Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Calculate the final price and savings after applying a percentage discount.
This tool calculates the final price and amount saved when a percentage discount is applied to an original price.
Enter the original price and discount percentage. Savings and final price appear instantly.
Discount Amount = Original Price × (Discount % / 100)
Final Price = Original Price - Discount Amount
With the default inputs, an original price of 100 and a 20 percent discount, you save 20 and pay 80. A few more cases with hypothetical prices:
Amounts display to two decimals, so a result like 8.9985 is shown as 9.00 and 51.0015 as 51.00. Use the displayed figures for shopping decisions, and remember a store's till may round each line separately.
The FAQ mentions that discounts are applied one after another. Here is the arithmetic. Take an item at 100 with 20 percent off followed by a further 10 percent off. After the first, the price is 80. The second takes 10 percent of 80, which is 8, leaving 72. That is a combined 28 percent discount, not 30. To check it with this tool, run 100 at 20 percent, then enter the resulting 80 with 10 percent. The order does not change the final price, since multiplying 0.8 by 0.9 gives the same as 0.9 by 0.8, but it does change how large each individual saving looks.
If you see a sale price and the advertised discount, you can find the original price by dividing the sale price by one minus the discount as a decimal. A jacket at 63 after 30 percent off started at 63 divided by 0.70, or 90. Confirm by entering 90 and 30 in the calculator. To work out the discount percent yourself, subtract the sale price from the original, divide by the original, and multiply by 100. For an original of 90 and a sale of 63, that is 27 divided by 90, or 30 percent.
The calculator only applies the percentage discount. It does not add sales tax, shipping or fees. In many places sales tax is charged on the discounted price, but rules vary by location and by the type of coupon, so check the receipt or your local tax authority for specifics. A practical approach is to calculate the discounted price here and then add tax at your local rate. Store coupons and manufacturer coupons can be treated differently for tax purposes, and that is one place where the total on the receipt may not match a simple calculation.
Sellers can use the tool to preview the effect of a promotion on the customer's price. Before running one, check that the discounted price still leaves acceptable profit; the Profit Margin and Contribution Margin calculators will show the effect on your side.
Apply them sequentially, not additively -- e.g. 20% off then 10% off is NOT 30% off; run the result through this calculator twice.
Divide the sale price by one minus the discount as a decimal. A price of 63 after 30 percent off started at 63 divided by 0.7, which is 90.
Not for the final price. Applying 20 percent then 10 percent gives the same result as 10 percent then 20 percent, a combined 28 percent off.
No. The tool applies only the percentage discount. Add tax at your local rate afterward, and check local rules on whether tax applies before or after coupons.
Divide the coupon amount by the item price and multiply by 100. Ten off a 40 item equals 25 percent.
Reference: Consumer Financial Protection Bureau