Payback Period
定義
Payback period is the amount of time it takes for the gross margin generated by a customer, investment, or project to recover its upfront cost.
資金調達における位置づけ
In SaaS fundraising, “payback period” almost always means CAC payback: how many months of gross margin from a new customer it takes to recoup what was spent acquiring them.
よくある質問
What is a good CAC payback period?
Under 12 months is considered strong for SaaS, 12 to 18 months is acceptable, and anything beyond 18 to 24 months raises questions about capital efficiency.
Why does payback period matter more than CAC alone?
It ties acquisition cost to how fast that cost is recovered, showing whether growth is capital-efficient or quietly consuming cash the company does not have.