In this article, we walk you through all the steps to writing and formatting the letter, including a sample and a template. A bank closure letter may be needed if you want to close a bank account without having to go to your bank's physical location.Please be advised that I have recently changed banks and would like you to close the following accounts held at your institution. Want to close a bank account? You might need to submit a written request. This article will give you the reasons why you should close your bank account. Sample account closing letters are also given for your better understanding. It can be as simple as "we are closing your account as of X date. At ANZ we'll guide you through the deceased estate process and work with you to settle any accounts. The first step is to notify us.