Free CAC Payback Period Calculator

Calculate how many months it takes to recover your customer acquisition cost. See cumulative profit by month, cohort-level cash flow, and 12-month customer ROI.

Customer Economics

$
$
%
orders

Monthly Spend & Volume

$
$

CAC Payback

5.2 months

2 orders to recover

Monthly Profit / Customer

$7.75

$39.00 gross/order

12-Month Customer Value

$93.00

133% ROI on CAC

Cohort Payback

5.2 months

$5,000 monthly spend

5.2-month payback — recover CAC quickly, cash-flow friendly

Cumulative Profit per Customer (24 months)

M1
$-32
M2
$-25
M3
$-17
M4
$-9
M5
$-1
M6
$+7
M7
$+14
M8
$+22
M9
$+30
M10
$+38
M11
$+45
M12
$+53
M13
$+61
M14
$+69
M15
$+76
M16
$+84
M17
$+92
M18
$+100
M19
$+107
M20
$+115
M21
$+123
M22
$+131
M23
$+138
M24
$+146

CAC recovered in month 6 — highlighted with green ring

Per-Customer Waterfall

CAC (upfront cost)-$40.00
Monthly gross profit+$9.75
Monthly operating cost-$2
Net monthly profit$7.75/mo

Monthly Cohort Cash Flow

Ad spend (cash out)-$5,000.00
Cohort monthly return (125 customers)+$968.75
Net monthly cash flow$-4,031.25

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