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. Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format. How To Fill In an Affidavit of Death. To designate a POD Beneficiary or Beneficiaries on your account, please complete the information below. This designation applies only to the account. Step 1: Notice the decedent's family members of your intention to proceed with the Affidavit of Entitlement. Step 2: Collect information.