Free CAC Calculator and Formula.
Customer Acquisition Cost in plain numbers. Enter marketing spend and the customers it brought in. See your CAC and the LTV ceiling that keeps unit economics healthy.
Calculate your CAC
Enter your marketing spend and the customers it produced. The result updates as you type.
What you actually pay to bring in one customer.
CAC = Marketing spend ÷ New customers. Total marketing cost divided by net new paying customers in the period. The honest number is when 'marketing cost' includes ad spend, tools, and paid marketing labor.
Blended CAC uses all marketing combined. Paid CAC uses only paid spend. Blended for unit-economics, paid for channel decisions.
CAC varies 100x by business model. DTC ecom in MENA runs $12-35. Enterprise SaaS in the US runs $5k-50k. Pick your context above to see the right band.
Healthy CAC is a function of LTV. The 3-to-1 LTV-to-CAC ratio is the default benchmark. If profit LTV is $420, max CAC is $140. If profit LTV is $1,500, max CAC is $500. Without LTV, CAC alone is a number without a verdict.
A SaaS brand spending $4,200 a month.
CAC equals 4,200 divided by 30, which is $140.
Min LTV at 3:1 equals 140 times 3, which is $420 of profit LTV required to sustain this CAC.
Read. A $39/mo SaaS plan needs about 11 months of retention before profit LTV crosses $420 (at 100 percent gross margin, which most SaaS approximates). If average customer lifespan is 18 months, the unit economics work. If average is 6 months, the brand is burning cash on acquisition.
CAC questions, answered.
What is a good CAC?
CAC is good when LTV is at least three times higher. There is no universal good CAC number. A $50 CAC for a $30 product is bad. A $5,000 CAC for a $50,000 contract is excellent.
What goes into CAC?
Strict CAC includes ad spend, paid tools, and marketing labor (the people who run paid). Looser CAC also includes content, SEO, and PR costs. Use strict CAC for paid-channel decisions. Use loose CAC for company-level unit economics.
How do I lower CAC?
Three reliable levers. One, raise CVR on the landing page so the same clicks produce more customers. Two, raise CTR so the same impressions produce more clicks. Three, raise quality of the audience so a higher percentage of clickers become buyers.
What is the difference between CAC and CPA?
CPA is cost per any conversion action (sign-up, trial, lead). CAC is cost per paying customer. CPA is easier to optimize because the event happens earlier. CAC is harder but more honest because only paying customers count.
Should I include organic traffic in CAC?
For blended CAC, yes. Include the cost of producing the content that drives organic traffic. For paid CAC, no. Blended is for board reporting. Paid is for channel-level optimization.
Ask Claude for your live CAC by channel.
PaidSync pulls CAC by channel from your live accounts. Ask which channel has the lowest CAC and which is bleeding spend without producing customers. Claude answers in plain English.