Contact the Probate Department to schedule an appointment. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account.When a person dies and leaves a will with assets in their name only, the will must go through a probate process. This process proves that the will is valid. You must complete an Application for Death Certificate. You must show valid identification. The bank will not allow you to close it unless you have a letter of authorization from the probate court. After someone dies, notify the government programs and businesses they used. Cancel benefits payments and close or transfer accounts. You can get this form from the Register of Wills when you turn in the Petition for Probate in Step One.