Percent Off Calculator
Free to use, with no sign up. Your entries stay in this browser; calculations run on your device.
Result
Discounted price = original price × Π(1 − discount% / 100), applied in order. Saved = original price − discounted price. Tax = discounted price × tax% / 100; total = discounted price + tax.
Introduction to Business Math, section 4.1 defines net price from single and multiple discounts. The entered tax percentage is multiplied by the discounted price; no tax rules are inferred.
Worked example: $100 with 20% off, then another 10% off, becomes $72, saving $28 (28% overall). Entering 5% sales tax adds $3.60 for a $75.60 total.
Discounts apply to the remaining price in the entered order, rather than adding the percentages. A 100% discount makes the remaining price zero. USD prices accept up to two decimal places. Intermediate discounts keep full precision; the final discounted price rounds to cents, then the entered tax applies and rounds to cents. Step amounts are display-rounded and may not sum exactly. Tax is arithmetic on your entered rate, with no location lookup or taxability decision.
Arithmetic only; not financial advice.
Related calculators: Discount Calculator.
How to use this tool
Enter the original USD price and percent off. For stacked discounts, enter percentages in order separated by commas. Optionally enter a sales tax percentage (0 for none), then select Calculate.
Frequently asked questions
Is this calculator free and private?
Yes. Arithmetic runs in your browser without uploading your entries or saving them to browser storage.
Do stacked discounts add together?
No. Each percentage applies to the remaining price. A 20% discount followed by 10% gives 28% off overall, because 0.80 × 0.90 = 0.72.
How is optional sales tax calculated?
The entered percentage applies after discounts to the discounted price rounded to cents. Tax rounds to cents and is added to that price. You supply the rate; this calculator does not determine tax rules.