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What Does It Actually Cost
You to Get One Customer?

All your marketing spend, broken down per converted paying customer. Pinpoint what's profitable and scale with confidence.

You're running ads and perhaps paying a sales team too. This calculator shows how much it costs, on average, to win one paying customer — then helps you understand whether that acquisition is sustainable.

1 Quick CAC
$
2 Payback & Margin
$
3 Full Economics
Unit Economics Dashboard
ESTIMATED CAC
$50.00
Cost to acquire one customer
LTV ESTIMATE
$0.00
LTV:CAC RATIO
0.0:1
Enter your numbers to see your customer acquisition cost, payback timeline, and lifetime value sustainability.

What Is CAC, in Simple Words?

Customer Acquisition Cost (CAC) is the total cost of sales and marketing efforts required to acquire one new paying customer for a business over a given time period.

Think of it like this: if you spend $10,000 on ads and sales reps this month and get 200 new customers from those campaigns, your raw CAC is $10,000 ÷ 200 = $50.

Why CAC Alone Doesn't Tell the Full Story

A $50 CAC is not universally good or bad. A $50 CAC is incredible if you sell a $2,000 course or a high-ticket B2B retainer, but fatal if you sell a $25 t-shirt with a 20% margin. That is why smart businesses pair CAC with two critical companion metrics: Payback Period and LTV:CAC Ratio.

Payback Period
Payback Period = CAC ÷ (Monthly Gross Margin per Customer)

Example: If your CAC is $50 and each customer generates $25 of gross margin per month, your payback period is 2 months. You break even on month 2, and all profit begins from month 3 onwards.

LTV:CAC Ratio

This ratio measures whether your acquisition spend is tight and efficient or burning precious runway on unprofitable growth.

If a customer buys from you for 12 months with $25 monthly margin, their Lifetime Value (LTV) is $300. With a $50 CAC, your LTV:CAC ratio is 6.0:1.

Ratio Health Status
Less than 1:1 Losing money on every customer
1:1 to 3:1 Barely sustainable / High risk
3:1 to 5:1 The Sweet Spot (Healthy & scalable)
5:1+ Great efficiency / Room to spend more

Why the "Right" CAC Is Different for Every Business

E-Commerce & D2C

Must factor in return / RTO rate, payment fees, packaging, and shipping before counting any customer as profitable.

SaaS

Focuses heavily on churn and recurring MRR. A higher CAC is acceptable if the customer stays for years.

EdTech

Lead-to-admission dropoff is significant. A $2 lead can easily become a $50 CAC when closing admissions.

Services & Agencies

Sales salary, pitching time, and proposal prep must be added to your true marketing spend.

Marketplaces

Requires measuring both supply-side and demand-side acquisition separately to prevent hidden subsidies.