Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.The procedure is very simple. Get the death certificate and legal heir certificate. 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. Tell us about a bereavement. You can submit a Notification of a Deceased Customer form below.