How this calculator works
The saving is the original price multiplied by the discount fraction. The sale price keeps the remaining fraction. The calculation applies one reduction before tax. It does not stack coupons or apply minimum-spend conditions, and it rounds each displayed amount only after calculating.
Formula
Saving = P × d; sale price = P × (1-d). P is the original price and d is the discount as a fraction between 0 and 1. A 100% discount leaves a $0 price.
Worked example
Taking 15% off $79.99 saves $12.00 and gives a $67.99 sale price after rounding. Taking 100% off $20 saves $20 and leaves $0 to pay before any separate charges.
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Frequently asked questions
Does this include sales tax?
No. Apply the appropriate sales tax to the discounted price separately. The sales tax calculator can estimate that next step.
Are two 20% discounts the same as 40% off?
No. A second discount normally applies to the already reduced price. This tool handles one percentage discount at a time.
What happens at a 0% discount?
The sale price equals the original price and the saving is $0. The page applies whatever single percentage you enter.