To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. The Decedent's Estate Account uses the PC583 Form (PDF).Note: Please type or print neatly in black or blue ink. File the form, the decedent's will (if there is one), and a certified copy of the death certificate with the county probate court where the decedent lived. When the estate is ready for closing, you are also required to file a final account with a description of property remaining in the estate. You can use our Do-It-Yourself Settling a Small Estate tool to complete the affidavit. Sign it in front of a notary.