Customer Acquisition Cost (CAC)
Customer Acquisition Cost (CAC) is the total cost of winning one new paying client - including time, tools, ad spend, and any other resources invested in the sales and marketing process.
CAC = total acquisition costs ÷ number of new clients acquired in the same period. For LinkedIn-driven businesses where the primary acquisition cost is time rather than ad spend, calculating CAC requires honestly valuing the hours spent on content creation, DM outreach, discovery calls, and follow-up.
LinkedIn-native acquisition strategies typically have a delayed but compounding CAC curve: the first 6–12 months have a high effective CAC as content builds slowly, but once a library of content generates consistent inbound leads, the marginal CAC per new client drops sharply. A founder spending 4 hours/week on LinkedIn content who charges $5K/month per client: if one post per quarter drives a new client, the content cost (at $150/hr) is $240 per quarter per client - very favorable versus paid acquisition.
The LTV:CAC ratio is the health metric: for sustainable growth, LTV should be at least 3× CAC. If a client is worth $30K in lifetime revenue, paying up to $10K to acquire them is sustainable. Most LinkedIn-native B2B services operate at LTV:CAC ratios of 5:1 to 10:1 because organic acquisition cost is so low once the content system is running.
Related terms
- Lifetime Value (LTV)Lifetime Value (LTV) is the total revenue a single client generates over the entire duration of the relationship - from first payment to last.
- Pipeline VelocityPipeline velocity is how quickly leads move through a sales funnel from awareness to close. measured in average days from first touch to signed deal.
- Closing RateClosing rate is the percentage of qualified sales conversations (discovery calls, proposals, or presentations) that result in a signed contract or payment - a core metric for sales process health.
See customer acquisition cost (cac) in practice
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