Most retail owners spend thousands on ads, promotions and outreach programs each month. But very few tell you what it costs to acquire each new customer. The marketing budget gets allocated, sales come through the door and as long as revenue looks decent, everyone assumes it’s all working as it should. This difference between what gets spent and what’s actually understood around these costs can quietly drain profit margins for months at a time before anyone picks up on the pattern.
Customer acquisition cost is one metric that changes how you view your business when you actually take the time to calculate it. You can see which marketing channels bring in real, profitable customers and which ones just drain your budget month after month, whether your pricing structure supports the growth you want or needs adjustment and if your store is ready for more volume or should focus on fundamentals first.
For retail businesses, customer acquisition costs can be hard to track with any accuracy. Customers walk in from everywhere – some come directly from the street, others click through from social media ads, a few respond to the email campaigns and plenty arrive because a friend told them about you. And seasonal fluctuations can really skew what would otherwise be steady data. Many owners take their total advertising spend and believe that the number represents their acquisition cost per customer. But it creates problems when they’re making decisions about hiring more staff, ordering inventory or opening a second location.
Here are the steps to calculate your customer acquisition cost!
Basic Formula and What Costs to Include
The formula is actually pretty simple to calculate. You just take your total marketing and sales costs from a given period and then you divide that number by the number of new customers you brought in during that same timeframe. When you finish the calculation, you’ll have the average cost it took to acquire each customer.
The harder part is to figure out what you should actually include as a customer acquisition cost. Ad spend is a no-brainer – that’s the money you put toward online ads, print campaigns, billboards and any other promotional channels you’re running. Your sales team costs belong in this bucket as well. Salaries or commissions paid to employees who close deals or work your sales floor to turn casual browsers into buyers should be part of your CAC total.
Any marketing or sales tools that you’re paying for should be included in this number. Email tools and customer relationship management systems are two common examples of this. Promotional costs also fall into this category – discounts or giveaways that you use to bring in new customers. Attribution software tends to get missed quite a bit. But it’s a legitimate expense if you use it to see where your customers are coming from.
Anything that helps keep your existing customers happy should be left out of this calculation. Loyalty rewards programs, customer appreciation emails and newsletters sent to customers who have already bought from you – these types of costs don’t belong in your CAC at all. CAC is meant to track the money you spend to bring in somebody who’s never been a customer before.
A scenario shows how this calculation works in practice. A clothing retailer sets aside $10,000 for their monthly marketing budget. This money goes toward Facebook ads, Instagram promotions and the wages for a couple of part-time sales associates who help close deals in the store. Over the course of that month, the retailer brings in 400 brand new customers through these combined activities. The $10,000 total spend divided by those 400 customers equals $25 per customer. What this number tells you is pretty simple – the business had to invest $25 to acquire each new customer who walked through their doors that month.
Businesses mess this calculation up all the time and it’s pretty easy to do. Including costs meant for customer retention or your day-to-day operations will make your CAC look way higher than it should. But leaving out costs like your software subscriptions will give you a number that’s artificially low. Either of these mistakes will make it hard for you to see what you’re actually spending to land each new customer.
Track Your CAC by Each Channel
We’ve covered the formula and walked through its moving parts, so by now it should make sense how everything fits together. The next step is to take what we’ve talked about and actually apply it to your business.
Most retailers are only tracking one big number around customer acquisition cost. The math is simple – take every dollar spent on marketing, divide it by the total number of new customers and that’s your CAC. It gives you a number to work with, which is definitely better than nothing. What it doesn’t tell you is what marketing work is actually responsible for bringing in those customers.
A better way is to track your cost per channel instead. Separate out your social ads, search ads, email campaigns, referral traffic and in-store promotions. Each one has its own cost structure and its own results, and they can change around quite a bit. Break them apart like this and you’ll be able to catch the performance gaps that can be massive.
Let’s say that you run Instagram ads and Google Ads at the same time. Instagram might bring in new customers at around $25 each, while Google costs you $45 per customer – that’s nearly double the price. The combined average between the two will hide that gap completely. With this data at your fingertips, the whole process of making decisions gets way less stressful and way easier. You’ll be able to move more of your budget toward the channels that are working well for you and scale back on the ones that just aren’t delivering the results you’re looking for. All that guessing goes away – the numbers are going to tell you right where your money should be going and which channels deserve more of your investment.
The channels also work on different timelines, and this timing piece is something to think about. An ad might convert someone right away, while another person might need a few weeks (or even longer) to finally make up their mind. Multiple tracking windows help you capture this delay and the variation in buying behavior. It makes sense to set up 30-day windows right alongside the 60-day and 90-day windows. Some channels are going to look expensive in the first month but they will pay off later as the customers come back. But the fast converters from other channels might never show up again after that first buy.
Everything changes when you move past that single average number. Channel-by-channel tracking lets you see what’s driving the results that matter and what’s burning through your budget without giving you anything in return.
CAC Costs Are Different Across Business Types
After you’ve gone through and calculated your customer acquisition cost, the next question on your mind is probably how it stacks up against other retailers in your space. Most business owners want some way to benchmark their numbers and see where they stand compared to the competition. But there isn’t a single universal number that’s going to work for every business out there.
Customer acquisition costs in e-commerce can swing quite a bit – anywhere from $10 to $200+ per customer, and this varies with the type of business you run. Most of this depends on the type of products you sell and who your target audience is. Fashion and apparel retailers usually fall somewhere in the $20 to $50 per customer range. If your acquisition costs sit outside of that window, it doesn’t necessarily mean something’s wrong with your marketing.
The acquisition costs from other businesses won’t help you much unless you know the full story of how they run their business and what they sell. A luxury furniture brand will spend a lot more to acquire each customer than a fast fashion retailer would, and that makes sense. The furniture brand has much higher average order values and way better profit margins to work with, which means they can afford to put a lot more money toward customer acquisition and still stay profitable.
