Money
Discount Calculator
Enter the original price and a discount percent. We compute the savings, the sale price, and an optional final total with sales tax — handy for shopping, deal evaluation, and budgeting.
e.g. 120.00
Common breakpoints: 10%, 20%, 25%, 30%, 50%, 70%. · e.g. 25
Combined state + local rate. Leave at 0% to skip.
After 25% off
$90.00
You save $30.00
Examples
$120 at 25% off
= $90 (saved $30)
$59.99 at 40% off + 8.25% tax
= $38.95 (saved $24.00)
$1,499 at 15% off
= $1,274.15 (saved $224.85)
How it works
We multiply the original price by the discount as a decimal to find your savings, subtract that from the original to get the sale price, and optionally add tax on the sale price.
Savings · price × (discount ÷ 100)
Sale price · price − savings
Final total · sale price × (1 + tax ÷ 100)
Frequently asked questions
Multiply the original price by the discount percent expressed as a decimal. A 25% discount on $80 is 80 × 0.25 = $20 in savings, leaving $60 as the sale price.
In most U.S. jurisdictions tax is applied after the discount, on the actual amount paid. This calculator follows that order: sale price first, then tax. If your locale taxes the original price, compute the tax separately on the original amount.
Subtract the sale price from the original, divide by the original, and multiply by 100. ($80 − $60) ÷ $80 × 100 = 25%. Use the percentage of the savings against the original to find the discount you got.
Yes — apply them sequentially, not added together. A 20% off followed by an extra 10% off is 100% × 0.80 × 0.90 = 72% of the original (a 28% total discount), not 70%.
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