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. When you open a bank account for the estate, the account name must indicate that it is a guardianship account and not your personal account.