Customer Acquisition Cost (CAC) Calculator
Find out how much it really costs to win a new customer once you count every sales and marketing dollar. Use CAC to set budgets and protect your margins.
Calculate your CAC
CAC equals total sales and marketing cost divided by the number of new customers acquired in the same period. Include ad spend plus labor and tools, not only media.
How the CAC calculation works
Two inputs reveal the true cost of every new customer.
Add total sales and marketing cost
Include all ad spend along with sales and marketing salaries, software, and tools for the period. A media-only number understates your real CAC.
Enter new customers acquired
Count the new customers you won during the same period that the spending covers. Keep the time window consistent for an accurate result.
See your cost per customer
We divide total cost by new customers to show CAC, plus the cost to acquire 100 customers so you can plan campaigns at scale.
Frequently Asked Questions
Common questions about customer acquisition cost.
Keep more of every customer you acquire
Invoice My Clients helps you bill faster and get paid on time, so the customers you worked hard to win turn into real, collected revenue.
Related tools
Compare your CAC against lifetime value to judge health.