Discount Calculator
Find the sale price and amount saved from a percent-off or fixed-amount-off discount on any price.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Sale Price
$80.00
You Save
$20.00
Effective Discount
20.0%
Example
A $100.00 item with a 20.0% discount saves $20.00, for a final sale price of $80.00.
Original price split between sale price and savings
- Sale Price: $80.00
- Amount Saved: $20.00
What is a Discount Calculator?
A discount calculator finds the sale price and the amount saved when a percentage or fixed dollar amount is taken off an original price. It works both ways: enter a percent-off discount (like "25% off") or a fixed-amount discount (like a "$20 coupon"), and see exactly how much you'll pay and how much you'll save.
Retailers advertise discounts in both formats depending on the promotion — percentage discounts scale with the item's price (a 20% discount saves more on a $500 item than a $50 one), while fixed discounts (coupons, gift cards, rebates) save the same dollar amount regardless of price.
Discount Formulas
For a percent-off discount:
For a fixed-amount discount, simply subtract the flat amount:
Percent Off vs. Fixed Amount Off
These two discount types behave very differently as the original price changes. A 20% discount always removes one-fifth of the price, whether the item costs $10 or $10,000 — the dollar savings scale with the price. A $20-off coupon removes exactly $20 no matter what, so it is a much bigger relative discount on a cheap item than on an expensive one. When comparing two promotions, convert both to the same format (either both as a dollar amount or both as a percentage of the price) before deciding which one saves more.
Stacking Multiple Discounts
When two percentage discounts are applied one after another — for example, "25% off, then an extra 10% off" — the second discount applies to the already-discounted price, not the original price. The combined effect is always less than simply adding the two percentages together: 25% + 10% stacked is equivalent to a 32.5% discount overall, not 35%, because the second 10% is taken from a smaller number. Always apply stacked discounts sequentially, one at a time, to get the correct final price.
Example — Your Current Inputs
A $100.00 item with a 20.0% discount saves $20.00, for a final sale price of $80.00.
Additional Example — Holiday Sale Jacket
A jacket is marked at $150 for a holiday sale advertising "30% off." The discount amount is $150 × 0.30 = $45, bringing the sale price to $105. If instead the store offered a flat $40 coupon on the same $150 jacket, the sale price would be $110 — five dollars more than the percentage discount, showing why comparing the two discount types matters before buying.
About These Parameters
- Original Price
- The list price or "before discount" price of the item, as marked on the tag or listed at checkout before any promotion is applied.
- Discount (Percent Off Mode)
- The percentage taken off the original price, such as 20% or 50%. Common in seasonal sales, clearance events, and storewide promotions.
- Discount Amount (Fixed Amount Off Mode)
- A flat dollar amount taken off the price, regardless of what the item costs — typical of coupons, gift cards applied at checkout, mail-in rebates, and loyalty credits.
Frequently Asked Questions
Is 20% off the same as a $20 discount on a $100 item?
Yes, in that one specific case they're equal — 20% of $100 is $20. But they diverge immediately on any other price: 20% off a $200 item saves $40, while a flat $20 coupon still only saves $20. Percentage discounts scale with price; fixed discounts don't.
How do I calculate two stacked discounts, like 20% off plus an extra 10%?
Apply them one at a time, not added together. First take 20% off the original price to get an intermediate price, then take 10% off that intermediate price. The combined effect (28% off the original in this example) is always slightly less than simply adding the percentages (30%), because the second discount is calculated on an already -reduced amount.
Does the discount apply before or after sales tax?
Almost always before. Retailers apply the discount to the item's price first, then calculate sales tax on the already-discounted amount. This calculator computes the pre-tax sale price — use the Sales Tax Calculator afterward if you also want the final tax-inclusive total.
What discount percentage does a "buy one, get one 50% off" deal work out to?
On two identical items, "buy one get one 50% off" means you pay full price for the first item and half price for the second, so you pay 150% of one item's price for two items — equivalent to a 25% discount on the combined total, not 50%.