It can be as simple as "we are closing your account as of X date. Include your name, address, account number, reason for closure, instructions for transferring any remaining balance, and a request for written confirmation. 2.Your bank may have an account closing letter template or form that you can download from its website or pick up at a branch. 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. Write a formal letter to your bank. Include your account information, state your wish to close the account, and provide instructions for any remaining balance. 8. This form must be signed in the presence of a notary public. Notary publics are available at most banks and currency exchanges for a minimal fee. The decedent's bank accounts will typically be closed down, and the money transferred to the estate account. Illinois Legal Aid has an online sample form along with instructions for filling it out.