B2B SaaS Fundamentals
What is SaaS Metrics?
SaaS Metrics are the specific set of KPIs used to measure the health of a subscription software business — ARR, churn, NRR, CAC, LTV — that differ from metrics relevant to one-time-sale businesses.
Who Is It For?
SaaS metrics are tracked by RevOps and reviewed by executive leadership as the core language for discussing business health.
How Is It Used?
They’re used to evaluate the recurring-revenue business model on its own terms, since one-time-sale metrics don’t capture the dynamics that actually matter for SaaS.
- Track recurring revenue metrics (MRR, ARR) as the core top-line measures
- Monitor retention metrics (churn, NRR) alongside acquisition metrics (CAC, ACV)
- Compare CAC to LTV to judge whether unit economics are sustainable
- Segment metrics by cohort to see how performance changes over time
Related Terms & Concepts
Frequently Asked Questions
What are the most important SaaS metrics to track?
MRR/ARR, churn rate, NRR, CAC, and CAC payback period cover most of what matters, though the exact priority shifts depending on company stage and growth strategy.
Why don’t traditional business metrics fully apply to SaaS?
SaaS revenue is recurring rather than one-time, so metrics need to account for retention and expansion over time, not just the initial sale.
