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Discount Calculator

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Runs entirely in your browser — your numbers are never sent anywhere.

You pay
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Detail

This price at standard discounts

What will you actually pay?

A "25% off" tag tells you the discount, not the price. This calculator finishes the thought: enter the price and the percentage and get the amount you will actually hand over, plus exactly what you save. It also handles the two wrinkles real shopping adds — a second, stacked discount ("extra 10% off already-reduced prices") and sales tax charged on the discounted price — so the number here matches the number at the till.

The math, including the stacking trap

Sale price = Price × (1 − Discount ÷ 100) · Stacked: apply twice, once per discount

The single most common discount mistake: adding stacked percentages. 25% off followed by 10% off is not 35% off. The second discount applies to the already-reduced price: $120 → $90 → $81, an effective discount of 32.5%. Stores phrase promotions to blur this; the stage-by-stage table above keeps every step visible. Sales tax, where it applies, is normally charged on the discounted price, which slightly increases your real saving — the calculator follows that standard order (discounts first, then tax).

Reading sale claims critically

"Up to 70% off" means at least one item somewhere is 70% off. "Was/now" pricing is only meaningful if the "was" price was real. The defence is exactly what this tool does: convert every claim into the final dollars for the item in your hand, then decide if that price is good — comparing the discounted price, never the discount percentage, against other sellers. The Percentage Calculator covers the reverse question (what percent off is this price drop?), and the Sales Tax Calculator isolates the tax part.

Worked example

A $120 jacket at 25% off costs $90.00 — a saving of $30. Add an extra 10% stacked discount and it drops to $81, an effective 32.5% off, not 35%.

How to use this calculator

  1. Enter the original price.
  2. Enter the discount percentage.
  3. If there's a second stacked discount or sales tax, enter those too.
  4. Read the final price in the green panel and the saving in the stats.

Discount landmarks worth memorising

10% off is the price minus a tenth; 25% off means paying three quarters; a third off (~33%) means paying two thirds; half price is unambiguous. For quick estimates in the aisle, the table below the calculator prices your exact item at ten standard discount levels at once.

Frequently asked questions

Why don't two discounts add up?
Because the second percentage is taken from the reduced price, not the original. 10% of $90 is $9, not the $12 that 10% of $120 would be. Multiplication is the correct model: (1 − 0.25) × (1 − 0.10) = 0.675 of the price remains.
Is tax charged before or after the discount?
In most US states, sales tax applies to the price after store discounts (manufacturer rebates are treated differently in some states). This calculator discounts first, then taxes — the common case.
How do I find the percent off from two prices?
Divide the drop by the original price and multiply by 100: ($120 − $90) ÷ $120 = 25%. The Percentage Calculator's change mode does it directly.
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