Startup Metrics
Know the metrics that matter at each stage and what investors actually look for. Master the A16Z and YC frameworks for measuring startup progress.
When to Use This Skill
- Fundraising prep to know which metrics to highlight
- Board meetings to report on the right KPIs
- Strategic planning to set goals that matter
- Product decisions to understand what to optimize
- Diagnosing problems to find what's broken
- Benchmarking to know if your metrics are good
Methodology Foundation
| Aspect | Details | |--------|---------| | Source | A16Z (Andreessen Horowitz), YC (Y Combinator), SaaS metrics best practices | | Core Principle | "Measure what matters. Vanity metrics feel good but don't predict success. Focus on metrics that indicate real product-market fit and sustainable growth." | | Why This Matters | Wrong metrics lead to wrong decisions. Right metrics reveal truth about your business—good or bad—before it's too late to course-correct. |
What Claude Does vs What You Decide
| Claude Does | You Decide | |-------------|------------| | Structures analysis frameworks | Strategic priorities | | Synthesizes market data | Competitive positioning | | Identifies opportunities | Resource allocation | | Creates strategic options | Final strategy selection | | Suggests implementation approaches | Execution decisions |
What This Skill Does
- Identifies key metrics by stage - What to measure when
- Calculates core SaaS metrics - ARR, MRR, churn, LTV, CAC
- Benchmarks performance - Good vs. great vs. concerning
- Diagnoses metric problems - What poor metrics indicate
- Prepares investor-ready dashboards - What VCs want to see
- Prioritizes metric improvement - What to fix first
How to Use
Get Stage-Appropriate Metrics
I'm a [stage] startup in [industry].
What metrics should I be tracking?
What benchmarks should I aim for?Calculate Core Metrics
Help me calculate my SaaS metrics:
[Provide: MRR, customer count, churn data, acquisition costs]Diagnose Metric Problems
My metrics: [list metrics]
What's concerning? What should I focus on fixing?Instructions
Step 1: Understand Metrics by Stage
## Metrics Framework by Stage
### Pre-Seed (Validation Stage)
**Focus:** Is this a real problem worth solving?
| Metric | Why It Matters | Good Signal |
|--------|---------------|-------------|
| Problem interviews | Validate problem exists | 10+ interviews, 70%+ confirm |
| Solution interviews | Validate solution fits | 60%+ would use |
| LOIs/Waitlist | Real interest signal | Signed commitments |
| Engagement (if prototype) | People want to use it | Daily active usage |
**Not important yet:** Revenue, CAC, LTV, growth rate
---
### Seed (Product-Market Fit Stage)
**Focus:** Do people want this? Will they pay?
| Metric | Why It Matters | Good Signal |
|--------|---------------|-------------|
| **MRR/ARR** | Revenue traction | Any consistent revenue |
| **MoM Growth** | Trajectory | 15-20%+ MoM |
| **Retention** | PMF indicator | >80% monthly retention |
| **NPS** | Customer love | >50 NPS |
| **Engagement** | Product usage | DAU/MAU >20% |
**Emerging importance:** Early unit economics, CAC/LTV ratio
---
### Series A (Scale Stage)
**Focus:** Can this scale? Are unit economics viable?
| Metric | Why It Matters | Good Signal |
|--------|---------------|-------------|
| **ARR** | Revenue scale | $1-2M+ |
| **ARR Growth** | YoY trajectory | 3x YoY |
| **Net Revenue Retention** | Expansion + churn | >100% (ideally >120%) |
| **LTV/CAC** | Unit economics | >3:1 |
| **CAC Payback** | Efficiency | <18 months |
| **Gross Margin** | Business viability | >70% (SaaS) |
---
### Series B+ (Optimization Stage)
**Focus:** Efficiency and path to profitability
| Metric | Why It Matters | Good Signal |
|--------|---------------|-------------|
| **Magic Number** | Sales efficiency | >0.75 |
| **Rule of 40** | Growth + profitability | >40% |
| **Burn Multiple** | Cash efficiency | <2x |
| **Net Dollar Retention** | Account growth | >120% |
| **Quick Ratio** | Growth quality | >4 |Step 2: Calculate Core SaaS Metrics
## Metric Calculations
### Revenue Metrics
**MRR (Monthly Recurring Revenue):**
MRR = Sum of all recurring revenue per month
**ARR (Annual Recurring Revenue):**
ARR = MRR × 12
**MRR Components:**
- New MRR: Revenue from new customers
- Expansion MRR: Upgrades and cross-sells
- Contraction MRR: Downgrades
- Churned MRR: Lost customers
**Net New MRR:**
Net New MRR = New + Expansion - Contraction - Churned
---
### Growth Metrics
**MoM Growth Rate:**
Growth = (MRR this month - MRR last month) / MRR last month × 100
**YoY Growth Rate:**
YoY = (ARR this year - ARR last year) / ARR last year × 100
**CMGR (Compound Monthly Growth Rate):**
CMGR = (Ending MRR / Starting MRR)^(1/months) - 1
---
### Retention Metrics
**Gross Revenue Retention (GRR):**
GRR = (MRR - Churned MRR - Contraction MRR) / MRR × 100
Maximum: 100% (doesn't include expansion)
**Net Revenue Retention (NRR) / Net Dollar Retention (NDR):**
NRR = (MRR + Expansion - Contraction - Churned) / MRR × 100
Can be >100% (good!)
