Discount & Sale Price Calculator

Stacked discounts are applied sequentially, not added together. For a $100 item with 20% off and an extra 10% coupon: the 20% drops the price to $80, and the extra 10% is taken off the $80, resulting in an additional $8 discount for a final price of $72 (an effective 28% total discount, not 30%).

In almost all US states and jurisdictions, sales tax is assessed on the final negotiated or discounted selling price of the item, rather than the original manufacturer suggested retail price (MSRP). However, manufacturer rebates may differ from instant store coupons.

To find 10% of any price, simply move the decimal point one digit to the left (e.g., 10% of $64 is $6.40). For 20%, double the 10% amount ($12.80). For 15%, add the 10% amount and half of it ($6.40 + $3.20 = $9.60). Then subtract that number from the original price.

A markdown is a reduction from the retail selling price to clear seasonal inventory or promote sales. A margin discount looks at how much gross profit is sacrificed relative to the product cost of goods sold (COGS).

Most retailers stipulate in their coupon policy that discounts will not exceed the value of the item, meaning the lowest possible checkout price for an item is $0.00.