Accounting Customer Acquisition Cost (Per-Unit) Calculator FAQ

CAC means customer acquisition cost. It is the average included cost of gaining one new customer.

Per-unit means per new customer. The calculator divides total included acquisition costs by the number of new customers acquired.

Cost per lead divides spending by leads generated, while CAC divides included acquisition spending by customers actually acquired.

Yes. A monthly CAC can be useful when all included costs and the new-customer count relate to that same month.

Paid search, social, display, print, sponsorships, and other paid advertising may be included when they support acquisition and are handled consistently.

Commissions attributable to winning new customers can be included as part of acquisition-focused sales and marketing payroll or other acquisition costs.

Customer support is generally tracked separately unless it is directly and consistently treated as part of the process of acquiring new customers.

Returning or repeat customers are usually not counted as new customers. Use a consistent internal definition of new customer.

You can allocate a reasonable acquisition-related portion if the software supports both acquisition and other activities. Apply the allocation method consistently.

Using different periods can distort the average because the spending and customer results may not relate to the same activity.

CAC cannot be calculated by dividing by zero. Review the period, customer count, and spending separately rather than reporting a numeric CAC.

Costs may occur before customers are acquired, which can make short-period CAC volatile. A longer review period or consistent attribution approach may provide more context.

Yes, if costs and new-customer attribution can be assigned to each channel using a consistent method.

Not always. A lower CAC may be useful, but it should be considered alongside customer revenue, margin, retention, product mix, and growth objectives.

It means included acquisition costs increased faster than new-customer volume for the measured period. It does not identify the cause by itself.

Blended CAC includes all selected acquisition costs and all new customers, while channel CAC assigns costs and customers to individual channels.

Comparisons can be limited because businesses may use different cost categories, customer definitions, attribution methods, products, and sales cycles.