How do stacked discounts work?

Stacked discounts apply sequentially, not additively. A 20% off followed by 10% off is not 30% off. After 20% off a $100 item, you have $80. Then 10% off $80 = $8, leaving $72. The effective discount is 28%, not 30%.

How do I calculate a percentage discount?

Final price = Original price × (1 - discount%/100). Savings = Original - Final. For example, 25% off $80: Final = $80 × 0.75 = $60, Savings = $20.

What is the effective discount for multiple discounts?

Effective discount = 1 - (1 - d1/100)(1 - d2/100)(1 - d3/100)... For 20% and 10%: 1 - (0.8)(0.9) = 1 - 0.72 = 28% effective discount.

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Discount Calculator

Calculate the final price after stacked discounts and see your total savings.

Discount Details

Enter price and up to three discounts

Original Price ($)

Discount 1 (%)

Discount 2 (%, optional)

Discount 3 (%, optional)

About the Discount Calculator

Stacked discounts are applied sequentially, not additively. A 20% discount followed by a 10% discount does not equal 30% off — it equals 28% off. Each discount is applied to the price remaining after the previous discount. This calculator shows you the step-by-step price after each discount, and the true effective discount percentage so you can comparison shop accurately.

For simpler single-discount calculations, our Percent Off Calculator lets you quickly find the sale price from any percentage off. It also includes a reverse mode to find the original price from the sale price and discount — useful when a tag only shows the discounted price.

After finding your discounted price, don't forget to factor in sales tax. Use our Sales Tax Calculator to find your true out-of-pocket cost, since taxes are calculated on the final discounted price in most jurisdictions.

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For a related calculation, use Percent Off Calculator to calculate the sale price and amount saved from any percent-off discount. Alternatively, use Sales Tax Calculator to add or remove sales tax from any price with our instant sales tax calculator.