Stackable Discount Calculator
Stacking multiplies, which helps you.
Price after stacking
$39.67
31.6% effective discount
Stacking multiplies rather than adds, so 20% plus 10% plus 5% is 31.6% rather than 35%. That works in your favour. It is the one place discount arithmetic is kinder than expected.
How the Stackable Discount Calculator works
Sequential discounts multiply rather than add, so 20% then 10% then 5% is 31.6% rather than 35%. That is the one place discount arithmetic is kinder than expected, and it still takes the price below cost more often than anyone intends.
Also known as: combined discount calculator · stacking coupon codes · multiple discounts total
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
Do stacked discounts add up?
No. Each applies to the price after the previous one, so the combined effect is always less than the sum. Twenty and ten stacked is 28%, not 30%.
Should I allow codes on sale items?
Only with a floor. Discount codes combining with sale prices is the most common way stores unintentionally sell below cost, and it is entirely preventable in the platform settings.
How do I set a floor?
Calculate the price at which contribution reaches zero, then set the platform's minimum above it. Automating that check is worth more than any single promotion.
Does the order matter?
Not for the final price, multiplication is commutative. It matters for how the saving is presented, and customers generally perceive the largest discount applying first as more generous.