In Finance, a letter of transmittal is a type of cover letter that accompanies a document, such as a financial report or security certificate. In Finance, a letter of transmittal is a type of cover letter that accompanies a document, such as a financial report or security certificate. Within financial markets it is used by a security holder to accompany certificates surrendered in an exchange or corporate action. A Transmittal Letter is a business letter and is formatted accordingly, it should include the recipient's address, sender's address, distribution list, a salutation and closing. It typically includes why it should receive the reader's consideration, and what the reader should do with it. The transmittal letter provides the recipient with a specific context in which to place the larger document or certificate and simultaneously gives the sender a permanent record of having sent the material.