Discount Calculator
Enter a price and a % off to see the sale price and exactly how much you save.
How to use
- Enter the original price.
- Enter the discount percentage (e.g. 25 for 25% off).
- Optionally add a sales tax percentage — tax is applied to the discounted price. The final price and savings update instantly.
Examples
25% off a $80 jacket
The discount is $20, so the sale price is $60. You save $20.
20% off with 10% sales tax
A $100 item at 20% off costs $80; adding 10% tax on the discounted price gives a final price of $88.
FAQ
How is the sale price calculated?
Sale price = original price × (1 − discount ÷ 100). A 25% discount on $80 is 80 × 0.75 = $60.
Is tax applied before or after the discount?
After. Retailers charge tax on the amount you actually pay, so this calculator applies the tax percentage to the discounted price.
How do I stack two discounts, like 20% off plus an extra 10%?
Sequential discounts multiply instead of adding: 20% then 10% is 0.80 × 0.90 = 0.72, i.e. 28% off in total, not 30%. Run the calculator twice, feeding the sale price back in.
Why is my discount limited to 0–100%?
More than 100% off would mean a negative price, which no sale means in practice — so values outside 0–100 are flagged as errors.