Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.Start the letter with your introduction and the reason for writing the letter. The Transfer on Death Letter of Authorization enables distribution of a decedent's account holdings upon death. Where a Death Certificate is not yet available, we can accept an Interim Death Certificate upon notification. We will process your application according to all the supporting documents submitted. If you have lost a loved one, we're here to help support you through managing the process of dealing with their banking. Relationship to the decedent must be entered in the space provided at the bottom of this form when requesting cause of death. Common reasons for needing a medallion signature guarantee. What is a Worthless Check?