Startup financial dashboard: the 12 KPIs that every CFO must follow
12 essential financial KPIs for startups: growth, acquisition, cash flow, profitability. Formulas, benchmarks and dashboards by our CFOs.
Co-founder and Fractional CFO
Contents
- Category 1 — Growth (3 KPIs)
- KPI 1 — MRR (Monthly Recurring Revenue)
- KPI 2 — Net New MRR
- KPI 3 — Monthly MRR growth rate
- Category 2 — Acquisition and retention (3 KPIs)
- KPI 4 — CAC (Customer Acquisition Cost)
- KPI 5 — LTV/CAC
- KPI 6 — NRR (Net Revenue Retention)
- Category 3 — Cash (3 KPIs)
- KPI 7 — Net burn rate
- KPI 8 — Runway
- KPI 9 — WCR / CA
- Category 4 — Profitability and efficiency (3 KPIs)
- KPI 10 — Gross margin
- KPI 11 — CAC Payback Period
- KPI 12 — Rule of 40
- Summary table
- Section — How to build your first dashboard
- Recommended tools
- Recommended service frequency
An effective financial dashboard is not measured by the number of indicators it contains, but by their relevance. An excess of metrics drowns out information; a deficit masks the warning signs.
This guide presents 12 KPIs (Key Performance Indicators) structured into 4 categories, with for each: the calculation formula, the sector benchmark, and the recommended monitoring frequency. These indicators are applicable to all SaaS startups and digital SMEs in the growth phase — and constitute the basis for managing a fractional CFO startup at Iter Advisors.
Category 1 — Growth (3 KPIs)
KPI 1 — MRR (Monthly Recurring Revenue)
The MRR is the monthly recurring revenue. It constitutes the fundamental metric of any subscription model business.
Formula: MRR = Σ (price of each active subscription / period in months)
Example: a customer paying €12,000 per year contributes €1,000 to the MRR. A customer paying €500 per month contributes €500.
| Phase | Target MRR |
|---|---|
| Pre-seed | 1 000 € – 5 000 € |
| Seed | 5 000 € – 50 000 € |
| Series A | 50 000 € – 200 000 € |
| Series B | 200 000 € – 500 000 € |
Tracking frequency: weekly (monthly minimum).
KPI 2 — Net New MRR
Net New MRR measures real growth in recurring revenue by incorporating losses.
Formula: Net New MRR = New MRR + Expansion MRR − Contraction MRR − Churned MRR
Vigilance thresholds:
- Net New MRR positive over 3 consecutive months: healthy growth
- Net New MRR negative: immediate alert (churn greater than acquisitions)
Tracking frequency: monthly.
KPI 3 — Monthly MRR growth rate
Formula: (MRR month N − MRR month N-1) / MRR month N-1 × 100
| Rate | Evaluation |
|---|---|
| > 15%/month | Excellent (doubling time < 5 months) |
| 10 % – 15 % | Very good |
| 5 % – 10 % | Good |
| 2 % – 5 % | Moderate |
| < 2 % | Alerting |
Tracking frequency: monthly.
Category 2 — Acquisition and retention (3 KPIs)
KPI 4 — CAC (Customer Acquisition Cost)
The CAC measures the total cost of acquiring a new customer.
Formula: CAC = (marketing spend + SDR/AE sales spend) / number of new customers
| Monthly ARPU | Target CAC |
|---|---|
| < 100 € | < 500 € |
| 100 € – 500 € | 1 000 € – 3 000 € |
| 500 € – 2 000 € | 3 000 € – 8 000 € |
| > 2 000 € | 8 000 € – 20 000 € |
Tracking frequency: monthly, by acquisition channel.
KPI 5 — LTV/CAC
The LTV/CAC ratio measures the return on investment of customer acquisition.
Formula: LTV/CAC = (ARPU × gross margin %) / (monthly turnover × CAC)
| Ratio | Evaluation |
|---|---|
| > 5 | Excellent |
| 3 – 5 | Healthy (market standard) |
| 1 – 3 | Fragile |
| < 1 | Not viable |
Tracking frequency: quarterly.
KPI 6 — NRR (Net Revenue Retention)
NRR measures the percentage of revenue retained from a cohort of customers, including expansion (upsell/cross-sell).
Formula: NRR = (MRR start of period + Expansion − Contraction − Churn) / MRR start of period × 100
| NRR | Evaluation |
|---|---|
| > 120 % | Excellent (organic growth) |
| 110 % – 120 % | Very good |
| 100 % – 110 % | Correct |
| < 100 % | Alerting (uncompensated churn) |
Tracking frequency: monthly.
Category 3 — Cash (3 KPIs)
KPI 7 — Net burn rate
The burn rate measures monthly net cash consumption.
Formula: Burn rate = total monthly expenses − monthly income received
| Runway | Area | Action |
|---|---|---|
| > 18 months | Green | Priority growth |
| 12 – 18 months | Yellow | Prepare the next lift |
| 6 – 12 months | Orange | Enable lifting or reduce costs |
| < 6 months | Red | Emergency plan |
Tracking frequency: weekly.
