Revenue Metrics

Payback Period

The number of months required to recover the cost of acquiring a customer from the revenue that customer generates.

Payback period measures the time between customer acquisition and breakeven on that customer. A 12-month payback means the customer's revenue pays back their acquisition cost in one year; every month after that is profit. Shorter payback periods are better because they reduce the capital required to fund growth. Gross margin-adjusted payback periods give a more accurate picture of true economics. SaaS businesses serving SMB customers typically target sub-12-month payback periods; enterprise-focused businesses may accept 18–24 months given higher LTV. The payback period also determines how capital-intensive growth is: a business with a 6-month payback can reinvest customer revenue into acquiring more customers quickly, while an 18-month payback creates a persistent cash flow gap that requires external funding.