There's no special format so long as who you are and the purpose of the letter is clear. Notify Bank of America.We'll ask you for the deceased customer's full legal name and Social Security number to identify their accounts. This document provides instructions for a scam known as the "Next of Kin" or "N. I need to write to several organisations including banks, insurance and mortgager company to inform them of my partners death. Explore Next of kin Application Forms and find the form that suits your needs. Also, if your name is written on a power of attorney document besides being named in the bank account as the next to kin. "next of kin" in the bank's account opening form, the deceased intended for Mrs.