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◈ Finance & Economics·1 min·Updated Mar 11, 2026

What is CAC (Customer Acquisition Cost)?

Customer Acquisition Cost

Quick Answer

Customer Acquisition Cost (CAC) is the total expense a business incurs to acquire a new customer. This includes marketing expenses, sales costs, and any other costs associated with attracting new clients.

Overview

Customer Acquisition Cost, often abbreviated as CAC, is a critical metric for businesses, especially startups. It represents the total cost of acquiring a new customer, which can include advertising, marketing, and sales expenses. Understanding CAC helps businesses evaluate the effectiveness of their marketing strategies and budget allocation. In practical terms, if a company spends $1,000 on marketing and gains 10 new customers, the CAC would be $100. This means the business spent $100 to acquire each customer. For startups, keeping CAC low while maximizing customer lifetime value is essential for sustainability and growth. CAC is particularly important in the context of venture capital. Investors often look at this metric to assess a startup's growth potential and profitability. A startup with a high CAC might struggle to attract investment, while one with a low CAC and high customer retention can be more appealing to venture capitalists.

Frequently Asked Questions

To calculate CAC, divide the total costs associated with acquiring customers (like marketing and sales expenses) by the number of new customers gained during a specific period. This gives you a clear picture of how much it costs to bring in each new customer.
CAC is crucial for startups because it helps them understand their marketing efficiency and customer profitability. A low CAC indicates that a startup can grow sustainably, while a high CAC could signal potential financial issues.
A good CAC varies by industry, but generally, businesses aim for a CAC that is significantly lower than the customer lifetime value (CLV). This balance ensures that the costs of acquiring customers do not exceed the revenue generated from them over time.