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. In general, you can't.The bank will not allow you to close it unless you have a letter of authorization from the probate court. Bank accounts that are solely in your name can be held up temporarily upon your death. To close a bank account after death, you must completely liquidate its funds. The letters cite reasons for closure such as relocating, no longer needing the account, job changes, and death of an account holder. How do we close the accounts? After you've told us about the death, you may need to complete an account closure form. There are generally two basic types of letters, based on whether the estate is testate (with a will) or intestate (without a will). The bank says I need the death certificate (which I have) and a letter testamentary (which I do not have).