Discount Calculator

How to use the Discount Calculator

1. Enter the original price and the percent off.
2. If you have a coupon on top of the sale, put it in "Extra % off". Add your sales tax rate if you want the checkout total.
3. To check a deal, use the second box with the original and sale prices to see the real percent off.

How it's calculated

Stacked discounts multiply rather than add. A 25% discount followed by an extra 10% is a total of 32.5% off, not 35%, because the second discount applies to the already-reduced price.

Frequently asked questions

Is 25% off plus 10% off the same as 35% off?
No. The extra 10% comes off the sale price, not the original, so the combined discount is 32.5%. This calculator handles stacking for you.

Is sales tax charged on the original or the sale price?
In most places, tax is charged on what you actually pay, the discounted price. Some coupon types are treated differently, so check your local rules.

How do I compare two deals?
Run each through the calculator and compare the "You pay" totals rather than the percentages, especially when the starting prices are different.