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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