Customer Acquisition Cost: What It Costs to Win a Local Delivery Customer

Customer acquisition cost is what you spend, on average, to turn a stranger into a paying customer. Add up everything you spent on sales and marketing in a period, divide by the number of new customers you got, and that’s your CAC.

The number matters because it’s the price you’re paying for growth, and because it’s the one figure that tells you whether growing faster will make you more money or less. A business with a broken CAC doesn’t have a marketing problem that scale will fix. It has a business model that gets worse the more it works.

The Bottom Line

• CAC = total sales and marketing spend ÷ new customers acquired in the same period.
• Include everything: ad spend, salaries, agency fees, software, content and commissions. Leaving costs out is the most common way businesses flatter the number.
• A blended CAC hides everything useful. The same business can acquire at $30 through referrals and $200 through paid ads, and only the channel-level figure tells you where to put the next dollar.
• Judge CAC against contribution margin per order and repeat rate, not against an industry average. A $90 CAC is excellent for a customer who orders weekly and ruinous for one who orders once.

The customer acquisition cost formula

Total sales and marketing costs ÷ New customers acquired = CAC

Spend $9,000 in a quarter and win 100 new customers, and your CAC is $90.

The arithmetic is trivial. What determines whether the answer means anything is what you put in the numerator, and this is where most calculations quietly go wrong. A complete CAC includes:

• Ad spend across every paid channel.
• Salaries for anyone doing sales or marketing, including the portion of your own time if you do it yourself.
• Agency and freelancer fees, including design, copy and media buying.
• Software used for marketing: email platforms, CRM, scheduling, analytics.
• Content and creative production, including photography.
• Sales commissions and referral bonuses.
• Discounts and promotional offers used specifically to win first orders.

That last one gets skipped almost universally. A 25% off first-order coupon is acquisition spend, because you gave up real margin to get that customer. If a $60 first order goes out at $45, the $15 belongs in your CAC calculation as surely as a Facebook ad does.

Getting the period right matters too. If your sales cycle runs long, this month’s customers came from last quarter’s spend, and dividing simultaneous figures produces a number that’s wrong in both directions. Match the spend to the customers it actually produced.

Why blended CAC hides the answer

A single company-wide CAC averages your best channel and your worst into one figure that describes neither.

Channel-level costs diverge enormously. Your overall CAC might sit at $150 while Google Ads delivers customers at $200, organic search brings them in at $75, and referrals cost $30. The blended number tells you to keep doing everything you’re currently doing. The channel numbers tell you exactly where the next dollar should go.

Calculate it per channel. Take each channel’s spend, divide by the customers attributable to it, and rank them. For a local business this usually needs nothing more sophisticated than asking new customers how they found you and writing the answer down. A field on the order form beats an attribution platform for most operations at this size.

The pattern that shows up repeatedly: referrals and word of mouth are the cheapest acquisition channel almost everywhere, and they’re a function of how well you serve existing customers rather than of marketing spend. Which means the work that keeps customers coming back is also, indirectly, your cheapest acquisition channel.

What a healthy customer acquisition cost looks like

There’s no universal benchmark, and chasing industry averages is a poor use of attention. Two tests are worth far more.

Test one: the LTV:CAC ratio. Compare what a customer is worth over their lifetime to what you paid to get them. A 3:1 ratio is the widely cited marker of a sustainable business. Below 1:1 you’re paying more for customers than they’re worth. Much above 5:1 usually means you’re underinvesting in growth rather than running a brilliant operation.

Test two: payback period. How many orders does it take for a customer to repay their own acquisition cost? Divide CAC by your contribution margin per order. A $90 CAC against a $27 contribution margin means a customer must place four orders before they’ve broken even for you.

Test two is the one that matters most for a local delivery business, because it’s answerable with numbers you already have. It also converts an abstract marketing figure into a concrete question: does your average customer actually place four orders? If your repeat rate says most order twice and disappear, that $90 CAC is losing money on most of the customers it buys.

