Notify Bank of America. We'll ask you for the deceased customer's full legal name and Social Security number to identify their accounts.Learn more about how to apply to open a bank account or joint bank account at Bank of America. Review what you need to open a bank account online today. Include your name, address and account number on the letter. Quickly learn what a Letter of Instruction is and how to write one (2024 updated). Plus, grab the free template so you can take action! A bank letter is an official document from your bank that provides important information about your business' official bank account. You'll need to know: Your Bank of America account and ABA routing numbers; Your employer's name and address. Locate my account and routing number.