One thing for sure is that the bank will want to know the specific reasons for the removal request as the next-to-kin. Step 1: Prepare and file the following forms (you will need to provide the original and at least one photocopy of each form).The best way to avoid any issues with accessing the bank accounts of deceased family members is to have a clear and up-to-date estate plan in place. Discover the precise steps to secure Letters of Testamentary in California. Our comprehensive guide makes the process straightforward and hassle-free. Next–of–kin. Family members, who are in the closest relationship to the decedent. I live in California and my spouse passed away. He had a bank account in his name. Discover the precise steps to secure Letters of Testamentary in California. Our comprehensive guide makes the process straightforward and hassle-free.