Customer Acquisition Cost (CAC)

Customer Acquisition Cost (CAC) is the fully-loaded sales and marketing cost to acquire one new paying customer — the foundation of every SaaS unit-economics model.

What is Customer Acquisition Cost (CAC)?

CAC is (total sales + marketing spend in a period) ÷ (new customers acquired in that period). "Fully loaded" means including salaries, tools, ad spend, content production, agency fees — anything that contributes to net-new acquisition.

CAC payback period — months for a customer's gross margin to recoup their CAC — is often the more useful operating metric, especially in PLG and usage-based businesses.

Why it matters

Below LTV by a healthy multiple = sustainable growth; above = burning capital
The denominator in the LTV/CAC ratio that VCs and CFOs ask about every quarter
Tells you which channels can scale and which can't

Benchmarks (rough SaaS)

LTV/CAC > 3 is the broad health bar
CAC payback under 12 months for SMB SaaS, under 24 for enterprise
Outbound CAC tends to beat paid CAC for high-ACV products

How to lower CAC

Tighter ICP targeting → higher conversion at every step
Compounding inbound (SEO, partnerships) reduces blended paid CAC over time
Outbound automation lowers the human-cost component of CAC dramatically

How TexAu helps

Replacing manual SDR list-building and enrichment with TexAu workflows compresses the people-cost portion of CAC — one operator + a stack of automations can produce the prospecting throughput of a 5-person team.