Creditor Name. Address. In this article, we walk you through all the steps to writing and formatting the letter, including a sample and a template.How to use the template: 1. In the sample letter, fill in your personal information. Your bank may have an account closing letter template or form that you can download from its website or pick up at a branch. 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. Here is a format letter for closing the bank account. Make sure you understand the entire format before writing a letter for closing a bank account. This letter is to inform you I am closing my accounts at your bank. We can provide you with samples of court forms that are available.