To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. My Commission Expires: (Signature and Seal of Notary or other official qualified to administer oaths.Show date of expiration of Notary's Commission.). These forms helpful when handling the estate of a deceased person. If you have questions, consult with an attorney. The bank will not allow you to close it unless you have a letter of authorization from the probate court. Most banks will have their own individual procedure for closing a bank account after the title holder of the account passes away. To be recognized as the estate administrator, you must file the petition for grant of letters of administration with the Register of Wills. The first step is to probate the Will. State relevant circumstances (e.g.