Sale Price Calculator
Sale price after one or two discounts and tax. Two stacked discounts do not add: thirty percent then twenty percent is forty-four percent off, not fifty.
Also called: discount calculator, how much will i pay.
$1,750.00 after a 30% discount saves $750.00. A single discount, so nothing is compounding.
How this is calculated
Each discount applies to what is left after the previous one, so they multiply rather than add. Thirty percent off leaves seventy percent, and twenty percent off that leaves fifty-six percent, an effective discount of forty-four. Tax then applies to the discounted price, which is why an advertised discount is worth slightly less than it looks once tax is added back.
discounts multiply rather than add, then tax applies to what is left- V
- Original price (currency)
- d
- Each discount (decimal)
- t
- Tax rate (decimal)
Method and limits
What it assumes
- The second discount applies to the already-discounted price, which is the usual retail rule.
What it deliberately does not model
- Some promotions apply both discounts to the original price, which would add rather than multiply.
Formula version 1.0.0 · definition 1.0.0 · United States · Report a problem with this calculator
Frequently asked questions
- Is 30% then 20% the same as 50% off?
- No, it is 44% off. The second discount applies to the reduced price, so stacked discounts always come to less than their sum.