What it means
Payback is the cash-flow cousin of LTV:CAC. LTV asks "is this customer eventually profitable?" Payback asks "how long until they've handed back the money we spent to win them?" That distinction matters most when capital is expensive or you're growing without outside funding — common in operator-led Gulf businesses.
Worked example
Same business as above: CAC of AED 3,000, AED 500/month revenue per customer, 70% gross margin.
Payback = 3,000 ÷ (500 × 0.70) = ≈ 8.6 months.
That's healthy. Under 12 months is the working benchmark for subscription businesses; 18+ months means growth will eat your bank balance long before it pays you back.
Why it matters
Payback determines how fast you can responsibly scale spend. Short payback means every dirham you put into growth comes back inside the year and can be redeployed. Long payback means growth is a bet, not a flywheel — and you need the runway to make it.
Common mistakes
- Using revenue instead of gross profit (you don't pay back CAC with cost of goods).
- Pretending annual upfront contracts are "instant payback" — they're a cash event, not an LTV event.
- Optimising payback by starving acquisition until growth stalls.