What is MRR Churn? (Definition + SaaS example)
MRR churn measures the amount or rate of monthly recurring revenue lost from cancellations and downgrades during a period. SaaS teams use MRR churn to understand how much recurring revenue is leaking from the customer base before or after accounting for expansion.
What MRR Churn Means
MRR churn measures how much monthly recurring revenue a SaaS company loses during a reporting period. It usually combines two sources of loss:
Churned MRRfrom customers who cancel completelyContraction MRRfrom customers who downgrade, reduce seats, or lower spend
Some companies report a gross version that ignores expansion and a net version that subtracts expansion from the losses.
MRR Churn Formulas
Gross MRR Churn Rate
Gross MRR Churn = (Churned MRR + Contraction MRR) ÷ Starting MRR × 100
Net MRR Churn Rate
Net MRR Churn = (Churned MRR + Contraction MRR − Expansion MRR) ÷ Starting MRR × 100
Worked SaaS Example
| Component | Amount |
|---|---|
| Starting MRR | $120,000 |
| Churned MRR | $4,000 |
| Contraction MRR | $1,500 |
| Expansion MRR | $2,500 |
Gross MRR churn = ($4,000 + $1,500) / $120,000 = 4.6%
Net MRR churn = ($4,000 + $1,500 - $2,500) / $120,000 = 2.5%
MRR Churn vs Revenue Churn
Why MRR Churn Matters
MRR churn tells you how much monthly revenue must be replaced before the company can grow. That makes it one of the most practical operating metrics in SaaS.
It is especially useful when paired with MRR, GRR, and NRR. Those metrics together show the size of the recurring base, how much leaked out, how much stayed, and whether expansion was strong enough to offset the losses.
Track MRR churn drivers in JustPaid
Frequently Asked Questions
Gross MRR churn includes only revenue lost from cancellations and downgrades. Net MRR churn subtracts expansion MRR from those losses, showing the final monthly impact on existing recurring revenue.
Related Terms
MRR (Monthly Recurring Revenue)
Monthly Recurring Revenue (MRR) is the predictable revenue a SaaS company earns each month from active subscriptions. MRR normalizes different billing periods — annual, quarterly, and monthly — into one consistent monthly figure, making it the foundational metric for SaaS financial planning.
Revenue Churn
Revenue churn measures how much recurring revenue a SaaS company loses from downgrades and cancellations during a period. It is often expressed as lost MRR or ARR, or as a percentage of starting recurring revenue, and is more financially meaningful than customer churn alone.
NRR (Net Revenue Retention)
Net Revenue Retention (NRR) measures the percentage of recurring revenue retained from existing customers over a period, including expansion, contraction, and churn. An NRR above 100% means a SaaS company is growing revenue from its existing customer base without acquiring a single new customer.
GRR (Gross Revenue Retention)
Gross Revenue Retention (GRR) measures the percentage of recurring revenue retained from existing customers over a period, excluding any expansion revenue. GRR can never exceed 100% and reflects the core stickiness of a SaaS product — how much revenue stays without upsells compensating for losses.
