That’s a serious warning sign.
Average customer lifetime
Customer lifetime = 1 / Monthly churn rate (expressed as a decimal).
At 2% monthly churn, average lifetime is 50 months (4.2 years). At 5%, it’s 20 months. At 10%, just 10 months. These aren’t abstract numbers: they directly determine your LTV, which determines how much you can spend on CAC, which determines your growth ceiling.
A startup in Bengaluru building a B2B SaaS tool for CA firms was seeing 8% monthly churn. At that rate, the average customer lasted about 12 months. They had a revolving door problem. They invested 4 months in onboarding improvement and got churn down to 3.5%. Average lifetime went from 12 months to 29 months. LTV almost tripled without changing the product price.
Benchmarks for Indian SaaS
Under 2% monthly churn is world-class. 2-5% is the industry average for SMB-focused SaaS. Above 5% means retention is a problem. Above 10% and you need to stop everything else and fix this first.
Annual churn compounds differently from what people expect. 3% monthly churn sounds small but translates to 30.6% annual churn. That means you’re replacing nearly a third of your customer base every year just to stay flat.
Check how churn flows into your MRR with the MRR calculator.