Coupons are a type of special deal or discount offered to customers. Coupons may be offered by retailers, manufacturers, or other companies, and they usually have a unique code or number that can be used to redeem the offer. Coupons are often found in newspapers, magazines, online, or through other sources. Coupons are a great way for customers to save money as they shop. Retailers may also offer coupons as a way to entice customers to shop with them.