4 min read
2026-03-09
A 20% discount + 10% discount ≠ 30%. The actual calculation: price × 0.8 × 0.9 = 28% off.
For "3 for the price of 2" promotions, calculate the cost per item.
A 50% discount on $100 = $50, but a 50% discount on the already-discounted price of $50 = $25.
Shipping, fees, and packaging can eat into the savings from a discount.
Get accurate results with the Discount Calculator.
See also: Percentage Calculator, Tip Calculator