Pre-product KPIs
When you have no revenue, you’re measuring signal — is this product creating genuine value for the people using it? Four metrics that matter before the first paying customer:
Weekly active users (WAU)
Before revenue, engagement is the only real signal. WAU tells you whether people are returning — the only thing that matters before monetisation. Day-1 or Day-7 retention is even better if you can track it.
Waitlist conversion rate
If you're pre-launch, how many people who hear about the product sign up? And of those, how many complete onboarding when they get access? Each handoff is a conversion you should be measuring.
NPS (Net Promoter Score)
Ask 10 users. You need to understand whether your early adopters love the product or just tolerate it. An NPS below 30 pre-product/market fit means you have a product problem. An NPS above 50 with any retention means you have something.
Retention (Day-7, Day-30)
The single hardest metric to fake. Users who come back after 7 days found real value. Track it from the first cohort, even if n=20. The earlier you build this habit, the more valuable your data is when you're raising.
Early-stage KPIs ($0–$1M ARR)
Once you’re generating revenue, these six metrics are the ones every seed-stage investor will ask about. Know them, track them weekly, and have at least 6 months of history.
MRR (Monthly Recurring Revenue)
BENCHMARK: Benchmark varies — focus on trajectoryFormula: Sum of all monthly subscription revenue
MoM growth rate
BENCHMARK: 10-15% MoM is exceptional at seed. 5-7% is solid.Formula: (MRR this month - MRR last month) / MRR last month × 100
Gross churn rate
BENCHMARK: Under 2% monthly. Over 3% is a structural problem.Formula: MRR lost to cancellations / MRR at start of period × 100
CAC (Customer Acquisition Cost)
BENCHMARK: Less important than LTV/CAC ratioFormula: Total sales & marketing spend / number of new customers acquired
LTV/CAC ratio
BENCHMARK: 3:1 minimum. 5:1+ is healthy for early stage.Formula: (Average contract value × gross margin) / (churn rate × CAC)
Runway
BENCHMARK: Under 12 months: raise or cut. 18+ months: execute.Formula: Cash in bank / monthly net burn
Growth-stage KPIs ($1M–$10M ARR)
At Series A and beyond, you carry all the early-stage metrics plus these. The questions shift from “is this growing?” to “is this growing efficiently?”
NRR / NDR (Net Revenue Retention)
BENCHMARK: 100% = flat. 110%+ = growth from existing customers alone. 120%+ = best in class.Formula: (Starting MRR + expansion - contraction - churn) / Starting MRR × 100
Payback period
BENCHMARK: Under 12 months for SMB. Under 18 months for enterprise.Formula: CAC / (Monthly revenue per customer × gross margin %)
Burn multiple
BENCHMARK: Under 1x is excellent. 1-1.5x is good. 2x+ needs explanation.Formula: Net burn / net new ARR
ARR (Annual Recurring Revenue)
BENCHMARK: The headline metric for Series A+ fundraisingFormula: MRR × 12
Quick ratio
BENCHMARK: 4+ is strong. Under 2 suggests you're leaking faster than you're filling.Formula: (New MRR + expansion MRR) / (contraction MRR + churn MRR)
Comprehensive KPI reference table
| KPI | Formula | Measures | What's Good | What's Bad |
|---|---|---|---|---|
| MRR | Sum of monthly subscriptions | Revenue momentum | 10%+ MoM growth at seed | Flat or declining 3+ months |
| MoM Growth | (MRR₂ - MRR₁) / MRR₁ × 100 | Growth velocity | 10-15%+ monthly | Under 3% consistently |
| Gross Churn | Churned MRR / Opening MRR × 100 | Product retention | Under 2% monthly | Over 3% monthly |
| NRR | (Start + expansion - churn) / Start × 100 | Net revenue health | 110%+ | Under 90% |
| CAC | S&M spend / new customers | Acquisition efficiency | Trending down over time | Rising without explanation |
| LTV/CAC | LTV / CAC | Unit economics | 3:1 minimum, 5:1+ healthy | Under 2:1 |
| Payback Period | CAC / (Rev/customer × GM%) | Cash efficiency | Under 12 months | Over 24 months |
| Burn Multiple | Net burn / net new ARR | Capital efficiency | Under 1x | Over 2x |
| Runway | Cash / monthly burn | Survival horizon | 18+ months | Under 12 months |
The one metric that matters at each stage
Every stage has a single metric that, if you optimise for it correctly, pulls everything else forward. This doesn’t mean ignoring the others — it means knowing which number you should be able to recite in your sleep.
Pre-product / Waitlist
Day-7 retention
Before you have revenue, retention is the only signal that matters. Everything else is noise.
Pre-revenue ($0 MRR)
Time to first paid customer
Validation that the product is worth paying for. Not pilot, not LOI — paying customer.
Early revenue ($0-100k ARR)
MoM MRR growth rate
Velocity is what investors are buying at seed. Are you compounding?
Finding PMF ($100k-$500k ARR)
Gross churn rate
High growth with high churn is a leaky bucket. Churn tells you if you've found product-market fit or just good salespeople.
Post-PMF ($500k-$2M ARR)
NRR (Net Revenue Retention)
If NRR is 110%+, your existing customers are growing the business for you. This is the metric that defines your Series A story.
Growth ($2M+ ARR)
Burn multiple
Capital efficiency becomes the dominant question. How much are you burning to generate each pound of new ARR?
BoardBrief
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Generate Your Board Report Free →Vanity metrics vs real metrics
Six metrics that founders put in pitch decks and investor updates that experienced investors immediately discount. What to track instead:
Total registered users
Weekly active users (WAU) or daily active users (DAU). Registered ≠ active. Investors know this.
Gross revenue (incl. refunds/credits)
Net revenue. Show refunds and credits explicitly — investors will ask.
Pipeline value
Closed ARR. Pipeline is opinion; closed deals are fact. Weighted pipeline is acceptable at Series A+.
Social media followers
Referral conversion rate, organic trial starts, content-driven signups. Followers don't pay rent.
App downloads
Day-7 retention rate, WAU/MAU ratio. Downloads that don't convert to active users are a vanity stat.
Press mentions / PR coverage
Direct traffic growth, branded search volume. Coverage that doesn't move a metric isn't a business result.
Frequently asked questions
How many KPIs should a startup track?
Five to seven core metrics, reviewed weekly. The problem with tracking 20 metrics isn't the data — it's that you don't know which five actually matter, so you track everything and understand nothing. At each stage, there are 2-3 metrics that determine whether the business is working. Identify those and track them obsessively. Track everything else monthly for context.
When should a startup start tracking KPIs formally?
Day one. Not because you'll have meaningful data on day one, but because the habit and infrastructure matters. Set up basic tracking before you have your first customer. The founders who present clean, historical metric data at seed stage are the ones who raised quickly — not because the numbers were good, but because the rigour signalled something about how they run the business.
What KPIs do VCs ask about in Series A meetings?
NRR, CAC payback period, gross margin, and MoM growth over the last 6-12 months. They also care deeply about churn cohort analysis — not just aggregate churn, but how churn differs by cohort, segment, and acquisition channel. If you can't answer "what's the churn rate of customers acquired through paid vs organic?" you haven't done the analysis.
Is ARR or MRR more important?
MRR for operational decisions (burn rate, runway, month-to-month trend). ARR for fundraising conversations (easier benchmark against VC return models). Both matter. Track MRR monthly, report ARR in investor conversations. Be explicit about the difference — some founders conflate annualised monthly run rate with actual annual contract value, and investors catch it.
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