**Logo Churn:**
Logo Churn = Customers lost / Customers at start of period × 100
**Revenue Churn:**
Revenue Churn = Churned MRR / MRR at start of period × 100
---
### Unit Economics
**Customer Acquisition Cost (CAC):**
CAC = Total Sales & Marketing Spend / New Customers Acquired
**Lifetime Value (LTV):**
Simple: LTV = ARPU × Gross Margin × Customer Lifetime
With churn: LTV = (ARPU × Gross Margin) / Monthly Churn Rate
**LTV/CAC Ratio:**
LTV/CAC = LTV / CAC
Good: >3:1
**CAC Payback Period:**
Payback = CAC / (ARPU × Gross Margin)
Good: <18 months
---
### Efficiency Metrics
**Magic Number:**
Magic Number = Net New ARR this quarter / S&M Spend last quarter
>1.0 = Very efficient
0.75-1.0 = Good
<0.5 = Inefficient
**Rule of 40:**
Rule of 40 = Revenue Growth Rate + Profit Margin
>40% = Healthy balance of growth and profitability
**Burn Multiple:**
Burn Multiple = Net Burn / Net New ARR
<1x = Excellent
1-2x = Good
>2x = Concerning
**Quick Ratio:**
Quick Ratio = (New MRR + Expansion MRR) / (Churned MRR + Contraction MRR)
>4 = Excellent growth qualityStep 3: Benchmark Against Standards
## Metric Benchmarks
### SaaS Benchmarks by Stage
| Metric | Seed | Series A | Series B |
|--------|------|----------|----------|
| ARR | <$1M | $1-5M | $5-15M |
| MoM Growth | 15-25% | 10-15% | 5-10% |
| YoY Growth | 3x+ | 2-3x | 1.5-2x |
| Gross Margin | >60% | >70% | >75% |
| LTV/CAC | >3x | >3x | >4x |
| CAC Payback | <24 mo | <18 mo | <12 mo |
| NRR | >100% | >110% | >120% |
| Logo Churn | <5%/mo | <3%/mo | <2%/mo |
### What "Good" Looks Like by Company Type
**SMB SaaS (low touch):**
- Logo churn: 3-5% monthly
- NRR: 80-100%
- LTV/CAC: >3x
- CAC: <$1,000
**Mid-Market SaaS:**
- Logo churn: 1-2% monthly
- NRR: 100-120%
- LTV/CAC: >4x
- CAC: $5,000-20,000
**Enterprise SaaS:**
- Logo churn: <1% monthly
- NRR: 110-150%
- LTV/CAC: >5x
- CAC: $20,000-100,000+
### Engagement Benchmarks
| Metric | Consumer | B2B SaaS |
|--------|----------|----------|
| DAU/MAU | >20% | >40% |
| D1 Retention | >40% | >50% |
| D7 Retention | >20% | >30% |
| D30 Retention | >10% | >20% |Step 4: Diagnose Problems
## Metric Diagnosis Guide
### If MRR Growth is Slowing...
**Possible causes:**
1. Market saturation (ran out of easy customers)
2. Product-market fit weakening (competition, changing needs)
3. Sales inefficiency (declining magic number)
4. High churn eating new growth
**Diagnostic questions:**
- Is logo churn increasing?
- Is CAC increasing?
- Is conversion rate declining?
- Is expansion revenue flat?
---
### If Churn is High...
**Possible causes:**
1. Onboarding problems (never got value)
2. Product gaps (missing critical features)
3. Wrong customers (sold to people who shouldn't buy)
4. Comp