Revenue Metrics

CAC Payback Period

The time required to recover the customer acquisition cost through gross margin-adjusted revenue from that customer.

CAC payback period is always expressed specifically as the time to recover CAC using gross margin-adjusted revenue rather than top-line revenue. This precision matters because using gross revenue overstates the recovery speed by ignoring the cost of goods sold. A product with 60% gross margin takes 40% longer to pay back CAC than the same product with 100% gross margin at the same revenue level. Investors use CAC payback period as a primary efficiency benchmark when evaluating early-stage SaaS businesses. Best-in-class SMB SaaS companies achieve sub-12-month CAC payback; mid-market companies typically land at 12–18 months; enterprise SaaS can extend to 24 months or beyond while remaining healthy given the higher LTV of enterprise contracts.