Discount Calculator

Discount Calculator

How discount math works

A discount reduces the original price by a percentage or fixed amount. The most common formula is sale price = original price × (1 - discount rate). If a $120 item is 25% off, the discount is $30 and the sale price is $90.

Use this page when you want to compare a shelf price, coupon, seasonal sale, or clearance tag quickly. A second useful formula is discount rate = discount amount / original price × 100. If a $75 item is marked down by $15, the discount rate is 20%.

Sales tax, coupons, and final price

Stores do not always apply discounts and tax in the same visible order. In many cases, tax is calculated after the discount, but fees, shipping, and regional rules can change the final total. Treat the result as a shopping estimate unless you know the store's exact checkout rules.

Related tools

Use Sales Tax Calculator for tax after a discount, Percentage Calculator for markdown rates, and Tip Calculator when the discounted amount affects a restaurant bill.