Discount Calculator

A percentage discount shaves a slice off the original tag price. Sale price = original × (1 − discount ÷ 100), and savings = original − sale price. Retailers quote the percent off ("25% off") more often than the final dollar amount — this calculator converts the percent you see into what you actually pay at the register before tax.

With the default values ($79.99 original, 25% off), the math is 79.99 × 0.75 = $59.99 sale price and $79.99 − $59.99 = $20.00 saved. The summary line shows both dollar savings and the discount rate so you can compare against a competing offer that might advertise "$15 off" instead of a percent.

Stacked promotions are where shoppers most often overestimate savings. A 20% storewide sale plus an extra 10% coupon does not equal 30% off the original price. The second discount applies to the already-reduced price: after 20% off $79.99 you pay $63.99; another 10% off that is $57.59, which is roughly 28% off original — not 30%. Run each discount as its own step or use decrease mode twice on the percentage calculator.

Compare unit prices when choosing package sizes on sale. A smaller bottle at 30% off can still cost more per ounce than a larger bottle at 10% off. Discount percent alone does not tell you which deal is cheaper per unit — pair this tool with the unit price calculator when stocking pantry staples.

Common mistakes include entering the sale price in the original field (which inflates savings), forgetting that "up to 50% off" applies only to selected SKUs, and assuming employee discounts stack with clearance tags the same way at every retailer. Always read the fine print on coupon exclusions.

Tax and checkout fees sit outside this estimate. In most US states, sales tax applies to the post-discount subtotal, not the pre-markdown tag. Enter the shelf price before tax here, then use the sales tax calculator on the discounted subtotal if you want a out-the-door total.

Member-only sale prices require the membership cost in your comparison — a 25% club discount plus $60 annual fee may lose to a 15% supermarket sale on small baskets. This page compares sticker math only.

Price anchoring tricks use inflated "original" prices to make 50% off look dramatic — verify the pre-sale price was real, not a fictional MSRP, before celebrating savings.

Black Friday doorbusters sometimes discount a loss-leader while other SKUs stay full price — run each item separately rather than assuming one percent applies to the whole cart.

Outlet mall "compare at" prices may not reflect current mainline retail — use a price you could actually pay elsewhere as the original input for honest savings math.

Employee discount on top of sale price applies sequentially — run 25% employee discount on the already-reduced sale number, not on the original tag alone.

Cashback apps that reimburse 5% after purchase differ from instant discount — subtract expected cashback mentally after using this percent-off estimate.

Compare final out-the-door price including tax using the sales tax calculator on the sale price this tool outputs — discount first, then tax on the reduced subtotal.

Loyalty points redeemable for dollars off behave like delayed discount — convert points to cash value before comparing to an instant percent-off sale.

Free shipping thresholds encourage adding filler items — compare total cart cost including shipping on both sides, not discount percent alone on one SKU.

Limits: this is single-step percent-off math. It does not model BOGO (buy-one-get-one) deals, mail-in rebates, loyalty points, or tiered discounts ("spend $100, save $20"). For fixed-dollar-off promotions, subtract the dollar amount manually from the original price instead of using a percent.