Customer Acquisition Cost (CAC)
The total cost of marketing and sales efforts required to acquire a single new client.
Definition
Customer Acquisition Cost (CAC) is calculated by dividing total marketing and sales expenses by the number of new clients acquired during the same period. For service businesses, this includes advertising spend, marketing tools, referral bonuses, staff time on sales activities, and any promotional discounts. CAC is most meaningful when compared to Customer Lifetime Value (CLV) — a healthy business maintains a CLV:CAC ratio of at least 3:1. Understanding CAC helps businesses allocate marketing budgets effectively and evaluate which channels deliver the most cost-efficient client acquisition.
Examples of Customer Acquisition Cost (CAC)
A salon spends $2,000/month on marketing and acquires 40 new clients — $50 CAC
A dental practice spends $5,000 on Google Ads and gets 10 new patients — $500 CAC
A home service company gets 20 referral clients at $0 CAC vs. $200 from paid ads
A fitness studio offers a free trial that costs $30 to fulfill and converts 50% — $60 CAC
Why Customer Acquisition Cost (CAC) Matters
If you don't know your CAC, you can't know whether your marketing is profitable. When CAC exceeds CLV, you're losing money on every new client. Understanding CAC by channel helps you double down on what works and cut what doesn't. Referral and organic channels typically have the lowest CAC.
How SchedulingKit Handles Customer Acquisition Cost (CAC)
SchedulingKit tracks where bookings originate (website, social, referral, direct link) so you can calculate CAC by channel. Automated follow-ups and referral prompts help reduce CAC by turning existing clients into acquisition channels.
Try SchedulingKit FreeCommon Questions About Customer Acquisition Cost (CAC)
What is a good CAC for service businesses?
It varies widely by industry. Salons average $30-70, dental practices $200-500, home services $100-300, and consultants $50-200. The key is maintaining a CLV:CAC ratio of 3:1 or better.
How do I reduce CAC?
Improve booking conversion (more clients from existing traffic), encourage referrals (lowest CAC channel), optimize ad targeting, use remarketing, and invest in SEO for organic acquisition.
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