✍️ Essay
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Free
Intermediate
Why we picked it
This is the piece nearly every other CAC explainer is quoting from, so go to the source. Skok walks through how CAC, lifetime value, and the payback period actually relate, and gives you concrete targets (aim for LTV at least 3x CAC, and try to recover CAC within 5 to 12 months) so you can set a number before you have any real data. It is dense, but it is the honest founder-level breakdown, not a hype piece.
From
For Entrepreneurs
by David Skok
- Your target is a ratio, not a single figure: lifetime value should be roughly 3x or more of what it costs to acquire a customer.
- Watch the payback period separately from the ratio: recovering CAC in under a year keeps you from bleeding cash while you grow.
- Before a single sale you can back into a target CAC from your expected margin and how long a customer is likely to stay.
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forentrepreneurs.com →
📄 Article
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Free
Beginner
Why we picked it
This is a focused, plain-language piece on the exact trap in the question: a low blended CAC that quietly counts customers you never paid to acquire (word of mouth, referrals, your own network). It gives a concrete worked example where blended reads 42 dollars but true paid CAC is 70, and shows how to isolate the paid number using CRM-attributed customers rather than ad-platform counts. A good starting point for pressure-testing whether your economics survive without the promo.
From
Eightx
by Matt Putra
Short read (10 to 12 min)
- Blended CAC divides total spend by every new customer including free channels, so a founder-led discount or your personal network can make the headline number look far better than the paid engine really is.
- To find your true paid CAC, divide full paid spend (media, agency, creative, affiliate) by customers acquired through paid channels, measured at your CRM.
- Report both numbers and never compare your blended CAC to a competitor's paid CAC, because the gap is where scaling ads later goes wrong.
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eightx.co →