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). To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. Streamline legal processes with our affidavit of death and TOD deed form resources. Online: Use our online form to notify us about a customer's death. Any amount meeting Nevada abandoned property requirements is reportable. Moreover, you must write it to the bank manager and request them for the settlement of the deceased individual's bank account. You will need to provide a certified copy of the death certificate, a copy of your identification, and proof of your authority over the estate (e.g.