Percent Off Calculator
Find out exactly what you will pay after a percent-off discount. Enter the original price and the discount percentage to see the sale price, how much you save, and the total with optional sales tax.
The percent-off formula is simple: Sale Price = Original Price x (1 - Percent Off / 100). For example, 20% off a $79.99 item means you pay $79.99 x 0.80 = $63.99, saving $16.00.
A few quick mental math shortcuts can help when you are shopping. 10% off is just moving the decimal point one place left ($50 becomes $5 saved). 25% off is dividing by 4. 50% off is simply half the price. For other percentages, find 10% first and multiply from there.
Sales tax is always calculated on the discounted price, not the original. So that 20% discount also reduces the tax you owe. On a $79.99 item at 20% off with 8% tax, you pay $63.99 + $5.12 tax = $69.11 total. Without the discount, you would pay $86.39 including tax. That is $17.28 in total savings including the tax difference.