The process of claiming a bank account after death varies based on a number of factors. Here's how to claim a deceased person's bank accounts.This page tells you about: What is probate? Is probate necessary? Fill it out for the deceased, but don't forge the name. It must be at least 40 days since the decedent died. All of the decedent's unsecured debts must have been paid. The next step is opening a bank account for the estate. Filing a probate petition requires a valid will and the decedent's death certificate. Usually, the funeral home provides the death certificate.