Customer Acquisition Cost (CAC)

Measures how much it costs to acquire one customer.

Product Management
IH InterviewHood
Definition

CAC = Total sales and marketing spend ÷ Number of new customers.

Definition

CAC = Total sales and marketing spend ÷ Number of new customers.

Customer Acquisition Cost (CAC) measures the total spend on marketing and sales to acquire a single new customer. It helps assess the efficiency and scalability of go-to-market strategies. CAC is a critical metric when paired with LTV to evaluate business sustainability.

Lower CAC with high LTV leads to stronger unit economics.

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