Black Friday Sale Discount Calculator
How much can you discount your products before your sale becomes unprofitable?
2026-09-22
$
$
$
Use your blended CAC for a cold sale.
$
%
Enter the percentage of sales you expect to come from customers who have purchased from you before. Leave blank to use 25%.
Your discount ceiling
Cold-customer breakeven28.1%
Practical ceiling, with buffer25.1%
Repeat-customer breakeven66.1%
Keep cold-customer discounts at or below 25.1% if you want a three-point profit buffer.
What each order leaves behind
New customers include your ad cost. Repeat customers do not.
| Discount | New customer | Repeat customer |
|---|---|---|
| Full price | $28.10 | $66.10 |
| 15% off | $13.10 | $51.10 |
| 30% off | -$1.90 | $36.10 |
| 40% off | -$11.90 | $26.10 |
Profit per 100 orders at 30% off
$760.00
$7.60 average profit per order
The store isn’t necessarily unprofitable. The growth might be.
75 new orders contribute -$142.50. 25 repeat orders contribute $902.50.
Written by Jon Blackwood
To Jon it's business and it's personal. Along with building a strong working friendships with our clients Jon loves to build personalised and strategic campaigns to help your business thrive online.
