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Discount Calculator
Sale prices are easy to misjudge, especially when tax is added at the till. Enter the original price and the discount percentage and this calculator shows the amount you save, the discounted price, and — if you add a tax rate — the final amount you will actually pay.
Use the tool
How to use the Discount Calculator
- Enter the original price, the discount percentage, and a tax rate if you want the final total.
- Adjust any optional settings to match your page, business or campaign.
- Click the button to generate your result instantly — nothing is uploaded; the tool runs in your browser.
- Copy the result, or download it as a file where that option appears, and paste it into your site, document or campaign.
Frequently asked questions
How is the discount worked out?
Discount amount equals original price multiplied by the discount percentage divided by 100. The sale price is the original price minus that discount.
Is tax calculated on the discounted price?
Yes. Tax is applied to the price after discount, which is how most shops charge it.
Can I use it for a price increase instead?
Enter a negative discount percentage and the calculator shows the increased price — useful for markups and price rises.