A finance invoice is a formal document used to record payment transactions between two or more parties. It serves as an evidence of terms and conditions set by the parties, such as the due dates of payments, details about the goods/services provided, and more. In addition to being an acknowledgement of a transaction, it also acts as a tax receipt for businesses. Having an accurate and up-to-date finance invoice system is essential for any company that sells products or services in order to keep track of sales, monitor cash flow, and comply with regulations.