Utilities & Bills

Discount Calculator

Calculate sale price after discount and the exact amount you save.

Whether it's a store sale, coupon, or promo code, this calculator gives you the final price and savings amount instantly, so you know exactly what something actually costs.

Calculator inputs

Enter your numbers

30%

Results update as you change the inputs. Calculations run in your browser.

Final Price

$104.99

you Save
$45.00
percent Off
30.0% total off
price Before Coupon
$104.99
See the formula

Formula and method

Final = Original × (1 - Discount%) - Coupon Amount

Percentage discount applied first, then flat coupon deducted from the discounted price.

Worked examples

Black Friday sale

Original Price ($):
199.99
Discount (%):
40
Additional Coupon ($):
20

Final Price: $99.99

Clearance item

Original Price ($):
85
Discount (%):
60
Additional Coupon ($):
0

Final Price: $34.00

Assumptions and limits

  • Percentage applied before flat coupon
  • Price cannot go below zero

This tool provides an educational estimate. Rules, rates and personal circumstances can change the answer. Review the assumptions before relying on a result. Report a correction.

Common mistakes to avoid

  • Adding percentage discounts directly — two 20% discounts do not equal 40% off.
  • Assuming stacked discounts are additive — a 20% off coupon on a 30% sale is 44% total, not 50%.

Frequently asked questions

Do stacked discounts add up?

No. A 20% sale followed by an extra 10% off coupon is 28% total, not 30%. Each discount is applied to the already-reduced price, not the original.

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