Ever wondered how much it truly costs to bring in a new customer? You're in the right place.
Customer Acquisition Cost (CAC) is a critical metric for any business owner aiming to grow without overspending on marketing. It measures the total expense to acquire one new customer. The good news? You can lower it strategically without sacrificing results.
We've helped countless retailers optimize their operations through our expertise in POS systems and customer management. Here are three proven strategies:
Let's dive in.
Your CAC is the total cost your business incurs to attract a new customer, including all marketing and sales expenses.

CAC is calculated by dividing total marketing and sales costs by the number of new customers acquired in a given period. The formula:

For example, if you spent $5,000 on marketing and sales in October and gained 1,000 new customers (first-time visitors who made a purchase), your CAC is $5 per customer.
Total marketing and sales expenses: $5,000
New customers: 1,000
CAC: $5
Next, compare this to your Average Transaction Value (ATV). If your POS reports show an ATV below $5, you're losing money per sale. Aim for ATV well above CAC for profitability.
If CAC exceeds ATV, it's time to act. Drawing from years of working with retailers, here are actionable steps.
Minimize purchase barriers to drive more sales. Make it effortless for customers to find and buy—both online and in-store.
Friction like long checkout lines kills sales. Irisys research shows U.S. customers abandon queues after just six minutes. Forbes contributor Barbara Thau urges retailers to "banish queuing once and for all."
A cloud-based POS eliminates traditional lines, enabling sales from anywhere with any payment method. Cash? Direct to the register—but cash use is declining.
To lift ATV, optimize merchandising and POS displays. For more, see Lightspeed's expert-curated guide: How to Increase Retail Sales – 11 Tips.

Attract free traffic by optimizing for local search:
Focus on nearby customers—they're primed to visit if discovery is seamless. Our step-by-step guides for GMB, Facebook, and Instagram setup can bring in customers at zero cost.
Stock what customers want, deliver personalized service, and watch repeat visits soar. This builds Customer Lifetime Value (CLV)—total revenue from a customer over time.
ATV is the short view; CLV is the big picture. Target a 3:1 CLV-to-CAC ratio for optimal returns.
Achieve it with:
Loyalty Programs
Reward repeat purchases with points for exclusive perks. This boosts visits and spend—a win for CLV. See also: Will your customers buy from you tomorrow?
Referral Programs
Satisfied customers are your best marketers. 77% of buyers trust friend recommendations. Reward referrals with loyalty points—authentic growth without big ad spends.
Customer Retention
Retaining customers is 25x cheaper than acquiring new ones. Calculate your rate:

Benefits (backed by HBR and American Express):
See also: 12 Tips to Retain Customers and Boost Sales
Start inside: Delight existing customers to spark word-of-mouth evangelism. Happy shoppers refer friends, slashing acquisition needs.
Layer on loyalty and referrals to grow CLV toward that 3:1 ideal. It all stems from satisfaction—no heavy marketing required.