The banner screams STACKED SAVINGS. Your brain adds 40 and 20 and expects 60% off. The checkout disagrees. This one misunderstanding costs shoppers real money every single sale season.
How stacked discounts really work
Discounts apply one after another to the shrinking price. Take $100: 40% off makes it $60, then the extra 20% comes off $60, making it $48. Your real saving is 52%, not 60% - and on a $500 TV that gap is $40 you thought you were saving but were not.
Then tax arrives (in the USA)
In most US states sales tax is calculated on the discounted price and added at the register, which is why the final total often surprises visitors from the UK, where shelf prices already include VAT. Knowing the after tax number before you queue changes buying decisions.
The two second habit that protects your wallet
Before any 'huge' sale purchase, type the price and both discount percentages into a discount calculator. If the true saving still excites you, buy it happily. If not, walk away with the money.
See the true final price with our free Discount Calculator.
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