Calculate a blended acquisition cost across channels
Separate total acquisition spend from the platform’s attribution claims.
Agree on the cost boundary
A business spends $8,000 on media and $2,000 on attributable acquisition production. It records 250 verified new buyers. Blended acquisition cost is $40 when both costs are included, or $32 for media alone. Both can be useful if labeled.
Avoid adding overlapping channel buyers
A customer may appear in search and email attribution. Use a consistent first-order identity for the total and keep channel credit as a separate diagnostic. Quantify unmatched buyers before relying on a precise split.
Use the metric beside contribution
Compare blended CAC with first-order contribution and mature repeat performance. If spend falls while existing demand continues, blended CAC can improve temporarily. Record changes in acquisition mix and timing before concluding efficiency improved.
Try a related tool
Estimate what you can pay to acquire an order while reserving a desired contribution. Use consistent per-order inputs.
