When a person dies intestate, that person's property is distributed according to the law. In New York, that law is found in EPTL 4-1.1.A letter of instruction is a cheat sheet for anyone involved in settling your affairs. Unlike a will, this letter has no legal authority. If a person dies without a Will, then the proceeding filed is called administration and the property is divided according to the law. 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. We're here to help when a loved one passes away. The death of someone close to you is difficult, and dealing with his or her finances can feel overwhelming. Notify Bank of America.