SaaS Metrics Guide: ARR, MRR, LTV, CAC & More 2026
What gets measured gets managed. SaaS metrics reveal business health, guide decisions, and attract investors.
Key Takeaways
- Revenue metrics: ARR, MRR, NRR measure growth
- Unit economics: LTV, CAC, LTV:CAC measure efficiency
- Engagement: DAU/MAU, feature adoption measure stickiness
- Context matters: Benchmarks vary by stage and market
- Track trends, not just snapshots
Revenue Metrics
MRR (Monthly Recurring Revenue)
The foundation of SaaS metrics.
Formula: Sum of all monthly subscription revenue
Components:
- New MRR: New customers
- Expansion MRR: Upsells/cross-sells
- Contraction MRR: Downgrades
- Churned MRR: Lost customers
ARR (Annual Recurring Revenue)
MRR × 12. Use for B2B and longer contracts.
Formula: MRR × 12
Net MRR (Net New MRR)
Formula: New + Expansion - Contraction - Churned
Revenue Benchmarks
| Stage | Good MRR Growth |
|---|---|
| Seed | 15-20% monthly |
| Series A | 10-15% monthly |
| Series B | 5-10% monthly |
| Growth | 2-5% monthly |
Retention Metrics
Gross Revenue Retention (GRR)
Revenue from existing customers (excludes expansion).
Formula: (Start MRR - Churned - Contraction) / Start MRR
Benchmark: 85-95%+ is healthy
Net Revenue Retention (NRR)
Includes expansion. Can exceed 100%.
Formula: (Start MRR + Expansion - Churned - Contraction) / Start MRR
Benchmarks:
- SMB: 90-100%
- Mid-market: 100-110%
- Enterprise: 110-130%
Logo Retention
Percentage of customers retained.
Formula: (Customers End - New) / Customers Start
Unit Economics
LTV (Customer Lifetime Value)
Total revenue from a customer over relationship.
Simple Formula: ARPA × Gross Margin × Customer Lifespan
Better Formula: ARPA × Gross Margin / Churn Rate
CAC (Customer Acquisition Cost)
Cost to acquire a new customer.
Formula: (Sales + Marketing Costs) / New Customers Acquired
Include: Salaries, ads, tools, events, content
LTV:CAC Ratio
Formula: LTV / CAC
Benchmarks:
- Below 1: Losing money
- 1-3: Unprofitable or early stage
- 3-5: Healthy
- Above 5: Underinvesting in growth
CAC Payback Period
Months to recover CAC.
Formula: CAC / (ARPA × Gross Margin)
Benchmarks:
- SMB: 6-12 months
- Mid-market: 12-18 months
- Enterprise: 18-24 months
Growth Metrics
Growth Rate
MoM Growth: (This Month - Last Month) / Last Month
YoY Growth: (This Year - Last Year) / Last Year
Rule of 40
Revenue growth + profit margin ≥ 40%
Example: 30% growth + 10% margin = 40 ✓
Burn Multiple
Net burn / Net new ARR
Benchmarks:
- Under 1: Great efficiency
- 1-2: Healthy
- Over 2: Inefficient
Engagement Metrics
DAU/MAU Ratio
Daily active users / Monthly active users
Benchmarks:
- SaaS Tools: 15-25%
- Social/Communication: 50%+
- Consumer Apps: 10-20%
Feature Adoption
Users using feature / Total users
Time to Value (TTV)
Time from signup to first value milestone
Activation Rate
Users reaching activation milestone / Total signups
SaaS Metric Dashboard
| Metric | Formula | Healthy Benchmark |
|---|---|---|
| MRR Growth | (New MRR - Churned) / Start | 5-15% monthly |
| GRR | Retained / Start | 85-95% |
| NRR | (Retained + Expansion) / Start | 100-120% |
| LTV:CAC | LTV / CAC | 3-5x |
| CAC Payback | CAC / Monthly Margin | 12-18 months |
| Rule of 40 | Growth + Margin | ≥40 |
| DAU/MAU | Daily / Monthly | 15-25% |
Metrics by Audience
For Board/Investors
- ARR and growth rate
- NRR and GRR
- Rule of 40
- Burn multiple
For Sales Leadership
- Pipeline and quota
- Win rates
- Sales cycle length
- ACV/ASP
For Marketing
- CAC and payback
- Lead volume and quality
- Conversion rates
- Attribution
For Product
- Activation rate
- Feature adoption
- DAU/MAU
- NPS/CSAT
For CS
- NRR and GRR
- Health scores
- Churn and save rate
- CSAT
FAQ
ARR vs. MRR—which should I use?
MRR for monthly/self-serve businesses. ARR for annual contracts and B2B. Investors prefer ARR for larger companies.
What's a good LTV:CAC ratio?
3:1 is the classic benchmark. Higher may mean underinvestment. Lower is unsustainable. Context matters—PLG companies can run lower.
How do I calculate NRR if customers are on different contract lengths?
Normalize to monthly. Convert all revenue to MRR, then calculate cohort retention. Annual contracts should still use monthly normalization.
When should I worry about metrics?
When trends change. Occasional dips are normal. Sustained declines (3+ months) or sudden shifts require investigation.
Which metrics matter most at different stages?
Seed: Growth rate, activation. Series A: Unit economics, NRR. Series B+: Efficiency (burn multiple, Rule of 40).
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