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). You'll need the person's Social Security number and certified copies of their death certificate for most agencies and programs. Social Security and Medicare. Closing a bank account when someone passes away isn't difficult, as long as you have the right paperwork for the the teller or banker. 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. Send the completed form to your local SSA office.