Calcority
SaaS & growth

LTV:CAC Ratio

Formula reviewed by Tahir Asif, CMA

Lifetime value divided by acquisition cost — the classic SaaS unit economics health check.

LTV:CAC ratio compares what a customer is worth over their lifetime to what it cost to acquire them. A commonly cited benchmark is 3:1 or higher, though the right target varies by business model, growth stage, and how much of that value arrives quickly versus slowly.

A very high ratio (10:1 or more) isn't automatically a good sign either — it can indicate underinvestment in growth, since the company could likely spend more on acquisition and still turn a healthy return.

LTV:CAC ratio
LTV ÷ CAC

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