Invoicing is the process of creating and sending a document, known as an invoice, to request payment for goods or services provided. An invoice typically includes details such as the seller's and buyer's information, a description of the products or services, the amount due, and payment terms. It serves as a formal record of the transaction. Invoices are essential for businesses to track sales and manage cash flow. They help ensure that payments are received on time and provide a clear reference for both the seller and buyer in case of disputes. Proper invoicing is crucial for maintaining financial organization.