KPI 8 — Runway
Formula: Runway (months) = free cash flow / net burn rate
Venture capital rule: raise funds when the runway is 12 to 18 months. Never less than 9 months — the negotiation time with VCs is 3 to 6 months on average.
Tracking frequency: weekly.
KPI 9 — WCR / CA
The ratio BFR / CA measures the working capital requirement in relation to turnover.
Formula: WCR / CA = (Inventories + Customer receivables − Supplier debts) / Annual turnover × 100
| Sector | Target WCR/CA |
|---|---|
| SaaS (subscription) | -10 % à +5 % |
| D2C e-commerce | 10 % – 20 % |
| Industry | 20 % – 30 % |
| Services / Consulting | 8 % – 15 % |
Tracking frequency: monthly.
Category 4 — Profitability and efficiency (3 KPIs)
KPI 10 — Gross margin
Formula: Gross margin = (CA − Cost of sales) / CA × 100
| Gross margin | Evaluation |
|---|---|
| > 80 % | Excellent (pure SaaS) |
| 70 % – 80 % | Very good |
| 60 % – 70 % | Correct (SaaS with services) |
| < 60 % | To be improved |
Tracking frequency: monthly.
KPI 11 — CAC Payback Period
The CAC payback period measures the time to recover a customer's acquisition investment.
Formula: CAC Payback = CAC / (monthly ARPU × gross margin%)
| Delay | Evaluation |
|---|---|
| < 6 months | Excellent |
| 6 – 12 months | Very good |
| 12 – 18 months | Correct |
| > 18 months | Too long |
Tracking frequency: quarterly.
KPI 12 — Rule of 40
The Rule of 40 adds the growth rate and the margin EBITDA. It assesses the growth/profitability balance.
Formula: Rule of 40 = Annual turnover growth rate (%) + EBITDA margin (%)
| Score | Evaluation |
|---|---|
| > 40 % | Excellent (mature SaaS) |
| 20 % – 40 % | Good |
| < 20 % | To be improved |
Tracking frequency: quarterly.
Summary table
| KPIs | Formula | Frequency | Alert threshold |
|---|---|---|---|
| MRR | Σ (subscription prices / 12) | Weekly. | Stagnation 2 months |
| Net New MRR | New + Expansion − Churn | Mens. | Negative |
| MRR Growth | (N − N-1) / N-1 | Mens. | < 5 % |
| CAC | (Marketing + Sales) / New | Mens. | Increase > 20% |
| LTV/CAC | LTV / CAC | Trim. | < 3 |
| NRR | (Start + Exp − Churn) / Start | Mens. | < 100 % |
| Burn rate | Expenses − Income | Weekly. | Runway < 9 months |
| Runway | Cash / Burn | Weekly. | < 12 months |
| BFR/CA | WCR / Annual turnover | Mens. | > 25 % |
| Gross margin | (CA − COGS) / CA | Mens. | < 60 % |
| CAC Payback | CAC / (ARPU × margin) | Trim. | > 18 months |
| Rule of 40 | Growth + EBITDA margin | Trim. | < 20 % |
The CFO’s view
“The founders I support often want 25 KPIs from the start. I require them to start with 5. MRR, burn rate, runway, CAC, and churn. When these 5 are mastered, we add the other 7. An unread dashboard is a useless dashboard — no matter how beautiful it is. »
Section — How to build your first dashboard
Recommended tools
| Tool | Function | Price |
|---|---|---|
| Google Sheets | Basic dashboard | Free |
| Finthesis | Advanced reporting (connects Pennylane, Stripe) | On quote |
| Google Data Studio | Visual dashboard | Free |
| Concept | Database + dashboard | Free |
To entrust the construction of the dashboard and the monthly review of deviations, our outsourced management control links the indicators to the manager's decisions.
Recommended service frequency
| Format | Participants | Frequency | Duration |
|---|---|---|---|
| Individual review | CFO / DAF | Weekly | 30 mins |
| Management Committee | CEO + CFO + VPs | Monthly | 2h |
| Board | CEO + CFO + Investors | Quarterly | 4h |
FAQ
Which KPIs should we start with?
MRR, burn rate, runway, CAC, and churn. These 5 indicators cover 80% of the management needs of a Series A startup.
How often should they be updated?
MRR, burn rate, and runway: weekly. CAC, churn, and gross margin: monthly. LTV/CAC, NRR, and Rule of 40: quarterly.
Which tool to create a dashboard?
Google Sheets is enough to get you started. Finthesis or Google Data Studio are suitable for more sophisticated dashboards.
Does the Rule of 40 apply to all startups?
No. It is mainly relevant for mature B2B SaaS (Series B+). In the seed phase, the focus should be on MRR and CAC. A Fractional CFO builds the reporting and sets up these 12 KPIs for your team. → Set up my dashboard with a CFO