Contribution margin per order is doing a lot of work in that calculation, and it needs to be a fully-loaded figure: price minus materials, minus direct labor, minus the cost of delivering it. Getting the production side of that number right is what keeps the payback test honest.

How CAC changes your break-even point

Most break-even calculations treat marketing as a flat monthly overhead, which works only if your marketing spend really is flat.

It usually isn’t. When spend scales with growth, every new customer arrives carrying an acquisition cost that has to be recovered before they contribute anything toward fixed overhead. Grow faster and you push your own break-even point further out, which is a counterintuitive result and explains a lot of businesses that got busier and poorer at the same time.

The way through it is to run the break-even calculation twice: once treating marketing as fixed overhead, and once with acquisition cost loaded into your variable cost per order. The gap between the two answers is the cost of your growth, stated in orders. If that gap is large, the cheapest available improvement is usually not a better ad campaign. It’s getting existing customers to order more often, which costs nothing to acquire.

Bringing customer acquisition cost down

Four levers actually move the number, roughly in order of how quickly they work.

Kill your worst channel. Once you have channel-level CAC, the bottom performer is usually costing multiples of your best one. Reallocating that budget is the fastest available improvement and requires no new capability.

Improve conversion rather than traffic. CAC is spend divided by customers, so raising the conversion rate lowers CAC without spending a dollar more. For local delivery businesses the usual leaks are the same few things: delivery areas and minimums that aren’t stated clearly, checkout that asks for too much, and no obvious answer to “can you actually deliver to me?”

Build referral into the routine. Referred customers are consistently the cheapest to acquire and tend to order more reliably. Most small businesses never ask, then treat word of mouth as weather rather than as a channel they can influence.

Tighten your geography. This one is specific to businesses that deliver. Acquiring customers outside a sensible delivery radius costs the same as acquiring nearby ones and produces orders that cost far more to fulfill, as long single-stop runs with no route density. Concentrating acquisition spend where you already deliver lowers CAC and cost per delivery at the same time, because the new customer lands on a route you’re already running.

That last point connects acquisition to operations more tightly than most businesses realize. A dense delivery footprint makes marketing cheaper, because the same spend buys customers you can serve profitably, and it makes the fixed cost of your vehicles and drivers spread across more stops per run.

Frequently asked questions

What is a good customer acquisition cost?

The one your margin and repeat rate can support. The practical test is payback period: divide CAC by contribution margin per order to get the number of orders a customer needs to place before they’re profitable, then check that against how many orders your customers actually place. If the second number is smaller than the first, your CAC is too high regardless of what the industry average says.

Should I include salaries in customer acquisition cost?

Yes. Anyone spending meaningful time on sales or marketing belongs in the calculation, including you. Excluding labor is the single most common reason CAC figures look better than reality, and it can easily halve the number and make an unprofitable channel look fine.

How is CAC different from cost per lead?

Cost per lead measures what you pay for an inquiry. CAC measures what you pay for a customer who actually bought. The gap between them is your conversion rate, and a channel with cheap leads and poor conversion can easily have worse CAC than one with expensive leads that close.

How often should I recalculate CAC?

Quarterly for the overall figure, and per channel whenever you change spending meaningfully. Monthly can be noisy for a small business, because a handful of customers either way swings the number enough to prompt decisions you’ll regret.

Start with the number you already have

You don’t need attribution software to begin. Take last quarter’s total sales and marketing spend, count the new customers, and divide. That single figure is usually enough to tell you whether you have a problem.

Then run the payback test against your contribution margin. If a new customer needs four orders to pay for themselves and your typical customer places two, you’ve found the most important thing on your to-do list — and it probably isn’t a marketing task. It’s either a pricing question, a retention question, or a question about what your fixed overhead is doing to your margin per order. The acquisition number is where you notice the problem, not always where you fix it.