Discount Calculator
Find the sale price after a percentage or fixed-amount discount, stack a second discount, add tax, and see how much you save — or work out what percent off a deal really is.
How to calculate a discount
- Enter the original price and the discount as a percentage or a fixed amount.
- Add an extra stacked discount or sales tax if they apply.
- Read the final price and your savings. Switch to Find % off to check a deal from its sale price.
Features
Percent or amount
Works with “30% off” and “$15 off” alike.
Stacked discounts
Handles “extra 10% off already-reduced items”.
Tax aware
Optional sales tax or VAT on the discounted price.
Private
Everything is calculated in your browser; nothing is sent anywhere.
Frequently asked questions
How do I calculate a percentage discount?
Multiply the original price by the discount percentage and divide by 100 to get the saving, then subtract it. 25% off 80 is 80 × 25 ÷ 100 = 20 saved, so you pay 60.
Do two discounts add up?
No. A 20% discount followed by an extra 10% off is a total of 28% off, not 30%, because the second discount applies to the already-reduced price. The calculator applies them in sequence.
Is tax applied before or after the discount?
Almost everywhere tax is charged on the discounted price, which is what this calculator does. The discount comes off first, then tax is added.
How do I check what percent off a sale really is?
Switch to Find % off, enter the original and sale prices, and the real percentage saving is shown.