Customer Acquisition Cost, le prix de votre croissance

Customer Acquisition Cost: An Overview

The Customer Acquisition Cost (CAC) is a critical metric in SaaS models, platforms, or subscription-based businesses. It illustrates the cost associated with acquiring a new customer. A high CAC can make growth unsustainable, whereas a low CAC might indicate underinvestment or poor targeting. For investors, CAC provides insights into commercial efficiency, the profitability of acquisition channels, and market positioning stability.

CAC = Marketing and Sales Expenses / Number of New Customers Acquired

Paid advertising (SEA, social, display) Agency fees and content production costs Marketing tools and CRM expenses Salaries, bonuses, and commissions of sales teams Events, trade shows, or prospecting operations

CAC is often calculated on a monthly or quarterly basis and analyzed by channel or segment.

Strategic Importance of CAC for Investors

A controlled CAC indicates precise targeting, a well-positioned product, and an efficient sales process. Conversely, a rising CAC without an increase in conversion or ARR signals potential challenges.

Customer Profitability Calculation (LTV/CAC)

CAC is a key component of the LTV/CAC ratio, essential for assessing the sustainability of recurring revenue models.

A company that can consistently acquire new customers with a stable CAC demonstrates an ability to scale without cost inflation.

Funding rounds often rely on the formula CAC x Target Customer Volume → ARR → Expected Dilution. An unstable CAC complicates forecasting.

Model Expected LTV/CAC Ratio Target CAC Payback

SaaS B2B (mid-market) ≥ 3 < 12 months

SaaS Enterprise ≥ 5 12–18 months

SaaS B2C / Subscription ≥ 2 < 6 months

Marketplace Platforms ≥ 3 6–12 months

An LTV/CAC < 1 indicates that each customer is destroying value. A CAC payback > 18 months is generally considered risky without strong sector justification.

Blended CAC : Overall average across all channels. CAC by Segment : More precise, identifies profitable targets. CAC by Channel : Assesses the effectiveness of each acquisition lever.

Investors now expect a precise breakdown of CAC by persona, channel, and sales cycle.

– Prioritize high-conversion, high-LTV segments Accelerate the Sales Cycle

– Automate follow-ups and nurturing Increase Funnel Conversion

– Conduct continuous A/B testing on acquisition channels Enhance Retention from Acquisition

– More active contractual engagement or onboarding

D’après FrenchWeb.