Discount Calculator
This discount calculator finds the sale price and how much you save from the original price and the discount percentage. Add a second discount for stacked offers and an optional sales tax, and the discount calculator returns the sale price, your savings, the effective discount, and the final price with tax.
Results
The Discount Calculator is part of our Business & Pricing collection. Browse more business & pricing to size, convert, and check your work alongside this tool.
What the discount calculator shows
A discount takes a percentage off the original price. The discount calculator works out the sale price and the amount you save, and handles a second discount applied on top, such as an extra coupon. Because stacked discounts multiply rather than add, the effective discount is often smaller than it looks.
Discount percentage calculator formula
The savings are the original price minus the sale price, and the effective discount is the savings divided by the original price. Tax is applied after the discount, as most shops do.
Discount calculator example
A $2,500 item at 25 percent off:
With 8 percent sales tax the final price is $2,025. With 20 percent off plus an extra 10 percent, the sale price is $1,800, an effective discount of 28 percent, not 30.
How to use the percent off calculator
Enter the original price, the discount percentage, an optional extra discount, and an optional sales tax rate. The percent off calculator returns the sale price, your savings, the effective discount, and, if you entered tax, the final price you pay at the register. It works as a quick 20 off calculator or 25 off calculator for any price.
Reading the discount sale price calculator result
The sale price is what the item costs before tax; the savings show what the offer is worth in money. For stacked offers, judge the deal by the effective discount. If you already know the sale price and want the original, divide the sale price by (1 − discount/100).
When to use the discount price calculator
- Checking a sale tag with the discount price calculator
- Working out stacked coupon savings
- Finding the price you pay after sales tax
- Setting promotional prices in a shop
Common discount calculator mistakes
- Adding stacked discounts. Multiply the remaining fractions.
- Dividing by the sale price. Discount percentage uses the original price.
- Forgetting tax. The register price includes it.
Tips for accurate results
- Check whether a coupon applies before or after other discounts.
- Compare deals by final price with tax.
- Watch for inflated original prices.
Discount calculator with tax
A discount calculator with tax shows what you will pay at checkout. Shops apply the discount first and then add sales tax to the reduced price, so the tax is smaller than it would be on the full price. On a $2,500 item at 25 percent off with 8 percent tax, the tax is $150 on $1,875, giving $2,025. Sellers planning a promotion should check how many extra units they must sell to cover the lower price, which the break-even calculator works out.
Coupon calculator: stacked discounts
When a store offers 20 percent off and a coupon adds 10 percent more, the second discount applies to the already-reduced price. That is why a coupon calculator always gives a little less than the sum of the two percentages.
Percent off calculator reference ($100 item)
| Discount | Sale price | You save |
|---|---|---|
| 10% off | $90 | $10 |
| 20% off | $80 | $20 |
| 25% off | $75 | $25 |
| 50% off | $50 | $50 |
| 20% + 10% off | $72 | $28 |
Discount Calculator FAQ
How do I calculate a discount?
Multiply the price by (1 − discount ÷ 100). 25% off $2,500 is $1,875.
Are two discounts added together?
No. They multiply: 20% then 10% off leaves 72%, a 28% total discount.
Is tax added before or after the discount?
Usually after. The calculator applies tax to the sale price.
How do I find the discount percentage from two prices?
(Original − sale) ÷ original × 100.