Discount Calculator
Find the sale price and amount saved from an original price and discount percentage.
Results
Final Sale Price
Total Saved
Effective Discount
Tax Added
How Percentage Discounts Work
A percentage discount reduces an item's price by a fraction of its original value. To find the sale price, multiply the original price by (1 − discount ÷ 100). For example, a 25% discount on a $100 item gives a sale price of $100 × (1 − 0.25) = $75, and the amount saved is $25.
The amount saved is simply the original price minus the sale price, and the effective discount is that saving expressed as a percentage of the original price.
Why Stacked Discounts Don't Simply Add
When two discounts are applied one after another, they multiply rather than add. A 25% discount followed by an extra 10% off is not a 35% discount. The second discount applies to the already-reduced price, not the original.
Starting from $100: after 25% off you pay $75, then 10% off $75 leaves $67.50. That's a total saving of $32.50, or an effective discount of 32.5% — less than the 35% you would get by adding the percentages.
Sale-Price Tips
- Always check whether sales tax is applied before or after the discount — tax is usually charged on the discounted price.
- Compare the effective discount across stores rather than the headline percentage; coupon stacking rules vary.
- A higher original "list" price can make a discount look larger than the real saving — compare final prices.
- Bulk and clearance discounts often beat a single percentage coupon once stacked.