Average CAC by Industry: Why Benchmarks Fail Italian SMEs

You’re paying €180 to win each new customer, and you want to know whether that’s too much. You google “average CAC by industry”, land on a neat table with a row for your sector and a single hard number, and breathe out. Hold that breath. Nobody has measured customer acquisition cost across Italian businesses and published it through an official source. The tables floating around are American figures run through a translator, with no stated sample and no stated method. What they tell you is how much a debt-funded Silicon Valley SaaS company spends, which has nothing to do with what your business can afford.

The good news is that you can stop guessing anyway. You can work out the number you need yourself. Start from your margin and your average order value, and you get the maximum CAC your business can carry. Below you’ll find the formula, four worked examples by sector, and a way to read a benchmark without getting burned.

Why “the average CAC for your industry” is a number that doesn’t exist

Try this. Pick any table of “CAC by industry in Italy” and click through to the source. Almost every time, there isn’t one. When there is, it points to another guide, which points to yet another, and the trail ends at a US dataset on venture-backed SaaS companies. Nobody says how many businesses were measured, in which year, or what counted as an “acquired customer”. It’s a hall of mirrors: each page copies the last, and nobody ever counted anything.

There’s a structural reason for this. Acquisition cost depends on variables that make an industry average close to useless. How crowded your market is, which channels you use, how long your sales cycle runs and how much the market demands you invest all move CAC more than the sector label does. Knowing the typical costs in your market helps you judge whether your CAC is reasonable, but that judgement comes from your own numbers. A row in an anonymous table can’t make it for you ¹.

Two cosmetics e-commerce brands can report CACs five times apart and both be right. One counts ad spend only. The other adds marketing salaries, software, agency fees and the first-order discount. Same sector, same product, numbers you can’t compare. Before you hold your CAC up against anyone else’s, you need to know what’s inside both figures. You almost never do, so the comparison tells you nothing.

5 questions to ask a benchmark before you believe it

When you find a figure and feel the itch to use it as a yardstick, run it through this filter. If it fails a single question, bin it.

1. How many companies was it measured on? An “average e-commerce CAC of €70” drawn from twelve brands is an anecdote. Without a sample size, the figure might as well not exist.
2. What year, and what country? A 2021 US figure on customers paying in dollars says nothing about your Italian market in 2026. Cost per click has moved, competition has moved, and so has the currency.
3. Blended or paid? Blended CAC divides all new customers by all marketing spend, organic included. Paid CAC isolates customers who came in through paid channels. The paid figure is almost always two to three times the blended one. Comparing them is like comparing temperatures in Celsius and Fahrenheit.
4. What goes into the cost? Just the ad budget, or people, software, agencies and first-purchase incentives too? The scope alone can shift the number by 300%.
5. What counts as an “acquired customer”? Someone who leaves an email, someone who places a first order, someone who becomes a repeat buyer? Each definition gives you a different CAC.

None of the guides ranking at the top of search answers these five questions. That’s their blind spot, and your chance to avoid making the same mistake.

This is where AI saves you half an hour of suspicious reading. Paste the text of a benchmark article into an assistant like Claude and give it an interrogation prompt:

“You’re a sceptical analyst. Read the text below and tell me, for every CAC figure it cites: (a) is the sample size given? (b) are the year and country given? (c) does it say whether the CAC is blended or paid? (d) does it state what’s included in the cost? (e) does it define what an ‘acquired customer’ means? For any figure that fails at least three of these questions, write ‘not usable’ and explain why. Don’t be nice about it.”

Fifteen seconds later you find out that 90% of the numbers you were about to rely on fail the test.

The benchmark that really counts is your own

Stop asking what everyone else spends and work out what you can spend. You can have that number today, using data you already hold. The logic rests on customer lifetime value, or CLV, which estimates the net profit a customer generates over the whole relationship. You get it by multiplying the average transaction value by the average number of transactions over the length of the relationship. A customer who spends €100 per order and buys twice a year for five years is worth €1,000 in revenue over time ².

The profitability rule is simple: acquisition cost has to stay below the value that customer will bring you ². That gives you your ceiling. The calculation runs on margin, the only share that actually stays in your pocket once variable costs are paid. Here’s the ceiling formula.

Maximum sustainable CAC = (Contribution margin per customer × Expected purchases over the customer lifetime) ÷ 3

Dividing by 3 builds in a safety cushion, so you keep some margin even after covering fixed costs and surprises. It’s the working version of the LTV/CAC ratio, one of the core acquisition metrics, and it aims for three euros of margin for every euro you spend acquiring.

That’s why a €400 CAC is a bargain for an accountant and suicide for a skincare e-commerce shop. What changes everything is the contribution margin per customer and how many times that customer will buy. Here are four worked cases.

