Discount Calculator
Calculate the sale price after a percentage discount. See exactly how much you save, handle double discounts, and add sales tax to get the final price.
Double Discount (Stacked)
Apply a second discount to the already-discounted price for stacked promotions.
Price Breakdown
Summary
Final Price (after discount)
$80.00
You Save
$20.00(20.0% off)
How to Use
Enter the original price and discount percentage to instantly see the sale price and your savings. Optionally add a sales tax rate to calculate the final out-of-pocket cost. For stacked promotions (like "20% off + extra 10% for members"), enter the second discount to see the true combined savings.
Formula
For double discounts, apply each discount sequentially: first calculate the price after the first discount, then apply the second discount to that reduced price. The total effective discount is always less than the sum of the two individual discounts.
Frequently Asked Questions
- How do I calculate a discount?
- Multiply the original price by the discount percentage, then divide by 100 to get the discount amount. Subtract that from the original price for the sale price. For example, 25% off a $80 item: $80 × 25 / 100 = $20 discount, so the sale price is $60.
- How do stacked discounts work?
- Stacked (double) discounts are applied sequentially, not added together. A 20% off plus an extra 10% off is NOT 30% off. First apply 20% to the original: $100 becomes $80. Then apply 10% to $80: you get $72. The total discount is actually 28%, not 30%.
- Is the discount applied before or after tax?
- Discounts are applied to the pre-tax price. Sales tax is then calculated on the discounted price. So if a $100 item is 20% off with 8% tax: the discounted price is $80, tax is $6.40, and the total is $86.40.