About the Discount Calculator
A discount lowers a price by a percentage. Enter the original price and one or two discounts to see the final sale price, how much you save, and optionally the total after tax.
How it’s calculated
Sale price = price × (1 − d1) × (1 − d2). Savings = price − sale price.
Example calculation
A $80 item at 25% off is $60 — a $20 saving.
Frequently asked questions
How do stacked discounts work?
They apply one after another, not added together. 20% off then 10% off is not 30% off — it's 0.8 × 0.9 = 0.72, a 28% total discount.
Can I include sales tax?
Yes — add a tax rate and the calculator shows the after-tax total on the discounted price.
This tool provides estimates for general informational and educational purposes only. Results are based on the values you enter and standard formulas, and may not reflect your specific circumstances.