What is the official business definition of 4/10 N/30? This is a financial term that describes the terms of a credit transaction between a business and one of their customers. In this transaction, the customer is allowed to purchase goods and services on credit, meaning they can make a purchase and then make payment after a certain period of time. Specifically, the 4/10 N/30 means that the customer can purchase goods or services and then if they make payment within 10 days of the purchase, they will receive a 4% discount. If the customer fails to make payment within the 10 day period, they must make it by the 30 days otherwise they might be subject to a late fee or other penalties. This type of transaction is most often used by businesses that are selling goods or services to customers on credit, as it allows them to offer discounts for early payment while also protecting them from customers who may not pay on time.