Discount Calculator — Final Price After Discount %
Final price and savings after one or more discounts.
The list price before any discount is applied.
Results
- Original price
- $200.00
- Discount (25%)
- −$50.00
- Final price
- $150.00
You save
$50.00 (25.00% off)
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Procurement teams don't get one discount — they negotiate stacks: volume + early-pay + auction-clear price. Procupy runs reverse auctions that surface every layer in one event, not three weeks of back-and-forth.
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Single discount formula
A single percentage discount is the simplest case. The formula is:
Final = Original × (1 − Discount%/100)
Example: a $200 item with 25% off becomes 200 × (1 − 0.25) = 200 × 0.75 = $150. You save $50, which is exactly 25% of the original.
Stacked discounts: the trick most people miss
When you see "20% off, plus an extra 10% off", your brain wants to add the two numbers and call it 30% off. It isn't. Stacked discounts compound multiplicatively, because each new discount applies to the already-reduced price, not the original.
The correct calculation: 0.80 × 0.90 = 0.72, which means the buyer pays 72% of the original — an effective 28% off, not 30%.
Worked example: a $100 jacket marked 20% off drops to $80. The extra 10% off coupon then takes 10% off $80, not off $100. So you pay $80 − $8 = $72, saving $28 in total. A flat 30% off would have been $70 — the stacked offer is two dollars worse for the buyer.
Reverse calculation
If you already know the final (discounted) price and the discount percentage, you can recover the original price by dividing:
Original = Final / (1 − Discount%/100)
Example: you paid $150 and the sign said 25% off. The original price was 150 / (1 − 0.25) = 150 / 0.75 = $200. This is useful for verifying that a "sale" is actually a sale, or for back-solving the list price when a vendor only quotes the net.
FAQs
How do I calculate a percentage off?
Multiply the original price by the discount percentage divided by 100, then subtract that from the original price. The shortcut is Final = Original × (1 − Discount%/100). For example, 25% off a $200 item is 200 × 0.75 = $150, and you save $50.
If something is 20% off then 10% off, is that 30% off?
No. Stacked discounts compound multiplicatively, not additively. 20% off followed by 10% off is 0.80 × 0.90 = 0.72, which is a 28% effective discount, not 30%. On a $100 item the final price is $72, so you save $28 — two dollars less than a flat 30% off would give you.
How do I find the original price from a discounted price?
Divide the final price by (1 − Discount%/100). For example, if you paid $150 and the tag said 25% off, the original price was 150 / 0.75 = $200. Use this calculator's formulas in reverse, or just plug numbers in and adjust until the final price matches what you paid.
What's the difference between a discount and a markdown?
A discount is a temporary reduction off the list price, usually tied to a promotion, customer segment, or negotiation. A markdown is a permanent reduction in the list price itself — typically because inventory isn't moving or the season has ended. Both lower what the buyer pays, but only markdowns change the reference price going forward.
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