Discount Calculator

Calculate the final price for single or stacked discounts. Find out the true effective discount when combining multiple coupons or promotions.

Original Price

Discount

You Save $20.00

Final Price $80.00

Why Stacked Discounts Aren't Additive

A common misconception is that stacking a 20% and 10% discount gives 30% off. It doesn't — here's why:

Discounts Applied	On $100	Naive Sum	Actual Effective
20% + 10%	$72.00	30%	28.00%
15% + 15%	$72.25	30%	27.75%
10% + 10% + 10%	$72.90	30%	27.10%
50% + 20%	$40.00	70%	60.00%

Frequently Asked Questions

What is a discount calculator? ▼

A discount calculator finds the final price after applying a percentage reduction. Enter the original price and discount percentage to get instant savings and final price.

How do stacked discounts work? ▼

Stacked discounts are applied sequentially, not additively. A 20% discount followed by a 10% discount is NOT 30% off — it is 28% off. Each discount applies to the already-reduced price.

Is 20% off + 10% off the same as 30% off? ▼

No. 20% off $100 = $80. Then 10% off $80 = $72. Total savings = $28 (28% effective discount), not $30 (30%).

How do I calculate the effective discount of stacked coupons? ▼

Use the Stacked Discounts mode. Enter each coupon/discount percentage and the calculator shows the true effective discount and step-by-step breakdown.

What is the formula for discount? ▼

Discounted Price = Original Price × (1 − Discount%/100). Savings = Original Price × Discount%/100.

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