How Discounts Affect Profit Margin
Discounts can increase sales volume, but they also reduce the revenue available to cover cost, fees, and profit.
Discounts come out of profit first
If a product sells for $80 and costs $42, the full-price profit before fees is $38. A 20% discount lowers the price by $16. Cost did not change, so a large part of the original profit disappears.
Formula
Final Price = Original Price * (1 - Discount / 100)
Profit = Final Price - Cost - Fees
Margin = Profit / Final Price * 100Break-even discount
The break-even discount is the discount level where profit reaches zero. A promotion above that level may still move inventory, but it is no longer profitable on the sale itself.
Use the calculator
Use the Discount Margin Calculator to test profit after a discount. Use the Product Pricing Calculator if you need to set a regular price that can support planned promotions.
FAQ
Why do discounts hurt margin so much?
A discount reduces revenue, but cost usually stays the same. That means the discount comes mostly out of profit.
What is a safe discount?
A safe discount depends on your cost, fees, and original margin. Calculate the post-discount profit before promoting.
Is a high-volume discount always profitable?
No. More volume helps only if each discounted sale still contributes enough profit after cost, fees, and fulfillment.