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Tool 09 · Calculators

CAC Payback Calculator

Months to pay back ad spend per customer, with a health badge — recomputed live as you adjust the inputs.

Unit Economics

Gross Margin%55
%0%90
Repeat Purchases / Month1.5
0.16

Payback = (CAC ÷ contribution per order) ÷ repeat frequency. Fewer orders needed and faster repeat buying both shorten payback.

Live Results

Healthy
Contribution / Order
$33.00
AOV × gross margin
Orders to Recover CAC
1.36
CAC ÷ contribution
Payback Period
0.91 mo
months to recover ad spend
Contribution / Month
$49.50
per active customer
Healthy: Payback under 1 month — customers recover ad spend almost immediately.

Health tiers: green ≤ 1 month · amber 1–3 months · red over 3 months.