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). What do you write in a death notice? To sum up, I want to inform you that my husband died in a car accident on 28th July 2022. Moreover, he has a savings bank account in your bank. I need to write to several organisations including banks, insurance and mortgager company to inform them of my partners death. You can request copies of bank statements, mortgage documents, and other financial information from the deceased person's bank or financial institution. Transportation Code Section 501.001.