Free Customer Acquisition Cost Calculator
Calculate blended or channel-specific CAC, then compare current acquisition economics with a target cost and customer-volume scenario.
Calculate Acquisition Cost
Keep the cost, customer and reporting scope consistent.
Enter costs and new customers to calculate CAC.
Customer acquisition cost
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How to Calculate Customer Acquisition Cost
Customer acquisition cost measures how much your business spends to win one new customer. The formula is simple, but the definition of cost and customer attribution must remain consistent for the metric to support real decisions.
1. Set a reporting period and scope
Choose a month, quarter or year and decide whether you need blended CAC or a channel view. Every cost and customer in the calculation must belong to that same period and scope.
2. Include the full acquisition cost
Media alone produces a media CAC, not a fully loaded CAC. Add the relevant sales and marketing labor, commissions, software, creative, agency, event and promotional costs when your decision requires a complete view.
3. Count new customers consistently
Use new customers rather than leads, opportunities or repeat buyers. For channel CAC, follow one attribution rule and acknowledge that channels often assist each other. Compare like with like when evaluating trends.
4. Connect CAC to unit economics
A lower CAC is not automatically better if it produces low-value or high-churn customers. Review CAC with gross margin, lifetime value, retention and payback period before increasing or reducing investment.
Customer Acquisition Cost Formula
| Marketing | Sales | Customers | CAC |
|---|---|---|---|
| $75,000 | $45,000 | 300 | $400 |
Customer Acquisition Cost FAQs
How do you calculate customer acquisition cost?
Add the marketing and sales costs attributable to acquiring customers during a period, then divide that total by the number of new customers acquired in the same period.
What costs should be included in CAC?
Include media, agency, software, creative, events, relevant salaries and commissions, and other costs used to attract, qualify and close new customers. Apply one consistent definition across periods.
What is the difference between blended and channel CAC?
Blended CAC combines acquisition costs and customers across the business. Channel CAC isolates spend and customers attributed to one channel, such as paid search, events or partner marketing.
What is a good CAC?
A good CAC depends on gross margin, retention, payback tolerance and customer lifetime value. Many businesses evaluate the LTV-to-CAC ratio and CAC payback alongside the raw cost.
Should existing-customer expansion be included?
Usually no. Standard CAC measures new-logo acquisition. Track expansion or upsell costs separately unless your organization uses a clearly documented broader definition.