CAC payback calculator
CAC payback is how many months a customer takes to repay what it cost to acquire them. Enter your CAC, ARPA and gross margin. Under 12 months is strong; over 18–24 is expensive to fund.
CAC paybacki
12.5 mo
⚠️Acceptable for early-stage (12–18 months); aim to shorten it as you scale.
CAC payback benchmarks →CAC payback = CAC ÷ (ARPA × gross margin). Shorter payback ties up less cash funding growth.
See your full unit economics, not just payback.
The full model checks LTV:CAC, payback, burn multiple and more against stage benchmarks.
Last updated: June 25, 2026. For information only — not financial advice.