Discount calculator
Stack discounts, subtract a fixed coupon and apply sales tax to the discounted price.
Get started
- Use the example values or enter your own measurements.
- Calculate, then copy the result or download the available details.
Example
Input
100 with 20% and 10% offExpected result
72; combined discount 28%Good to know
The calculation runs in your browser. Use consistent units in fields with no explicit unit.
Calculation method
Apply percentage discounts in order, then the fixed coupon, then tax. Up to 10 rates from 0% to 100%.
Two successive discounts of 20% and 10% leave 0.8 × 0.9 of the original price. Enter both rates in order, then add a coupon or tax if applicable.
Use an inverse mode when you know the sale price or the amount saved. Inverse modes handle one discount before tax.
Calculation mode
Apply discounts
- Original price
- Discount percentages
- Fixed coupon
- Tax rate · %
Find original price
- Price after discount
- Discount type · Percentage / Fixed amount
- Discount
Find rate and savings
- Original price
- Known amount · Discounted price / Savings
- Amount
Find prices from savings
- Amount saved
- Discount rate · %