Discount Calculator
Enter an original price and a percentage off to see exactly how much you save and what you'll pay. Add sales tax if you want the checkout total.
Final price
$80.00
You save $20.00 (20% off $100.00)
Discount amount
$20.00
Price after discount
$80.00
Sales tax
—
Formula: Discount = Price × (% ÷ 100); Final = (Price − Discount) + tax on the discounted price.
Frequently asked questions
- How do I calculate a 20% discount?
- Multiply the price by 0.20 to get the saving, then subtract it. $100 with 20% off saves $20, so you pay $80.
- Is sales tax applied before or after the discount?
- In most places tax is charged on the discounted price, which is how this calculator works.