Why blended CAC beats paid-only CAC for benchmarking
Paid-only CAC pretends the marketing brand spend and the sales-team activity didn't help any organic customers convert. Reality: most "organic" customers were influenced by something — content, an event, a partner, a referral from a paid-channel customer. Blended CAC honors that by dividing the full acquisition cost by all customers acquired.
How to read the organic ratio
- Under 15%: over-dependent on paid. A change to ad costs (iOS privacy, platform consolidation, ad fatigue) is an existential risk.
- 15–30%: normal for series A–B with active paid programs.
- 30–50%: healthy — the brand and product are pulling weight.
- 50–70%: exceptional. Often signals under-investment in paid (a healthy under-investment, but reconsider whether to push spend).
- Above 70%: almost always either a niche dominant brand or insufficient measurement — check your attribution.
When NOT to use blended
For ROAS comparison across channels, blended CAC obscures the marginal economics. For "should we cut Meta?" use channel-specific. For "are we growing efficiently?" use blended.
