Customer Acquisition Cost (CAC) Calculator
Enter what you spent and what you got. We compute CAC, cost per lead, revenue, gross profit, and whether you're above or below your break-even.
How this works
CAC = total ad spend ÷ new customers. A campaign is profitable when CAC is at or below your gross profit per customer (customer value × margin).
Example
Spending $3,000 to get 12 customers at $500 each with 50% margin gives a $250 CAC vs. $250 break-even — right at the line. A better close rate or lower CPL puts you into profit.
FAQs
Should CAC include labor?
For a fair number, include all costs required to make the campaign run — ad spend, tools, agency/employee time. For channel comparison, spend-only is fine.
What if my sales cycle is long?
Track CAC on a rolling 90-day window and pair it with lifetime value, not first-purchase revenue.
Answer a short assessment to get a personalized marketing plan for your business.