How is the discount calculated?

Discount amount = Original Price × (Discount % / 100). Sale Price = Original Price - Discount Amount. For example, 25% off $80: discount = $80 × 0.25 = $20, sale price = $80 - $20 = $60.

How do stacked discounts work?

Stacked discounts (e.g., 20% off + additional 10% off) are NOT the same as 30% off. A 20% discount followed by 10% = $100 → $80 → $72 (28% total), not $70 (30%). Each discount applies to the already-reduced price.

Is tax calculated before or after the discount?

Tax is typically calculated on the discounted (sale) price, not the original price. If a $100 item is 20% off, you pay tax on $80, not $100. This tool calculates tax on the post-discount price.

How do I calculate the discount percentage from two prices?

Discount % = ((Original - Sale) / Original) × 100. For example, if an item dropped from $80 to $60: ((80-60)/80) × 100 = 25% off.

Free Converter

Discount Calculator

Calculate discounts, sale prices, and savings instantly. Works for any percentage off.

Original Price ($)

Discount (%)

Quick Discounts

Add Tax (%) (optional)

You Save

$20.00

Final Price

$80.00

Discount

20.00%

Original Price

$100.00

Final PriceYou Save

80.0%20.0% off

About This Tool

Calculate sale prices, savings amounts, and discount percentages. Enter the original price and discount percentage to see the final price and how much you save. Or enter original and sale prices to find the discount percentage. Supports additional tax calculation on the discounted price.

How to Use

Enter the original price of the item.
Enter the discount percentage (e.g., 25% off).
View the sale price and total savings amount.
Optionally add tax rate to see the final price after tax.

Frequently Asked Questions

How is the discount calculated?: Discount amount = Original Price × (Discount % / 100). Sale Price = Original Price - Discount Amount. For example, 25% off $80: discount = $80 × 0.25 = $20, sale price = $80 - $20 = $60.
How do stacked discounts work?: Stacked discounts (e.g., 20% off + additional 10% off) are NOT the same as 30% off. A 20% discount followed by 10% = $100 → $80 → $72 (28% total), not $70 (30%). Each discount applies to the already-reduced price.
Is tax calculated before or after the discount?: Tax is typically calculated on the discounted (sale) price, not the original price. If a $100 item is 20% off, you pay tax on $80, not $100. This tool calculates tax on the post-discount price.
How do I calculate the discount percentage from two prices?: Discount % = ((Original - Sale) / Original) × 100. For example, if an item dropped from $80 to $60: ((80-60)/80) × 100 = 25% off.

Discount Calculator

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