Step 1: Prepare and file the following forms (you will need to provide the original and at least one photocopy of each form). This page tells you about: What is probate?Is probate necessary? 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. Out-of-state probate can be confusing to navigate alone. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. Detailed steps for completing probate on a Will in California, on your own or with an attorney. Exactly what happens in a California Probate Court? Phone: 408-299-5540.