What matters more is whether your acquisition cost actually makes sense for your particular business model. You’ll have to see if you can sustain it with your price points and the profit margins you work with. You should also consider whether your customers come back to buy again. A higher acquisition cost can work just fine if you sell premium products or if your customers buy from you every couple of months.
Don’t stress too much if you don’t match what your competitors spend. What you actually need to know is whether you can bring in new customers at the cost you have now and still turn a profit. If your margins are already tight and the cost per new customer continues to climb higher, watch those numbers closely. But if your customers come back and buy from you multiple times, you can usually afford to spend more to bring in new customers.
How Customer Value Beats Your Acquisition Cost
You can calculate your customer acquisition cost down to the exact penny if you want to. That number is worth knowing. But it won’t actually tell you if you’re profitable or losing money. Whether you’re profitable depends on how that acquisition cost compares to the total revenue each customer brings in over the entire time they do business with you.
The lifetime value ratio is a metric that tells you if you’re actually making money on each new customer. Most businesses shoot for a ratio of around 3 to 1. That means if a single customer ends up spending $150 with you over the time they shop with you, you can afford to spend about $50 to bring them in. This ratio matters because it’s the only way to know if your customer acquisition strategy is actually turning a profit or if you’re just wasting your budget on campaigns that never make their money back.
Context matters quite a bit when you’re looking at these numbers. A premium retailer that sells high-end products can spend $200 just to acquire each customer, and they can still be extremely profitable with that approach. Their customers make bigger purchases on average and they keep coming back over time. The relationship usually lasts much longer, and it ends up bringing in far more revenue over the lifetime of that customer.
The value comes from comparing these numbers together instead of looking at your acquisition cost all by itself. A $75 cost per customer sounds expensive. But each customer spends around $300 with your business over the next 2 years. The initial cost makes a lot more sense when you look at it that way. Compare that to a $15 acquisition cost, which sounds great on paper. But most of the customers only make a single purchase and never come back, so you don’t get much value out of that low number.
Different types of retailers will see wildly different ratios. A luxury boutique and a discount store will have different numbers from one another, and both can be perfectly healthy businesses as long as the lifetime value of each customer covers what it cost to acquire them, with a little bit of room left over for profit. A strong ratio has the confidence to spend more on acquisition because you already know that the return will justify the cost. That means you can pay for better advertising campaigns or more personalized outreach without having to stress over every dollar you’re putting into it.
Privacy Updates Are Hurting Your Data
Customer tracking has become way messier over the past few years, and it’s not happening for just one reason. Apple pushed out some big privacy updates that limited how much data apps share about what users do on their devices. Web browsers also began to block third-party cookies around this same time (those are the small trackers that would follow visitors from website to website all across the internet).
It’s become way harder to tell which ad or campaign actually brought a customer to your business. Go back just a few years, and the path was pretty simple – a customer would see your Instagram ad, click the link and buy something. But that connection tends to fall apart somewhere in the middle, and it’s nearly impossible to track where customers actually come from.
Your CAC calculations depend on accurate data about what’s working and what isn’t. Seeing only part of the picture skews everything. Say you’re spending a budget across three different channels. But you can only track conversions from one of them. Your CAC numbers won’t show what’s happening with your ad spend. One channel could look like it costs you three times more per customer than it does, just because the tracking isn’t there.
Smaller retailers have always relied on tracking tools that were easy to use and reliable right out of the box. Those tools did just what they needed and didn’t take much technical expertise or a complicated setup. The challenge now is that most of these same tracking tools miss big chunks of the customer path. The problem is, your budget probably hasn’t magically increased to line up with these new demands, and you’re most likely still working with the same systems you’ve used for years.
Multi-touch attribution models do a much better job at filling in those gaps. Instead of putting full credit on that final click right before a customer buys, these models spread the credit out across a few different touchpoints in the customer path. Maybe a customer sees one of your Facebook ads first, then they search for your store name a few days later, and finally they click through from an email you sent. All three of these steps actually contributed to making that sale happen.
First-party data has become a lot more important over the past few years. It’s the information that your customers give directly to you – emails from newsletter signups, loyalty program memberships and account info. One of the best aspects of first-party data is that you own it. Privacy policies can change all they want. But they can’t strip away the data that you collected straight from your own customers.
Perfect tracking probably isn’t coming back, at least not anytime soon. A much sharper view of your true CAC is still possible though – you just need to take what your internal systems already show you and pair that with better attribution methods.
Convert Your Foot Traffic Into Extra Revenue
This data pays off when you actually start to apply it to your day-to-day decisions. You might find that one channel brings in customers for half the price of another channel, or maybe your lifetime value numbers are strong enough that you can afford to spend more money up front to acquire new customers. This gives you a way to experiment with different strategies, move your budget around to where it’s working best and stop wasting money on the channels that just aren’t taking you anywhere. Retail is always changing and when you know what it costs to bring in a customer to your store, you can adapt fast and stay focused on what actually drives growth.
Once you analyze the return on investment for every dollar spent in your retail business, opportunities you might have missed before become much easier to find. ecoATM kiosks were built to help create these kinds of opportunities for retail partners. We’ve processed millions of devices through our kiosks and we continue to drive steady foot traffic to the stores that host them. Maybe your priority is bringing in more customers through the door, or adding a new revenue source to your bottom line or showing your customers that environmental responsibility is something your company actually cares about. These goals are worth talking about with our team. Get in touch with us to find out how an ecoATM kiosk could fit your particular business needs or check out our wholesale device options if you need reliable refurbished technology for your operations. We help you extract genuine value from every person who walks into your store.
