For the deceased's bank account, the account number and exact dollar amount in the account must be provided. Navigate estate closure with expert guidance.Learn how to limit liability and ensure fair distribution for beneficiaries today. When it comes to handling the decedent's bank accounts, we're here to make the process as simple and straightforward as possible. The bank will not allow you to close it unless you have a letter of authorization from the probate court. If there's a will without a named executor, the court will issue a Letter of Testamentary; if there's no will, the court will issue a Letter of Administration. If there is no Will, then the closest relative is named the Voluntary Administrator. To close a bank account after death, you must completely liquidate its funds. Also called a personal representative. If you do not have a lawyer and are representing yourself in a case, use these simplified instructions to help you fill out the Military Affidavit form.