Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.Start the letter with your introduction and the reason for writing the letter. This is to notify the bank that my. (Relationship with deceased). You can use this letter template to write to the bank to request the closure of a direct payments account following the death of the account holder. This set provides coverage of every aspect of probate law and estate and trust administration in Texas. It includes sample forms and letters. This letter is from an executor notifying a bank about an account holder's death.