Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.This is to notify the bank that my. (Relationship with deceased). Send the completed form to your local SSA office. Please give pages 2 and 3 of this form to any survivors of the deceased. I am writing to you with condolences in regards to Name of deceased who died on Date of Death. To open an estate proceeding, you first must file a petition and other forms with the court. Start the letter with your introduction and the reason for writing the letter. Checklist; Notify the Assessor; Affidavit of Death; Inheriting Property; Death Certificates; Forms; FAQs.