Discount Calculator
Enter the original price and the discount percentage to see the amount you save and the final price.
Quick answer. Amount saved equals original price multiplied by the discount percentage, divided by 100. Final price equals original price minus the amount saved.
The formulas
Amount saved equals original price multiplied by the discount percentage, divided by 100.
Final price equals original price minus amount saved.
Worked example
Original price is 2,500. Discount is 20 percent.
Amount saved is 2,500 multiplied by 20, divided by 100, which is 500. Final price is 2,500 minus 500, which is 2,000.
Common mistakes
Applying two discounts by adding their percentages. A 20 percent and a 10 percent discount in sequence give 28 percent in total, not 30 percent.
Forgetting that tax is usually charged after the discount. This tool does not add tax.
Stacked discounts
Two discounts applied one after another are not the same as adding their percentages. A 20 percent discount followed by a 10 percent discount on the reduced price gives a total reduction of 28 percent, not 30 percent.
Example: an item priced at 1,000 with 20 percent off becomes 800. A further 10 percent off 800 is 80, so the final price is 720. The total saving is 280, which is 28 percent of 1,000.
Discount before or after tax
Most shops calculate the discount on the price before tax. Some countries and shops calculate tax first. Check the receipt to see how your store applies the discount.
Using discounts for pricing
To find the price that gives a target final price, divide the target by one minus the discount rate. For a 20 percent discount and a target of 800, the original price is 800 divided by 0.8, which is 1,000.
Questions
Can the discount be above 100 percent?
No. The discount must be between 0 and 100.
Does this include tax?
No. Add tax to the final price if your store charges it after discounts.
How do I calculate two discounts together?
Apply the first discount to the original price, then apply the second discount to the reduced price. Stacked discounts are not the same as adding the percentages.
Last updated: 2026-10-08. Standard percentage formulas. Formulas checked against the stated method.