How to use the discount calculator
- Type the original price and the discount, such as 25% off.
- Got a second discount, like an extra 10% off at the till or with a code? Type it in "Extra discount".
- Add sales tax only if it's added at the till where you are (see below). Leave it empty if prices already include tax.
- Read the sale price, what you save and the total you pay.
How it's calculated
Worked examples
Does the price include tax?
In the UK and Australia, shop prices for shoppers already include VAT or GST, so leave sales tax empty. In the US and Canada, sales tax is usually added at the till and the rate depends on where you are, so type your own local rate if you want the total. We don't fill in any rates for you.
Frequently asked questions
Why isn't 20% plus 10% off the same as 30% off?
The second discount is taken off the price that's already been reduced, which is smaller. On $100, 20% off leaves $80, and 10% off $80 is $8, so you pay $72: 28% off in total. A single 30% off would leave $70.
How do I work out a discount in my head?
10% is the price with the decimal point moved one place left ($80 → $8). Double it for 20%, halve it for 5%, and add them up for others: 25% off $80 is $8 + $8 + $4 = $20.
How do I find the original price from a sale price?
Divide the sale price by (1 − discount ÷ 100). For example, $60 after 25% off: 60 ÷ 0.75 = $80. Our percentage calculator can help with other percentage questions.