Calculator

Discount Calculator

Find the sale price, savings and after-tax total in seconds.

UNDERSTAND THE ANSWER

How is this calculated?

The discount is subtracted first. Sales tax is then applied to the discounted price.

Sale price formulaSale price = Original price × (1 − Discount ÷ 100)

A 20% discount on $129 saves $25.80. Before tax, the sale price is $103.20.

COMMON QUESTIONS

Is tax calculated before or after the discount?

This tool applies tax after the discount, which is common, but local rules can vary.

Can the discount exceed 100%?

No. The calculator limits discounts to the range from 0% to 100%.

How do I calculate 20% off?

Multiply the original price by 0.20 to find savings, then subtract that amount from the original price.

How do stacked discounts work?

Apply each discount to the remaining price. For example, 20% then 10% equals a 28% total reduction, not 30%.

What percentage of the price remains?

Subtract the discount percentage from 100%. A 25% discount leaves 75% of the original price.

Does this calculator include sales tax?

Yes. Enter the tax percentage and it will be applied to the discounted price.

How do I find the original price from a sale price?

Divide the sale price by one minus the discount rate expressed as a decimal.