💼 Blended CAC (Customer Acquisition Cost)

Blended CAC (Customer Acquisition Cost)#

Total acquisition spend divided by all customers acquired, across channels.

Important

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What it is#

CAC is the cost to acquire one new customer; Blended CAC is the average across all channels at once — paid and organic together, with no split by source. It is “blended” because it folds ad and campaign spend together with organic effort (SEO, referrals, inbound, brand) into one number.

Formula#

\[\text{Blended CAC} = \frac{\text{Total Sales \& Marketing Spend}}{\text{Total New Customers}},\]

counting all sales-and-marketing cost over a period against every new customer in that period, whatever the source.

Worked example#

With $100,000 of sales and marketing spend and 2,000 new customers in a month,

\[\text{Blended CAC} = \frac{100{,}000}{2{,}000} = 50 \text{ per customer}.\]

Why it’s useful#

It is a simple, high-level snapshot of all-in efficiency — easy to compute and track over time, and more honest than looking at ad spend alone.

Limitations#

It masks channel differences: paid search at $150 and organic referral at $10 can average to $50, hiding the inefficiency.
It is poor for optimisation — it doesn’t tell you which channel creates value.
It drifts as you scale paid: lean harder on ads and blended CAC rises even if nothing else changed.

Where it fits#

Use blended CAC for big-picture health, Paid and Organic CAC to separate bought from earned growth, Channel-Specific CAC to optimise, and always read CAC against LTV via the LTV:CAC ratio.

Theme: Business & Growth Analytics · All terminology

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Mind map — connected ideas

Paid CAC (Customer Acquisition Cost) · Organic CAC (Customer Acquisition Cost) · Channel-Specific CAC (Customer Acquisition Cost) · Fully Loaded CAC (Customer Acquisition Cost) · CAC (Customer Acquisition Cost) · LTV:CAC Ratio

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More in Business & Growth Analytics

CAC (Customer Acquisition Cost) · Cannibalization · Channel-Specific CAC (Customer Acquisition Cost) · Churn · Cohort · Cohort-Based LTV (Simple Version) · Conversion Rate (CR) · Cost-Per-Click (CPC) Models · Cross-Selling · CTR (Click-Through Rate) · Customer Lifetime · Customer Segmentation · D2C (Direct-to-Consumer) · FTEs