Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.This is to notify the bank that my. (Relationship with deceased). The sender's and the receiver's addresses should be mentioned in the death claim letter format for bank properly. Enter the 6 letters or numbers shown within the image above. Letters are not case-sensitive. Include all names the person may have been known by, especially if those names are listed on the Will, death certificate, or assets. This is to inform you that (Full Name) died on (Month, Date, Year). Please send me the neces sary instructions to complete a claim under policy number(s).