MOST D2C BRANDS CALCULATE CAC WRONG
Dividing total ad spend by total orders (including repeat purchases) understates true CAC by 30–60%. True CAC = total acquisition spend ÷ new customers only. If you had 400 orders and 150 were repeat buyers, your denominator is 250.
BLENDED CAC IS YOUR REAL NUMBER
In-platform CAC from Meta or Google uses that platform's attribution. Blended CAC — total spend ÷ all new customers — reflects actual unit economics. For most brands, blended CAC runs 30–50% higher than Meta reports.
WHAT'S INSIDE — PREVIEW
01
CAC = Total marketing spend ÷ New customers acquired. Not total orders — new customers only.
Core formula · New customers only
02
Blended CAC: Total acquisition spend ÷ total new customers. More accurate than per-channel.
Blended CAC · Multi-channel
03
CAC by channel: How to split Meta, Google, organic, referral, and influencer correctly.
Channel attribution · Split method
04
Break-even CAC: Gross margin per order × payback period target.
Break-even · Payback period
05
Benchmarks: Fashion ($35–65), Beauty ($40–80), Supplements ($25–55), Home ($60–120).
D2C benchmarks · Vertical averages
06
CAC trend: How to track CAC week-over-week and spot degradation early.
Trend tracking · Degradation signals
07
Payback period: CAC ÷ gross margin per customer per month.
Payback period · Cash flow
08
CAC reduction: 6 highest-ROI ways to reduce CAC without cutting spend.
CAC reduction · Efficiency tactics