Discount Calculator
See the sale price, the amount saved and the real discount.
You pay
80
You save 20 (20% off)
Before tax
80
Tax added
0
True discount
20%
Private by design. This tool runs entirely in your browser. Your input is processed on your own device and is not uploaded by DO101.
About the Discount Calculator
Enter an original price and a discount to see what you pay and what you save. It also works backwards: enter the original and sale prices to find the true percentage off, and stack a second discount or add tax.
How to use it
- 1Enter the original price.
- 2Enter the discount percentage, or the price you were quoted.
- 3Read the final price and your saving.
What you get
- Discount to final price
- Final price back to true percentage off
- Stack a second discount correctly
- Optional tax on top
- Formula shown
Frequently asked questions
How do stacked discounts work?
They multiply rather than add. 20% off then a further 10% off is 0.8 × 0.9 = 0.72, so 28% off in total — not 30%.
Is tax applied before or after the discount?
In most places the discount comes first and tax is charged on the reduced price. DO101 follows that order and shows both lines.
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