How Much Can I Spend To Acquire a Customer?
Enter your average order value, margin, and repeat purchase behavior. Get your maximum and ideal CAC instantly — plus see how improving each metric changes what you can afford to spend.
Customer Economics
Percentage of customers who order again
Compare Your CAC (Optional)
Currency
Maximum CAC
$16.00
80% of first-order profit
Ideal CAC
$18.67
LTV ÷ 3 (3:1 ratio)
LTV Breakdown
Lifetime Value
$140.00
Gross LTV
$56.00
LTV:CAC Ratio
Gross LTV ÷ Max CAC
3.5:1
HealthySuggestions
Next decision: break-even ROAS
Translate customer economics into ad efficiency so you know the minimum ROAS you must hold.
How it works
This calculator uses your gross margin and average order value to determine two key numbers: your maximum CAC (80% of first-order gross profit) and your ideal CAC (based on a 3:1 LTV:CAC ratio).
The LTV:CAC ratio tells you if your acquisition spending is sustainable. A ratio above 3:1 is healthy — below 1:1 means you're losing money on every new customer.
Next Decision
Keep moving through the operating model instead of treating this tool as a one-off calculation.
Calculate Break-Even ROAS