Discount
&
Sale
Price
Calculator

Calculate sale prices after percentage discounts with optional sales tax. Reverse-calculate discount percentages from original and sale prices.

Calculate Sale Price

Quick:

Find Discount Percentage

Know the original and sale price? Find out what discount was applied.

Result

Original Price$99.99
Discount (20%)-$20.00
Sale Price$79.99
Final Price$79.99
You Save20%

Learn more

Stacked discounts are not additive — a 20% off plus 10% off is only 28% total. Here is why.

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Frequently Asked Questions

Multiply the original price by the discount percentage divided by 100 to get the discount amount. Subtract the discount amount from the original price. For example, 20% off $99.99: $99.99 x 0.20 = $20.00 discount, final price = $79.99.

Sales tax is applied after the discount is subtracted. This is the standard practice in most jurisdictions — you pay tax on the actual sale price, not the original price.

Use the "Find Discount Percentage" section. Enter the original price and the sale price, and the calculator will show you the discount percentage and dollar amount saved.