How it is used in a coaching business

Coaching businesses usually understate CAC by counting only ad spend. A high-ticket sale involves setters, closers, commissions, a CRM, a funnel builder, video production and often the founder's time on sales calls. All of it belongs in the number. When the full cost is counted, the case for keeping a client who has already been paid for becomes obvious.

Cost lineInclude
Paid ads and agency feesYes
Setter and closer pay and commissionsYes
Sales software and funnel toolsYes
Content and creative productionYes, the share aimed at acquisition
Delivery staff and platformsNo, that is fulfillment cost

CAC is the front end's number. The back end cannot lower it, but it can make it matter less: every renewal and resell is revenue with a CAC of close to zero, which pulls the blended cost per dollar earned down without touching the ad account.