CAC (Customer Acquisition Cost)
Customer Acquisition Cost (CAC) is the total sales and marketing spend required to win one new paying customer over a given period.
In depth
CAC is calculated by dividing all costs to acquire customers, including ad spend, salaries, and tooling, by the number of new customers gained in the same window. It matters because it sets the floor for sustainable growth: if it costs more to acquire a customer than that customer will ever pay you, the business loses money on every sale no matter how fast it scales. Tracking it by channel reveals where acquisition is efficient and where it quietly drains the budget.
A common pitfall is calculating it on raw leads rather than paying customers, which flatters the number and hides waste in poorly converting channels. In a quiz-funnel workflow, scorecard scoring lowers CAC by filtering out low-intent traffic before it reaches sales, so reps spend time on qualified buyers; the same ad budget then converts into more customers, pulling the per-customer cost down without spending an extra dollar.
Example in practice
Frequently asked questions
How do you calculate CAC?
Divide total sales and marketing costs for a period by the number of new paying customers acquired in that same period. Be sure to include salaries, ad spend, and tooling, not just media costs.
What is a good CAC?
There is no universal benchmark because it depends on your pricing and lifetime value. A widely used rule of thumb is an LTV-to-CAC ratio of 3:1 or higher, meaning each customer should return at least three times their acquisition cost.
How can lead qualification reduce CAC?
Qualifying leads with a scorecard quiz keeps low-intent prospects away from sales, raising close rates on the leads that remain. The same spend then produces more customers, which mathematically lowers the cost per acquired customer.