Most discount codes follow one of a few structures. Knowing the format helps you judge the value of an offer quickly.
Percentage off
Percentage discounts
A set share of the eligible subtotal is taken off, so the saving grows with the size of your order.
Fixed value
Fixed-value reductions
A set currency amount is deducted from your total, which is simplest to compare on smaller purchases.
Threshold
Threshold codes
The discount applies only once your cart reaches a stated minimum, so check the spend requirement first.
Before you apply
Check expiry and exclusions first
Every code carries its own terms. Confirm the end date, whether the retailer excludes sale items or certain brands, and any minimum order before you reach checkout. A code that does not apply is easier to resolve when you know the rules in advance.