Proof of death, such as certified copies of the death certificate. The PDF version of these forms are FILLABLE.They can be filled out electronically, then printed. Notify Bank of America. We'll ask you for the deceased customer's full legal name and Social Security number to identify their accounts. Sub: Request to close an account due to death. An Affidavit of Death is used to close accounts, receive benefits, or take ownership of property, real estate, or securities. A death claim application letter for a bank is basically a letter to the bank stating that the account holder has been deceased. To close a bank account after death, you must completely liquidate its funds. In this video, we discuss an important aspect of estate planning: how to prevent your bank accounts from being frozen at the time of your death.