What Is Customer Acquisition Cost?
Customer acquisition cost, or CAC, is the total amount you spend on marketing and sales to win one new customer. The basic formula is total acquisition costs divided by the number of new customers in the same period.
If you spend $6,000 on marketing and sales in a quarter and gain 40 new customers, your CAC is $150. A full calculation can include ad spend, agency or staff costs, software, and sales time.
Why Customer Acquisition Cost Matters for Northern Indiana & Michiana Businesses
CAC shows whether growth is profitable. A Warsaw HVAC company that spends $400 to win a customer who brings in thousands of dollars over many years is growing well, while spending more than a customer is worth signals a problem.
Knowing CAC also helps you decide how much to invest. When you understand what a new customer costs, you can plan budgets with confidence and compare channels on the cost of real customers rather than clicks or leads.
How Customer Acquisition Cost Works
- Gather costsAdd marketing spend, sales costs, tools, and agency fees for a period.
- Count new customersUse customers won in the same period.
- DivideTotal costs divided by new customers.
- Break it downCalculate CAC by channel or campaign when tracking allows.
- Compare with valueWeigh CAC against customer lifetime value.
A Local Example
A Goshen IT services company calculates its CAC for the year and finds it spends about $1,200 to win each new managed services client. Each client stays for several years on a monthly contract, so the company decides it can afford to invest more in marketing.
Breaking CAC down by channel shows referrals and LinkedIn bring the lowest CAC, so the company adds a structured referral program and expands its LinkedIn content.
Getting Started With Customer Acquisition Cost
Choose a period, such as the last quarter or year, and total all marketing and sales costs: ad spend, agency fees, software, and a share of staff time spent on sales and marketing.
Count the new customers won in that period, then divide. If your CRM tracks lead sources, calculate CAC by channel as well. Compare CAC with the average value of a customer, and review it every quarter to see whether your marketing is becoming more efficient.
Quick Wins to Improve Your Customer Acquisition Cost
- Track lead source for every new customer
- Follow up with leads quickly to raise close rates
- Build a referral program for happy customers
- Invest more in channels with the lowest CAC
- Compare CAC with customer lifetime value
What to Watch For
- Partial costs. Leaving out sales time or tools makes CAC look lower than it is.
- Long sales cycles. Customers may close in a later period than the spending that won them.
- Repeat customers. Count only new customers in CAC.
- Averages hide detail. CAC by channel reveals where to invest.
Customer Acquisition Cost FAQ
What is a good CAC?
A healthy CAC is well below the value a customer brings over time. Many businesses aim for lifetime value several times higher than CAC.
How is CAC different from cost per lead?
Cost per lead measures the cost to generate an inquiry. CAC measures the cost to win a paying customer.
How can I lower CAC?
Improve close rates, focus on efficient channels, encourage referrals, and nurture leads who are not ready yet.
Should CAC include salaries?
For a complete picture, include the share of salaries spent on marketing and sales.
How often should I calculate CAC?
Quarterly is a practical rhythm for most small businesses.
Put It to Work
Want to know exactly what each new customer costs and how to lower it? Riley will calculate your CAC and find the most efficient channels.
