GSCalculate

Discount Calculator

Calculate sale price and savings from any discount percent. Optional sales tax for an estimated checkout total — free, instant shopping math.

Reviewed / updated August 4, 2026

Your inputs

USD

Sticker or list price before the discount

Discount percentage

%
25
%

Applied to the sale price for an estimated checkout total

Result

Sale price

$60.00

25% off $80.00

Original price
$80.00
You save
$20.00
Sale price
$60.00
Est. sales tax
$0.00
Est. total with tax
$60.00

A 25% sale saves $20.00 before tax. That is a strong retail markdown in many US stores.

Compare discount scenarios

OffSaleSave
20%$64.00$16.00
25%$60.00$20.00
30%$56.00$24.00

Suggested next steps

  • Add your local sales tax % to see checkout total, not just the sticker sale price.
  • If the item is final sale, factor return policy into whether the discount is worth it.
  • Pair with the Tip Calculator if you’re estimating a service total after shopping.

How the discount calculation works

A sale price is the original price minus a percentage markdown:

  1. Savings = original price × (discount% ÷ 100)
  2. Sale price = original price − savings
  3. Optional sales tax = sale price × (tax% ÷ 100)
  4. Estimated total = sale price + sales tax

Presets (10%, 15%, 20%, 25%, 30%, 50%) and a 0–90% slider update results instantly. A pie chart contrasts what you pay versus what you save, and a small scenario table compares common retail markdowns side by side.

Rule-based tips describe whether the discount is modest or deep and remind you to confirm tax and return rules.

Worked example

Original price $80, discount 25%, sales tax 0%:

  1. Savings = 80 × 0.25 = $20.00
  2. Sale price = 80 − 20 = $60.00

If sales tax were 8% on the sale price:

  1. Tax = 60 × 0.08 = $4.80
  2. Estimated total = 60 + 4.80 = $64.80

At 30% off the same $80 item, savings rise to $24 and the sale price falls to $56 before tax.

Methodology and notes

All math runs in your browser in USD formatting. Stacking coupons, BOGO deals, and membership pricing can change the effective discount in ways a single percentage cannot capture — use the result as a clear baseline, then adjust for store-specific rules.

Frequently asked questions

Multiply the original price by the discount percent (divided by 100) to get the dollar savings. Subtract that savings from the original price for the sale price. Example: 25% off $80 saves $20 and leaves a $60 sale price.

Related tools

Related calculators — live tools and upcoming pages for internal linking.