Summary
Confirm the actual savings and checkout price when a percentage discount and sales tax apply.
Calculation details
The discount is deducted first. Any tax percentage is then applied only to the discounted price.
Formula
Discount = original price × discount rate. Discounted price = original price − discount. Final price = discounted price × (1 + tax rate).
Worked example
25% off a $120 item
The discount is $30. With 8% tax applied afterward, the final price is $97.20.
How it works
Enter the listed price, discount percentage, and optional tax percentage. A 100% discount produces a zero final price.
Frequently asked questions
What does this discount calculation estimate include?
It applies the discount first and optional tax to the reduced price afterward.
When is this discount calculation most useful?
When checking sale price and optional tax after a single percentage discount.
Are displayed values rounded?
The formula keeps full numeric precision. Values are rounded only when formatted for display.
Can actual results differ?
Yes. Stacked promos, exclusions, shipping, and local tax rules can change the checkout total.