Discount Calculator
Calculate the sale price after a percentage discount, or find out what discount percentage you are getting.
Price After Discount
Sale Price
£96.00
You Save
£24.00
What Discount Am I Getting?
Discount
34.0%
You Save
£51.00
How to Calculate a Discount
Calculating a discount is straightforward: multiply the original price by the discount percentage and divide by 100 to get the discount amount, then subtract from the original price. For example, a 20% discount on £120 gives a saving of £24, leaving a sale price of £96.
The reverse calculation — finding the discount percentage from an original and sale price — is equally useful when shopping. If an item was £150 and is now £99, the saving is £51, which is 34% of the original price.
During major sales events like Black Friday, Boxing Day, and end-of-season sales, retailers often advertise large headline discounts. Always check the original price is genuine — UK consumer law requires that the "original" price must have been the actual selling price for at least 28 consecutive days in the previous 12 months.
Frequently Asked Questions
How do I calculate 20% off a price?
Multiply the price by 0.20 to get the discount amount, then subtract from the original. Or simply multiply by 0.80 to get the final price directly. For example, 20% off £50 = £50 × 0.80 = £40.
What is the difference between discount and VAT?
A discount reduces the price you pay. VAT (Value Added Tax) is a tax added to the price. In the UK, most goods are subject to 20% VAT. A discount is applied before or after VAT depending on the context.
How do I calculate the original price from a discounted price?
Divide the sale price by (1 − discount/100). For example, if an item costs £80 after a 20% discount, the original price was £80 / 0.80 = £100.
Are online prices always cheaper than in-store?
Not always. Online prices can include delivery charges, and in-store sales sometimes offer better discounts. Always compare the total cost including any additional fees.