Blended CAC

You're spending on LinkedIn, a podcast, and referrals. Which channel is actually paying off? If you don't know your cost to acquire a client, you're guessing. Blended CAC (customer acquisition cost) is the average cost to acquire one new client across all channels—ads, content, referrals, events, sales time. It's the number that tells you how efficient your growth spend is overall.

Same revenue, different efficiency. Two consultants each add 4 new clients this quarter. One spent $8k on marketing and 40 hours on sales (worth ~$6k at their rate) = $14k for 4 clients = $3,500 blended CAC. The other spent $2k and 20 hours = $3,500 total = $875 per client. Blended CAC shows you the true cost of growth. When you know it, you can double down on what works and cut what doesn't.

Why it matters

Pricing and profitability. If your blended CAC is $2k and your average first-year profit per client is $5k, you have room. If CAC is $4k and first-year profit is $3k, you're losing money on acquisition. Knowing blended CAC helps you decide when to raise prices, when to invest in marketing, and which clients are worth pursuing.

Channel mix. Blended CAC hides which channels are cheap or expensive. Track CAC by channel when you can (e.g. referral vs paid vs organic). Often referral marketing has the lowest CAC; paid ads the highest. Use blended as the overall health number and channel CAC to optimize.

Scaling decisions. If you want to 2x clients, you need to know what 2x acquisition will cost. Blended CAC × target new clients = acquisition budget. Without it, you're scaling blind.

How to use it

1. Calculate total acquisition cost. Sum everything that goes into winning new clients: ad spend, tools, content production, your time and your team's time on sales and marketing. Convert time to cost (e.g. 20 hours × your effective rate). Do this for a defined period (e.g. last quarter).

2. Divide by new clients. Total acquisition cost ÷ number of new clients in that period = blended CAC. Even an approximate number (e.g. $2,500 per client) is better than none.

3. Compare to lifetime value and CAC by channel. Rule of thumb: LTV should be at least 3× CAC (see LTV:CAC ratio). Use blended CAC for the big picture; use CAC and channel-level data to improve.

Calculate your blended CAC

Enter spend per channel for the period (e.g. last quarter). Total is summed automatically.

Meta / social adsGoogle PPCReferrals / organicContent & toolsOtherNew clients (same period)Target new clients next period (optional)

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