Finance Metrics QuickrefSAFE

Product Management skills framework built on battle-tested methods for Claude Code, Cowork, Codex, and AI agents.

The instruction file, verbatim from the audited commit — this is the text the model reads, and the surface the audit's instruction layer examines. Quoted here so you can judge it without cloning anything.

---
name: finance-metrics-quickref
argument-hint: "[metric name]"
description: Look up SaaS finance metrics, formulas, and benchmarks fast. Use when you need a quick metric definition, formula, or benchmark during analysis.
intent: >-
  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.
type: component
best_for:
  - "Quick metric lookups during product or finance reviews"
  - "Checking formulas and benchmarks without reading a long explainer"
  - "Refreshing decision rules for common SaaS metrics"
scenarios:
  - "What is the formula for NRR and what is a good benchmark?"
  - "Give me a quick reference for CAC payback and Rule of 40"
  - "I need a fast SaaS metrics cheat sheet for a business review"
theme: finance-metrics
estimated_time: "5-10 min"
---


## 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.

## Input

**Works best with:** The metric you need — name it and get the formula, benchmark, and decision context.
**Also useful:** Your numbers, if you want the formula applied on the spot.

Anything supplied with the invocation itself — text after the skill name, a pasted context dump, or an appended `ARGUMENTS:` line — counts as answers already given. Use it and skip whatever it covers; don't re-ask.

**Arriving empty-handed? That works too.** Ask for the metric family you're working in (revenue, retention, efficiency, capital) and scan from there.

**Example invocation:** `Quick ref: burn multiple — formula, benchmark, and whether 1.7 is bad for Series B.`

## Key Concepts

### Metric Categories

Metrics are organized into four families:

1. **Revenue & Growth** — Top-line money (revenue, ARPU, ARPA, MRR/ARR, churn, NRR, expansion)
2. **Unit Economics** — Customer-level profitability (CAC, LTV, payback, margins)
3. **Capital Efficiency** — Cash management (burn rate, runway, OpEx, net income)
4. **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 related skills)

---

## Application

### All Metrics Reference Table

| **Metric** | **Formula** | **What It Measures** | **Good Benchmark** | **Red Flag** |
|------------|-------------|----------------------|-------------------|--------------|
| **Revenue** | Total sales before expenses | Top-line money earned | Growth rate >20% YoY (varies by stage) | Revenue growing slower than costs |
| **ARPU** | Total Revenue / Total Users | Revenue per individual user | Varies by model; track trend | ARPU declining cohort-over-cohort |
| **ARPA** | MRR / Active Accounts | Revenue per customer account | SMB: $100-$1K; Mid: $1K-$10K; Ent: $10K+ | High ARPA + low ARPU (undermonetized seats) |
| **ACV** | Annual Recurring Revenue per Contract | Annualized contract value | SMB: $5K-$25K; Mid: $25K-$100K; Ent: $100K+ | ACV declining (moving downmarket unintentionally) |
| **MRR/ARR** | MRR × 12 = ARR | Predictable recurring revenue | Growth + quality matter; track components | New MRR declining while churn stable/growing |
| **Churn Rate** | Customers Lost / Starting Customers | % of customers who cancel | Monthly <2% great, <5% ok; Annual <10% great | Churn increasing cohort-over-cohort |
| **NRR** | (Start ARR + Expansion - Churn - Contraction) / Start ARR × 100 | Revenue retention + expansion | >120% excellent; 100-120% good; 90-100% ok | NRR <100% (base is contracting) |
| **Expansion Revenue** | Upsells + Cross-sells + Usage Growth | Additional revenue from existing customers | 20-30% of total revenue | Expansion <10% of MRR |
| **Quick Ratio** | (New MRR + Expansion MRR) / (Churned MRR + Contraction) | Revenue gains vs. losses | >4 excellent; 2-4 healthy; <2 leaky bucket | Quick Ratio <2 (leaky bucket) |
| **Gross Margin** | (Revenue - COGS) / Revenue × 100 | % of revenue after direct costs | SaaS: 70-85% good; <60% concerning | Gross margin <60% or declining |
| **CAC** | Total S&M Spend / New Customers | Cost to acquire one customer | Varies: Ent $10K+ ok; SMB <$500 | CAC increasing while LTV flat |
| **LTV** | ARPU × Gross Margin % / Churn Rate | Total revenue from one customer | Must be 3x+ CAC; varies by segment | LTV declining cohort-over-cohort |
| **LTV:CAC** | LTV / CAC | Unit economics efficiency | 3:1 healthy; <1:1 unsustainable; >5:1 underinvesting | LTV:CAC <1.5:1 |
| **Payback Period** | CAC / (Monthly ARPU × Gross Margin %) | Months to recover CAC | <12 months great; 12-18 ok; >24 concerning | Payback >24 months (cash trap) |
| **Contribution Margin** | (Revenue - All Variable Costs) / Revenue × 100 | True contribution after variable costs | 60-80% good for SaaS; <40% concerning | Contribution margin <40% |
| **Burn Rate** | Monthly Cash Spent - Revenue | Cash consumed per month | Net burn <$200K manageable early; <$500K growth | Net burn accelerating |
| **Runway** | Cash Balance / Monthly Net Burn | Months until money runs out | 12+ months good; 6-12 ok; <6 crisis | Runway <6 months |
| **OpEx** | S&M + R&D + G&A | Costs to run the business | Should grow slower than revenue | OpEx growing fas

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

What the source does

Filesystem

none-observed

Network

none-observed

Shell

none-observed

Dependencies

pinned

Secrets in source

none-found

Findings (0)

No findings outside the package's declared scope.

Gates applied: no_behavioural_pass.