In this article, we walk you through all the steps to writing and formatting the letter, including a sample and a template. In this blog, we'll explore the essential steps and provide a sample letter template to guide you through writing a formal letter for closing your bank account.Want to close a bank account? You might need to submit a written request. To whom it may concern: Please accept this letter as my written authorization to close the following account(s) at your financial institution. You can use WalletHub's free template below to send closing instructions to your bank and to request a check for your remaining balance, if any. I do not plan to use the account, therefore, I would like the credit line to be closed out. 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. This letter is to inform you I am closing my accounts at your bank.