What is CAC?
Customer Acquisition Cost – the total cost to acquire one new customer.
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How CAC Works
CAC, or Customer Acquisition Cost, represents the total investment required to acquire one new customer. It includes all marketing and sales expenses—ad spend, salaries, tools, content creation, and overhead—divided by the number of new customers acquired.
CAC is more comprehensive than CPA because it accounts for all acquisition costs, not just paid media. The LTV:CAC ratio is the north star metric for growth sustainability. A ratio below 3:1 often means you're overspending on acquisition; above 5:1 might indicate you're underspending and leaving growth on the table. Track CAC by channel to identify your most efficient acquisition sources and allocate budget accordingly.
Frequently Asked Questions
What is CAC?
Customer Acquisition Cost – the total cost to acquire one new customer.
CAC, or Customer Acquisition Cost, represents the total investment required to acquire one new customer. It includes all marketing and sales expenses—ad spend, salaries, tools, content creation, and overhead—divided by the number of new customers acquired.
What does CAC stand for?
Why is CAC important?
CAC provides the complete picture of customer acquisition economics by including all costs—not just media spend but also salaries, tools, content production, and sales resources. Understanding fully-loaded CAC in relation to LTV determines whether your business model is sustainable and scalable. Investors scrutinize CAC trends closely because rising CAC often signals market saturation, increased competition, or weakening product-market fit.
How do you calculate CAC?
CAC = Total Sales & Marketing Costs ÷ Number of New Customers Acquired. For example, if you spent $100,000 on all sales and marketing expenses in a quarter and acquired 500 customers, your CAC is $100,000 ÷ 500 = $200 per customer.