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. This is to notify the bank that my. (Relationship with deceased). Click on the link(s) for the forms you'd like to download. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. The instructions is a complete list of the required documents to verify that you are the rightful owner of the claim. This person will be able to access the money in your account when you die. Call or visit your local bank branch to find out how to name a POD beneficiary.