Discount Calculator
Calculate sale prices, stacked discounts and how much you save.
How to use the Discount Calculator
Enter the original price and discount — add an extra coupon and sales tax if you like — to see the final price and your real savings.
Formula
Final = Price × (1 − d₁) × (1 − d₂) × (1 + tax)
Worked example
25% off then an extra 10% off is a 32.5% total discount, not 35%.
Frequently asked questions
Are stacked discounts additive?
No. The second discount applies to the already-reduced price, so 25% + 10% equals 32.5% off.
Results are estimates for educational and planning purposes. Always confirm important financial, health or legal decisions with a qualified professional. Last reviewed 2026-09-27.