Do you know how to find out if you are a beneficiary on a bank account? DISCLAIMER: Our Self-Help Center staff is not your private attorney and does not represent any party.A death certificate and a Small Estate Affidavit should do it, if he was not married and had no children. This is to notify the bank that my. (Relationship with deceased). How Do You Get a Letter of Testamentary Without a Will? Do I Need Letters Testamentary or Letters of Administration in California? Also, if your name is written on a power of attorney document besides being named in the bank account as the next to kin. For example, are you a joint owner of the account? Do I have to fill out the same application to renew my permit?