In this article, we walk you through all the steps to writing and formatting the letter, including a sample and a template. 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. Please accept this letter as my written authorization to close the following account(s) at your financial institution. Want to close a bank account? You might need to submit a written request. Edit, sign, and share sample letter to close trust account online. No need to install software, just go to DocHub, and sign up instantly and for free. Please be advised that I have recently changed banks and would like you to close the following accounts held at your institution.