Work out payback on cac instantly with clear inputs, formula shown and shareable results.
Payback measures how long gross profit takes to repay the cost of winning a customer. It is a cash-flow test rather than a profitability one: a business with strong lifetime value but slow payback still needs funding to grow.
CAC payback
Payback months = CAC / (monthly revenue × gross margin)
Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
Under twelve months is strong for subscription businesses; beyond eighteen months growth becomes capital-hungry.
Because the cost of serving the customer is real cash. Revenue payback flatters any business with meaningful delivery costs.