To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. (Arizona Revised Statutes, Section 14-3971)You would simply get the form and instructions from the court's website, fill out the form and have it notarized.Online: Use our online form to notify us about a customer's death. In this video, we discuss an important aspect of estate planning: how to prevent your bank accounts from being frozen at the time of your death. Is the Affidavit for Transfer of Title to Real Property completely filled out, with all questions answered? All estate accounts will then be closed, and a closing statement will be filed with the Court. All trust accounts will then be closed. An Affidavit of Death is used to close accounts, receive benefits, or take ownership of property, real estate, or securities. Joint deposit accounts may be retitled to remove the deceased customer. From there, we'll gather any documentation needed, make account changes and complete a funds disbursement.