Discount Calculator
Stack discounts, add tax, or work backwards from a sale price
Advanced options
$80.00
Sale price
$20.00
Amount saved
20.0%
Effective discount
Stacked Discounts
Add multiple percentage or dollar discounts applied one after another
Tax Aware
Add sales tax before or after the discount to see the true final price
Reverse Mode
Know the sale price? Work backwards to find the effective discount
Any Currency
Switch currencies and every result formats accordingly
Frequently asked questions
Can I stack more than one discount?
Yes. Add as many percentage or dollar discounts as you like — each one is applied to the running balance left by the previous discount, not summed together. For example, 20% off followed by 10% off a $100 item gives $72, not $70.
How does tax interact with the discount?
Open Advanced options to add a tax percentage and choose whether it applies to the original price (before discount) or the discounted sale price (after discount, the common case). The final price shown includes tax.
What is reverse mode?
Switch to Reverse when you know the original price and the final sale price but want to know the effective discount percentage and how much you saved.
What happens if the discounts add up to more than the price?
The sale price is clamped at $0 (or your chosen currency's zero) and the amount saved equals the full original price, so results never go negative.
Can I use a currency other than US dollars?
Yes. Pick any supported currency from the currency selector at the top of the calculator and every result formats in that currency.