Calculators

Discount Calculator

Find savings and final price after discount

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About this tool

Discount Calculator answers the questions shoppers and retailers face every day: what is the final price after a given percentage off, and how much money is saved? Enter the original price and the discount percentage, optionally add a sales-tax rate, and click Calculate. The result shows three figures: the amount you save, the sale price after the discount, and the final price with tax, where tax is applied to the already-discounted price. Results are shown to two decimal places and work with any currency — dollars, euros, pounds or rupees — because no exchange rate is involved. For a promotion that stacks two discounts, run the sale price back through the tool with the second percentage: 30% off followed by an extra 10% off is 37% off the original, not 40%. Everything runs in your browser.

Why use it

  • Exact Money Saved: Shows the absolute saving alongside the sale price, so you can decide whether a deal is worth it. A 40% discount on a cheap item may save less than a 15% discount on an expensive one.

  • Price After Tax: Add your local sales-tax rate to see what you will actually pay at the register, with tax charged on the discounted price.

  • Handles Stacked Deals Step by Step: For a second discount, enter the sale price as the new original price and calculate again — this reproduces how stacked promotions really compound.

  • Input Checks: The tool flags a missing price, a discount outside 0–100%, or a negative tax rate instead of showing a misleading figure.

  • Currency-agnostic: Works with any currency because no exchange rate is involved. Enter the number and read the result in whatever currency you are using.

How to use

  1. Enter the original or list price in the Original price field
  2. Enter the discount percentage, from 0 to 100
  3. Optionally enter a Tax % — it is applied after the discount
  4. Click Calculate
  5. Read You save, Sale price and Final with tax in the results panel

When it helps

  • When a store advertises 25% off and you want to know the final price before reaching the checkout
  • When you want to see what you will pay after both a discount and sales tax
  • When planning a product promotion and need to calculate what price to display at different discount levels
  • When comparing two deals on different products to find out which one saves more in absolute monetary terms
  • When working through a stacked coupon one discount at a time

Examples

Single discount

Input

Original price: 120, Discount: 25%

Expected result

You save: 30.00 — Sale price: 90.00 — Final with tax: 90.00

Sale item with sales tax

Input

Original price: 80, Discount: 15%, Tax %: 8

Expected result

You save: 12.00 — Sale price: 68.00 — Final with tax: 73.44

Stacked discount, second step

Input

Original price: 140 (after 30% off 200), Discount: 10%

Expected result

You save: 14.00 — Sale price: 126.00 (37% off the original 200)

Tips

  • Two stacked discounts of 30% and 10% equal 37% off — not 40%. Run the sale price through a second time to see the real final price
  • To check a retailer's 'was' price, divide the sale price by (1 − discount) and compare it with the tag
  • Leave Tax % empty when the shelf price already includes VAT or GST
  • BOGO 50% off the second item is a 25% effective discount on both items together — not 50%

Frequently Asked Questions

How do stacked discounts compound?
With stacked discounts, the second percentage is applied to the already-reduced price, not the original. For a $100 item with 30% off then 10% off: first step gives $70, second step takes 10% of $70 to give $63. The effective discount is 37%, not 40%. In this tool, calculate the first discount, then enter the sale price as the new original price for the second.
Is 30% off then 10% off the same as 40% off?
No — it is 37% off. Stacking two percentage discounts always produces a combined rate that is less than their arithmetic sum because the second discount applies to a smaller base. The formula for two stacked rates a and b is: effective rate = 1 − (1 − a/100) × (1 − b/100).
How do I find the original price from a sale price?
Divide the sale price by (1 − discount rate). For a sale price of $75 at 25% off, the original is $75 ÷ 0.75 = $100. This tool works forwards from the original price, so do that division yourself, then enter the result to confirm the discount.
Is tax applied before or after the discount?
After. The tool takes the discount off first and then adds tax to the sale price, which matches how sales tax is usually charged in the US. If your price already includes VAT, leave the Tax % field empty.
What is BOGO (buy-one-get-one) effective discount?
BOGO means you buy one item at full price and receive a second free, so the effective per-item discount is 50% if both items are the same price. BOGO 50% (second item at half price) is a 25% effective discount on the pair. To check it here, enter the price of both items and a 25% discount.
How do clearance discounts differ from coupons?
Clearance discounts reduce the shelf or list price directly, so the reduced price is what you pay before any coupons. Coupons typically apply to the stated selling price and can sometimes stack with clearance markdowns, though retailer policies vary.
What is the difference between discount and rebate?
A discount reduces the purchase price at the point of sale — you pay less immediately. A rebate is a partial refund claimed after purchase, often requiring a form submission or receipt upload. The immediate value is the same if both are honoured, but rebates carry a redemption risk and a time delay.

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Glossary

List Price
The standard, undiscounted price at which a product is offered before any promotions, coupons, or markdowns are applied. Also called the original price, retail price, or marked price.
Sale Price
The price a buyer actually pays after a discount has been applied. Equal to the list price minus the discount amount.
Discount Rate
The percentage by which a price is reduced. A 25% discount rate means the buyer pays 75% of the list price.
Effective Discount
The true combined percentage reduction when two or more discounts are stacked. Always less than the arithmetic sum of the individual rates because each successive discount applies to a smaller base.
Markdown
A permanent or semi-permanent reduction in the selling price of a product, typically used for clearance of slow-moving inventory. Distinguished from a promotional discount, which is temporary.
Stacked Discount
A pricing structure where a second discount is applied to an already-discounted price rather than to the original. Stacked discounts compound mathematically: the effective rate is 1 − (1 − d1) × (1 − d2).
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