finance-metrics-quickref

Purpose Quick reference for any SaaS finance metric without deep teaching. Use this when you need a fast formula lookup, benchmark check, or decision framework reminder. For detailed explanations, calculations, and examples, see the related deep-dive skills. This is not a teaching tool—it's a cheat sheet optimized for speed. Scan, find, apply. Key Concepts Metric Categories Metrics are organized into four families: Revenue & Growth — Top-line money (revenue, ARPU, ARPA, MRR/ARR, churn, NRR, expansion) Unit Economics — Customer-level profitability (CAC, LTV, payback, margins) Capital Efficiency — Cash management (burn rate, runway, OpEx, net income) Efficiency Ratios — Growth vs. profitability balance (Rule of 40, magic number) When to Use This Skill Use this when: You need a quick formula or benchmark You're preparing for a board meeting or investor call You're evaluating a decision and need to check which metrics matter You want to identify red flags quickly Don't use this when: You need detailed calculation guidance (use saas-revenue-growth-metrics or saas-economics-efficiency-metrics ) You're learning these metrics for the first time (start with deep-dive skills) You need examples and common pitfalls (covered in