Marketing in a Minute – Episode 15 | Ahmed Moaaz

CAC = total sales and marketing acquisition costs ÷ new customers. Keep it comfortably below the value a customer contributes over time.

What is CAC?

CAC stands for Customer Acquisition Cost. It answers a simple but important question: how much do you spend on average to get a new customer to buy for the first time?

CAC = total sales and marketing acquisition spend for a period ÷ new customers acquired during the same period.

For example, you spent EGP 30,000 on advertising, marketing staff and content during a month and acquired 150 new customers. CAC = 30,000 ÷ 150 = EGP 200 per customer.

Watch the denominator: new customers only. An existing customer returning for a second purchase is not a newly acquired customer and should not be counted again.

Why does this number matter?

It is one half of a business’s basic economic equation: what you pay to acquire a customer needs to be comfortably below what that customer contributes. A business paying EGP 200 for a customer who generates only EGP 150 in lifetime contribution is losing money on that relationship, however large its sales become. Knowing acquisition cost gives you a clearer view of the cost of growth.

Investors ask for this metric because it helps distinguish sustainable growth from growth purchased at a loss that will only become obvious later.

What belongs in acquisition spend?

Include the relevant costs of bringing in new customers during the period:

• Advertising across all platforms.
• Marketing salaries and agency or freelancer fees allocated to the period.
• Content production, including photography, design and writing.
• Acquisition-related marketing tools and subscriptions.
• First-customer discounts: a “15% off your first order” coupon has a real economic cost and should be accounted for consistently.

For a quick daily indicator, you can calculate a simplified media-only version. Just recognize that it is lower than a fully loaded calculation and label it clearly.

A worked example

A store spent EGP 20,000 on ads, EGP 6,000 as the month’s share of a marketing manager’s pay, EGP 3,000 on photography and design, and EGP 1,000 on tools. Total spend was EGP 30,000, and the store acquired 120 new customers.

Fully loaded CAC = 30,000 ÷ 120 = EGP 250. The media-only version = 20,000 ÷ 120 = approximately EGP 167. The fully loaded figure is 50% higher than the media-only figure. Agree internally on which definition each report uses so comparisons stay consistent from month to month.

How should you judge your CAC?

CAC alone is not enough. Compare it with customer value:

• First-order contribution: If the first order contributes EGP 300 before acquisition cost and CAC is EGP 250, there is a positive remainder on the first transaction.
• Lifetime value (LTV): The next episode explores customer value over time. A frequently used planning rule is lifetime contribution of at least three times acquisition cost, though the appropriate target depends on the model and risks.
• Your own history: CAC often rises as you expand because the easiest customers are reached first. A gradual increase can be normal; a sudden jump needs investigation.

Why might CAC rise suddenly?

• Audience saturation: You have reached many of the most interested people, so each additional customer costs more.
• Greater auction competition: Seasons such as Ramadan and White Friday can raise advertising prices.
• Worn-out creative: The same design and copy have been running for months and the audience no longer pays attention.
• A website problem: Slow loading or a checkout fault reduces conversion and raises acquisition cost even when the ad has not changed.

How can you reduce CAC?

• Improve conversion: Better product pages and checkout can reduce acquisition cost without changing the advertising budget.
• Refresh creative: Keep testing images and headlines. A successful ad still has a working life and may eventually need replacing.
• Build compounding channels: Content, SEO and customer email can reduce dependence on paid acquisition over time. Their production and operating costs still belong in a complete calculation.
• Encourage referrals: A satisfied customer introducing a friend in return for a small reward can be an efficient acquisition route.
• Examine channel performance: Split CAC by channel. One or two channels may be bringing in a large share of customers at lower cost.

Common mistakes when calculating CAC

• Dividing by all orders: Orders include repeat purchases, making the number look lower. Divide by newly acquired customers instead.
• Ignoring promotional discounts: First-order coupons reduce the economics just as spend does. Record them consistently, without double-counting a discount already reflected in net revenue.
• Mixing periods: One month’s spend divided by another month’s customers is not a comparable period calculation. Use matching periods or a deliberately defined acquisition cohort.
• Mixing paid and blended definitions: Some new customers arrive through referrals or organic search. Divide paid acquisition spend by customers attributable to paid channels when calculating paid CAC, and use all relevant costs and all new customers for blended CAC. Keep the two separate.

How CAC connects with your other metrics

CAC links three topics in this series. Break-even economics tell you what you can afford on a single order. Lifetime value helps establish what you can afford to acquire the customer over the relationship. Payback period shows how long it takes to recover the acquisition cost. Read all three together when deciding how quickly to grow.

Summary

CAC is the price of bringing in a new customer. Calculate it monthly with a clear, complete cost definition. Compare it with customer contribution rather than judging it in isolation, and track its direction over time. Knowing the cost of acquisition helps you decide how far you can expand and when to improve the system before adding more spend.

Keep following Marketing in a Minute: one marketing concept per episode. Have a question about this metric? Send it on WhatsApp.