Discount Calculator
Black Friday, clearance racks, coupon codes — this calculator tells you exactly what you save and what you actually pay, including tricky stacked discounts.
How to use this calculator
- Enter original price.
- Enter discount.
- Your results appear instantly below and update as you change the numbers.
How this calculator works
Savings equal the price times the discount percent; the final price is the original minus that. Worked example: $120 at 25% off saves $30 and costs $90. For a 40% off $250 item: $100 saved, $150 paid.
Frequently asked questions
How do I calculate a discount mentally?
Round the price and use easy fractions: 10% is one decimal place (move the point left), 20% is double that, 25% is a quarter, 50% is half. A $48 item at 25% off is about $12 off → $36.
Do stacked discounts add up?
No — each applies to the already-reduced price. 20% off then an extra 10% off is 28% total, not 30%: $100 → $80 → $72. The order does not matter mathematically.
What is the difference between off and off the final price?
Some stores apply coupons before tax, others after. The discount percent is the same, but a coupon after tax saves you the tax on the discounted amount too — usually a few cents to a few dollars on big purchases.
How do I find the original price if I know the sale price and discount?
Divide the sale price by (1 − discount). If an item sells for $90 at 25% off, the original was 90 ÷ 0.75 = $120.
Disclaimer: Results are estimates for general information only and do not constitute financial, tax, or legal advice. Figures reflect 2026 rules and may change. Always confirm current limits and consult a qualified professional before making decisions. Official figures: IRS.gov · 2026 limits per IRS tax inflation adjustments.