SaaS Finance Metrics Quick Reference
Cheat sheet for 25+ SaaS metrics: formulas, benchmarks, red flags, and decision frameworks for feature investment, channel scaling, pricing changes, and business health.
You're in a board prep meeting and someone asks "what's a good Magic Number?" or "what's NRR again?" and you need the answer in 30 seconds, not a blog post. A scannable reference across revenue, unit economics, capital efficiency, and efficiency ratios — formulas, benchmarks, red flags, and decision rules all in one place.
Who it's for: PMs prepping for reviews, RevOps and finance partners checking formulas mid-analysis, founders preparing investor updates, operators refreshing metric benchmarks, product leaders diagnosing business health
Example
"What's a healthy LTV:CAC and how do I know if we should scale paid social?" → Framework 2 channel-scaling decision + specific metrics (LTV:CAC >3:1, payback <18mo, NRR by channel, Magic Number >0.75) + red flag thresholds + comparison rules
CLAUDE.md Template
New here? 3-minute setup guide → | Already set up? Copy the template below.
npx ccplaybooks add finance-metrics-quickref# SaaS Finance Metrics Quick Reference
Fast lookup for any SaaS finance metric. Formulas, benchmarks, red flags, and decision frameworks — optimized for speed during reviews and analysis. Not a teaching tool.
## Metric Categories
1. **Revenue & Growth** — Top-line (revenue, ARPU, ARPA, MRR/ARR, churn, NRR, expansion)
2. **Unit Economics** — Customer-level profitability (CAC, LTV, payback, margins)
3. **Capital Efficiency** — Cash (burn, runway, OpEx, net income)
4. **Efficiency Ratios** — Growth vs. profitability balance (Rule of 40, magic number)
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What This Does
Fast lookup for SaaS finance metrics: formula, good benchmark, red flag, action to take. Organized by category (revenue & growth, unit economics, capital efficiency, efficiency ratios) plus four decision frameworks (feature investment, channel scaling, pricing changes, business health by stage).
Not a teaching tool. A scannable reference for speed — use deep-dive skills (saas-revenue-growth-metrics, saas-economics-efficiency-metrics) to learn.
Quick Start
mkdir -p ~/Documents/FinanceRef
mv ~/Downloads/CLAUDE.md ~/Documents/FinanceRef/
cd ~/Documents/FinanceRef
claude
Ask any metric question ("What's NRR?", "What's a healthy payback period for SMB?") and Claude pulls the formula, benchmark, and red flag from the reference table.
Four Decision Frameworks
| Framework | Key Metrics | Core Question |
|---|---|---|
| Build a Feature? | Revenue, Gross Margin, LTV, Contribution Margin | Is ROI >3x or LTV impact >10x? |
| Scale a Channel? | CAC, LTV:CAC, Payback, Magic Number, NRR by channel | Is LTV:CAC >3:1 AND Payback <18mo? |
| Change Pricing? | ARPU, Churn, NRR, CAC Payback | Net positive after churn risk? |
| Business Health? | Growth %, NRR, LTV:CAC, Rule of 40, Magic Number | Stage-appropriate metrics hit? |
Business Health by Stage
Early (Pre-$10M ARR): Growth >50% YoY, LTV:CAC >3:1, Gross Margin >70%, Runway >12 mo Growth ($10M-$50M ARR): Growth >40%, NRR >100%, Rule of 40 >40, Magic Number >0.75 Scale ($50M+ ARR): Growth >25%, NRR >110%, Rule of 40 >40, Profit Margin >10%
Tips & Best Practices
- Use cohort-level, not blended. Company averages hide degrading cohorts.
- Always pair Quick Ratio with Churn. High new MRR can mask a leaky bucket.
- Check payback in months, not LTV:CAC alone. LTV:CAC 5:1 with 36-month payback is still a cash trap.
- Benchmarks vary by stage. "Good" for a $2M ARR company is different from "good" for $50M.
- Pick a decision question first. Tracking 25 metrics without a question = analysis paralysis.
Common Pitfalls
- Using blended averages instead of cohort/channel/segment
- Scaling acquisition when retention is quietly deteriorating
- Treating high LTV:CAC as sufficient (ignoring payback and runway)
- Comparing benchmarks across mismatched stages
- Raising prices on ARPU math alone (no churn/contraction modeling)
- Tracking metrics without a specific decision they inform