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Unit Economics · 12 July 2026 · 2 min

MarTech Unit Economics: 5 Metrics That Determine If You Scale or Collapse

Satyabrata Das

Satyabrata Das

Ex Group CFO · 56 entities · 18 countries

Key takeaways

CAC payback above 24 months = your acquisition model is unsustainable at current scale

Net Revenue Retention below 95% = you are leaking faster than you grow

LTV:CAC below 2:1 = every new customer makes you poorer

Churn above 25% annually = you have a product-market fit problem, not a sales problem

MarTech below 8% net margin means your unit economics are broken. You are selling software with a service cost structure. Here are the 5 numbers that tell you if you survive.

The Unit Economics Problem in MarTech

MarTech businesses face a unique financial challenge: they sell software subscriptions but deliver a service. The margin structure of a SaaS product and the cost structure of a services business collide inside the same P&L.

The 5 Unit Economics to Track

1. Customer Acquisition Cost (CAC). Total sales and marketing cost divided by new customers acquired. For MarTech in the €1M–€10M revenue range, healthy CAC payback is 12–18 months. Above 24 months, your acquisition model is unsustainable.

2. Gross Margin Per Customer. Revenue per customer minus delivery cost per customer.

3. Net Revenue Retention (NRR). Revenue from existing customers this year divided by revenue from the same customers last year. Healthy: above 110%. Stress: below 95%.

4. Churn Rate. Healthy: 5–15% annually. Stress: above 25%.

5. LTV:CAC Ratio. Lifetime value divided by customer acquisition cost. Healthy: above 3:1. Stress: below 2:1.

What To Do

Calculate these five metrics for your last 12 months. Identify which one is most at risk. Build a quarterly improvement plan focused on that single metric.


*Satyabrata Das provides CFO intelligence with commercial edge to agencies and consultancies. Book a free discovery call →*

Satyabrata Das

Satyabrata Das

Ex Group CFO of a listed marketing group. 56 entities, 18 countries. 29 years in finance. ACCA. CPA-K. CPA-A. Harvard Business School.

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