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). A death claim letter format for bank is straightforward. Moreover, you just have to submit documents like a death certificate, ID proof, etc. Salutation Address the branch manager. The sender's and the receiver's addresses should be mentioned in the death claim letter format for bank properly. If its an E or S account, a simple letter with a copy of the death certificate will suffice. Bank has to do the rest.