CAC Payback Period

CAC payback period is the number of months it takes a company to recover what it spent acquiring a customer, typically calculated as customer acquisition cost divided by gross margin per customer per month. Shorter payback means less cash tied up in growth.

The number is only trustworthy when bookings and cash data are reconciled to the ledger, not pulled as CRM estimates: a deal marked “closed won” in the CRM isn’t the same as cash collected, and mixing the two quietly bends the payback figure. See the SaaS metrics an AI can actually get right.