Gross Churn vs Net Churn: What's the Difference?
Both metrics measure revenue loss, but gross churn stops at the total while net churn factors in expansion. Here's when each one matters and how to reduce both.
The core difference
Both metrics start in the same place: how much recurring revenue walked out the door this month. The difference is what happens next. Gross churn stops counting. Net churn asks a follow-up question: did expansion revenue from your remaining customers offset any of that loss?
Gross revenue churn
Gross revenue churn rate = (Churned MRR + Contraction MRR) / Starting MRR x 100
This is the raw number. Every dollar lost to cancellations, downgrades, and failed payments counts, with no offsets. If you started the month with $100,000 in MRR and lost $5,000 between cancellations and downgrades, your gross churn rate is 5%.
Gross churn can’t be negative. It can only be zero (nothing lost) or positive.
Net revenue churn
Net revenue churn rate = (Churned MRR + Contraction MRR - Expansion MRR) / Starting MRR x 100
Same scenario. You lost $5,000, but existing customers upgraded by $3,000 during the same period. Net churn is 2%. If those upgrades had been $6,000 instead, your net churn would be -1%, which means you’ve achieved negative churn. Your existing base grew in value.
When to track which
Track both. They answer different questions.
Gross churn tells you how leaky the bucket is. It’s a product stickiness signal. If gross churn is climbing, you’ve got a retention problem that no amount of upselling will fix long-term. A company with 8% gross churn and 2% net churn looks fine on the surface, but that 8% means the product isn’t holding customers on its own.
Net churn tells you whether the business is growing from its installed base. Investors care about this number because it reveals how efficiently you monetise existing relationships. Net churn below zero is the gold standard.
In practice, we’ve found that SaaS businesses tracking only net churn often miss early warning signs. Expansion can mask a deteriorating retention problem for several quarters before the underlying issue becomes impossible to ignore.
Reducing both numbers
Twenty to 40% of revenue churn typically comes from failed payments rather than deliberate cancellations. Most SaaS teams don’t realise how much of their churn is mechanical rather than intentional until they check their Stripe dashboard or a tool like ChurnWard.
Recovering these through dunning reduces both gross and net churn simultaneously, because you’re preventing revenue from being lost in the first place. It’s usually the fastest win available because it requires no product changes.