Discount Calculator — Sale Price & Savings

Frequently Asked Questions

How do stacked discounts work?▾

Stacked (or sequential) discounts are applied one after another, not added together. A 30% discount followed by 20% off is calculated as: original price × 0.70 × 0.80 = 56% of the original, which equals a 44% total discount — not 50%. This calculator shows the exact math for each layer.

Is it better to get a percentage discount or a fixed amount off?▾

It depends on the price. On a $200 item, 15% off ($30) beats $25 off. On a $100 item, $25 off beats 15% off ($15). Enter both scenarios into the calculator to compare. For high-priced items, percentage discounts typically save more; for lower-priced items, fixed amounts often win.

Is sales tax calculated before or after the discount?▾

In most jurisdictions, sales tax is calculated on the discounted price, not the original price. This calculator applies tax after all discounts are subtracted, which is the standard method. Some regions or specific tax types may differ — check your local tax rules.

Does the order of stacked discounts matter?▾

Mathematically, the order of percentage discounts does not change the final price — 30% then 20% gives the same result as 20% then 30% (both equal 44% total discount). However, the breakdown display changes, showing different amounts saved at each step.