What is Customer Acquisition Cost?

Problem: Using monthly costs with quarterly customer counts
Impact: 200–300% CAC calculation errors
Solution: Always align cost and acquisition periods

The Complete CAC Definition

Customer Acquisition Cost (CAC) = Total Sales & Marketing Costs ÷ Number of New Customers Acquired

But this simple formula only scratches the surface. True CAC includes all expenses associated with acquiring customers not just ad spend. Understanding this metric is crucial for e-commerce analytics, profitability forecasting, and Shopify analytics performance optimization.