CAC Payback Period
The number of months required to recover the cost of acquiring a customer from their subscription revenue.
Formula
Why it matters
Payback period is the clearest measure of capital efficiency in a growth business. A 12-month payback period means a customer becomes profitable within their first year — allowing you to reinvest that revenue into acquiring the next customer.
How to improve CAC Payback Period
Reduce CAC through better conversion rates or organic growth, increase ARPU through pricing improvements, and reduce churn to improve net revenue retention.
Best-in-class SaaS: under 12 months. Median: 12–18 months. Above 24 months indicates capital inefficiency.
Prooflytics tracks CAC Payback Period automatically from your connected sources and flags it in your daily briefing when it moves significantly.
Start free trialFrequently asked questions
What is a good CAC payback period for SaaS?
Under 12 months is considered best-in-class. 12–18 months is the median for well-run SaaS companies. Above 24 months means you need significant capital to fund growth before customers become profitable.