An invoice, specifically a commercial invoice in the context of international trade, is a legal document required by customs that serves multiple purposes. Firstly, it aids customs officials in quickly determining the applicable tariffs, duties, and taxes for a specific product or products being imported or exported. Secondly, it functions as a contractual agreement and proof of sale between a seller and buyer located in different countries. When seeking clearance for import or export, the commercial invoice is presented to customs officials, who utilize the information provided to assess the required taxes. By efficiently conveying product details, commercial invoices help facilitate smooth operations in busy customs offices. Templates are available to assist in accurately completing commercial invoices by capturing all the necessary information related to the package or product.