This packet contains general information and instructions about closing the estate as personal representative, whether there was a will or not. Question: My mother passed away.She does have a will and I was nominated as the executer and trustee. Fill it out for the deceased, but don't forge the name. I am named in the Will of the person who died, a copy of which is attached to this Affidavit. Do you need to find an executor checklist for what to do when someone passes away in Arizona? Click here to see our recommendations. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. The bank will not allow you to close it unless you have a letter of authorization from the probate court. (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.