No, billing and invoicing are not the same, although they appear to be related. In the business context, billing is when vendors charge you for their services or products, whereas invoicing is when you request payment for your services or products, detailing the type of service/product, when, who, and the payment due date. Therefore, invoicing software streamlines the payment request processes, while billing software makes it easy for you as a business to pay for services/products used.