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CAC Calculator
Calculate your blended Customer Acquisition Cost, CAC by channel, and LTV:CAC ratio. Results update as you type.
Blended CAC
CAC by channel (optional)
Break down your spend and customers by channel to find your most efficient source.
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Enter your marketing spend and new customers above to calculate your CAC.
What CAC tells you
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CAC alone is meaningless
A $200 CAC is excellent for a $2,000 LTV product and terrible for a $300 LTV product. Always assess CAC in relation to LTV. The 3:1 LTV:CAC benchmark is the minimum — top-performing SaaS runs 5:1 or higher.
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CAC payback period matters more than ratio
LTV:CAC tells you the long-term return. CAC payback tells you the cash flow impact. If you need 24 months to recover CAC, you need a lot of capital to fund growth — even with a strong LTV:CAC ratio.
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Channel CAC reveals where to double down
Blended CAC hides everything. A channel with 5× lower CAC than average deserves the next dollar of spend. Break it down by channel to find your most efficient acquisition path — then protect it.
CAC payback benchmarks
< 6 months
ExcellentCapital-efficient — reinvest aggressively
6–12 months
HealthyStandard benchmark for healthy SaaS growth
12–18 months
AcceptableWorks with strong funding — watch cash closely
> 18 months
Needs attentionUnsustainable without external capital
Frequently asked questions
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