Sector	Value per purchase	Contribution margin	Expected purchases over lifetime	Total margin	Maximum sustainable CAC
Cosmetics e-commerce	€45	40% (€18)	8 (4/year × 2 years)	€144	~€48
Accountant / professional services	€1,500/year	60% (€900)	3 (3 years)	€2,700	~€900
Courses / education	€400	70% (€280)	1.5	€420	~€140
B2B SaaS	€80/month	80% (€64)	24 (2 years)	€1,536	~€512

The values in each column are placeholders for your own, and none of them is an average measured on the market. The method, though, holds up and works the same every time. Plug in your real average order value, your real margin, your real repeat-purchase rate, and you get a threshold that describes your business and nobody else’s. If your current CAC sits below that line, sleep easy. If it’s above, you have a problem no industry benchmark would ever have flagged.

You don’t need to build this in a spreadsheet by hand. A prompt does the heavy lifting. In an AI assistant, or in a Google Sheet connected to a model, write:

“Help me work out my maximum sustainable CAC. Here are the four numbers to use: average order value [€X], contribution margin as a percentage [Y%], average number of purchases a customer makes over their lifetime [Z], safety divisor 3. Calculate, in order, the margin per purchase, the total lifetime margin and the maximum sustainable CAC. Then compare it with my current CAC of [€W] and tell me in one sentence whether I’m healthy, borderline or losing money, with the percentage gap.”

The number you get is worth more than any table, because it’s the only one calibrated to your own economics.

Your average ticket decides how much you can spend

CLV makes one link obvious straight away. The revenue each customer generates over time, measured as average revenue per user, sets the ceiling on what it makes sense to spend to acquire them. A mid-sized SaaS company considers €500 to €5,000 a month per customer a good average, a streaming platform settles for €10-20 a month, and Spotify recorded just €4.62 in average revenue per user in 2024 ³. At €4.62 a head you can’t spend €30 to sign up a subscriber; the maths never works. At €2,000 a month for a software subscription, a CAC of a few thousand euros pays for itself fast.

The same relationship gives you a time yardstick. For B2C businesses, a CAC payback period of twelve months or less is considered a good benchmark ⁴. If your margin earns back what you spent on acquisition within a year, the model holds. If it takes three years, you’re funding growth out of your own pocket, and every extra euro of advertising digs the hole deeper. Payback is another of the acquisition metrics worth tracking, as a second check after the margin threshold.

For e-commerce, where average order value varies a lot between categories, the Italian source to start from for ticket data is the Osservatorio eCommerce B2c run by Politecnico di Milano with Netcomm, which publishes real average order values for the Italian market. That gives you the “value per purchase” for the formula, and takes you from a made-up industry average to a number calculated for your category. The same method applies to e-commerce CAC, the online-specific case.

The sectors no table covers: professional services and education

The tables in circulation are built around SaaS and e-commerce, because they come from American datasets built around those two worlds. Anyone selling consulting, professional services or training is left out, and for Italian SMEs that’s exactly where most businesses sit.

In professional services, the sales cycle is long and a client is worth a lot over time, often billed annually and for several years. A consultancy with a €1,500 recurring annual fee and a high contribution margin can carry a CAC that would sink ten e-commerce shops. The opposite trap is assuming a high CAC is always healthy. If your renewal rate is low and clients stay for a single year, total margin collapses and your threshold goes with it. Before you spend, measure how many years a client actually stays with you, regardless of how long you’d like them to.

In education and courses, the issue is repeat purchase. A one-off €400 course produces a modest total margin, because the customer buys once and disappears. If you sell a catalogue of courses, with the same student buying several or paying a subscription, you multiply expected purchases and raise your sustainable CAC. The strongest lever here is increasing how often the same customer comes back. The top half of the formula grows, and you can afford to spend more upfront.

In both cases, the channel you acquire through moves the numbers as much as the sector does. A word-of-mouth lead costs next to nothing; one from a paid campaign on a contested keyword can cost ten times the average. CAC by channel shifts your final cost as much as industry does, and inbound marketing is how you bring it down by working on organic.

What to do on Monday morning

It comes down to three concrete moves. First, stop hunting for “the number for my industry” and pull together your four real figures: average order value, contribution margin, expected lifetime purchases and current CAC. Second, work out your threshold with the ceiling formula and compare it with what you’re actually spending. Third, if you’ve got an external benchmark in hand, put it through the five questions before giving it an ounce of authority.

The advantage of this approach is that it doesn’t go stale. American CAC tables age every year, while your threshold takes five minutes to recalculate whenever your margin or order value changes. You’re working from your own numbers, a long way from someone else’s averages.

If you’d like the other practical tools in our acquisition metrics series, with ready-made formulas and worked examples by sector, sign up to the Marketing Hackers newsletter. We send one repeatable process at a time, with no filler theory.

Sources

Further reading

• CAC nel SaaS B2B per PMI: benchmark, formula e best practice

Footnotes

1. Cos’è il Costo di Acquisizione del Cliente (CAC)?. it.semrush.com ↩

2. Che cos’è il valore del cliente nel tempo (CLV)?. stripe.com ↩ ↩²

3. Che cos’è il ricavo medio per utente (RMPU)?. stripe.com ↩

4. Che cos’è il periodo di ammortamento del costo … stripe.com ↩