Back to blog
Guides9 min readApr 25, 2026
MRR, ARR, ARPA, Churn: The Only Revenue Metrics Guide Your SaaS Needs
Clear definitions, formulas, and benchmarks for SaaS revenue metrics.
MRRARRSaaS metrics
MRR, ARR, ARPA, and NRR form the bedrock of every SaaS business.
MRR = Σ monthly subscription values
Normalize annual subscribers: Annual Plan Value ÷ 12. Net New MRR = New + Expansion - Contraction - Churned.
ARR = MRR × 12
Used for board reporting and investor discussions.
Net Revenue Retention (NRR)
NRR = (Starting MRR + Expansion - Contraction - Churned) ÷ Starting MRR × 100. World-class: >120%. Good: 100-120%.
Subscriply Tracking
All metrics update in real-time. AI Revenue Assistant answers metric questions in plain English.
S
Subscriply Team
Published Apr 25, 2026