Acquisition Cost
Acquisition cost relates the expenses incurred to the number of new customers acquired within a defined scope. In referral programmes, it includes rewards as well as attributable operating costs. Validation, cancellations, and the quality of acquired customers influence the interpretation of the result.
A concrete example
A fictitious operation costs €12,000 and brings in 120 new validated customers: its average acquisition cost is €100 per customer.
A point to consider
Dividing by leads instead of customers changes the metric. Include reward, media, and processing costs defined in your scope.
Compare customers of comparable quality
Specify when a customer is considered acquired: validated contract, confirmed purchase, or other business event. Then compare the acquisition cost to the margin and retention of these customers. A campaign that is less expensive per sign-up may become more expensive per retained customer. Analyze new customers and returning customers through the referral channel separately.
Questions to ask your team
- Were cancellations removed from the number of acquired customers?
- Do the compared channels include the same cost categories?



