SaaS Financial Metrics Every Founder Should Track

SaaS Financial Metrics Every Founder Should Track

Running a SaaS business means swimming in data. But not all metrics are created equal. The founders who scale successfully are those who focus on the handful of numbers that actually predict growth, health, and sustainability.

Monthly Recurring Revenue (MRR)

MRR is the lifeblood of any SaaS company. It represents the predictable, normalized revenue you can expect each month from active subscriptions. Track not just total MRR but its components:

• New MRR: Revenue from new customers
• Expansion MRR: Upsells and plan upgrades
• Churned MRR: Revenue lost from cancellations
• Net New MRR: New + Expansion − Churned

A healthy SaaS business typically shows expansion MRR partially offsetting churn, a concept known as negative net churn.

Customer Acquisition Cost (CAC)

CAC tells you how much it costs to acquire a single paying customer. Calculate it by dividing total sales and marketing spend by the number of new customers in a given period. Many founders make the mistake of only counting ad spend — include salaries, tools, and overhead.

Customer Lifetime Value (LTV)

LTV estimates the total revenue a customer generates over their relationship with your product. The simplest formula is: LTV = ARPU ÷ Churn Rate. If your ARPU is €50 and monthly churn is 2%, your LTV is €2,500.

LTV:CAC Ratio

A ratio of 3:1 is generally considered healthy. Below 1:1 means you are losing money on every customer. Above 5:1 often means you are underinvesting in growth.

Churn Rate

Track both customer churn and revenue churn separately. A business with 2% monthly churn retains 78% of customers after a year. At 5% monthly churn, that drops to 54%.

Gross Margin

SaaS businesses can achieve 70–85% gross margins. COGS for SaaS includes hosting, support, and third-party APIs. If your gross margin is below 60%, investigate your infrastructure costs.

Burn Rate and Runway

Monthly burn is the net cash consumed each month. Runway = Cash in Bank ÷ Monthly Burn Rate. Most investors want to see at least 18 months of runway.

Net Revenue Retention (NRR)

An NRR above 100% means your existing customers are spending more over time. This is the metric that separates good SaaS businesses from great ones.

Payback Period

A payback period under 12 months is strong. Longer than 24 months puts pressure on your cash flow and runway.