UTILITY / PCT-10
Discount & Sales Tax Calculator
See the final price after a percentage discount and sales tax, plus how much you save and how much tax you pay.
How the final price is worked out
The discount comes off the original price first. Sales tax is then charged on the discounted price, which is how most shoppers see it at the register.
You save = price × (discount ÷ 100)
Price after discount = price − you save
Sales tax = price after discount × (tax rate ÷ 100)
Final price = price after discount + sales tax
Worked shopping examples
$120 jacket, 25% off, 8% tax
You save $30, so the price drops to $90. Tax is $90 × 0.08 = $7.20, and you pay $97.20.
Does the order of tax and discount matter?
For a percentage discount, no: $50 × 0.9 × 1.08 and $50 × 1.08 × 0.9 both give $48.60. Multiplying by 0.9 and by 1.08 gives the same result in either order. Tax on the $45 discounted price is $3.60.
Two discounts in a row
“20% off, then an extra 20% off” is not 40% off. $100 × 0.8 × 0.8 = $64, a total discount of 36%. Enter 36 here to model that.
Common shopping mistakes
Entering the tax rate as a decimal
Enter 8 for 8%, not 0.08. Entering 0.08 models a tax of 0.08%, which would barely change the price.
Ignoring other charges
Shipping, delivery, deposit, and service fees are not included. Whether those are taxed depends on where you live.
Limits of this estimate
Sales tax rules vary by state, county, and city, and some items are exempt or taxed at a different rate. Manufacturer coupons can also be taxed differently from store discounts. Use the rate shown on your receipt or by your local tax authority. Results are rounded to the cent for display.