Discount Calculator

What this discount calculator does

This calculator finds the final price after a discount and the amount saved. It supports a percentage discount, such as 15% off, and a fixed dollar discount, such as $20 off.

The result also shows the effective discount percentage, which is useful when the discount is entered as a dollar amount.

How to use this calculator

1. Choose Percent off or Fixed amount off.
2. Enter the original price.
3. Enter the discount as a percentage or dollar amount.
4. Click Calculate.

The default example applies a 15% discount to a $59.99 price. The price after discount is $50.99 and the amount saved is $9.00.

Discount formulas

For a percent discount:

Amount saved = Original price × Discount / 100
Price after discount = Original price − Amount saved

For a fixed discount:

Amount saved = Discount amount
Price after discount = Original price − Discount amount

The effective discount percentage is the amount saved divided by the original price.

What the results include

• Price before discount: the original price.
• Amount saved: the discount in dollars.
• Discount percentage: the effective percentage saved.
• Price after discount: the final price.

Assumptions and limitations

The calculator applies a single discount to a single price. It does not model stacked discounts, sales tax, coupons with minimum purchases, shipping thresholds, or cash-back rewards. A fixed discount cannot exceed the original price.

Frequently asked questions

Is 20% off the same as 20% of the price?

Yes, for a percent discount. The amount saved is 20% of the original price, and the final price is 80% of the original price.

Can I stack two discounts?

This version applies one discount. Stacked discounts are not modeled; applying 20% and then 10% is not the same as a single 30% discount.

Does the calculator include sales tax?

No. It shows the discounted price before tax. Add sales tax separately if needed.

What if the discount is larger than the price?

A fixed discount larger than the price is rejected. A percentage discount above 100% is also rejected.

Source

References:

• Consumer Financial Protection Bureau — Consumer Tools
• Federal Trade Commission — Advertising and Marketing on the Internet

Disclaimer

This calculator is for informational purposes only. It is not a pricing or legal opinion. Confirm promotion terms with the seller.