I do not plan to use the account, therefore, I would like the credit line to be closed out. Edit, sign, and share Credit Letter to Close Account online.No need to install software, just go to DocHub, and sign up instantly and for free. 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. Want to close a bank account? You might need to submit a written request. Below is a list of forms that you may download for free from our website. A letter of explanation can clarify your financial situation and get you one step closer to qualifying for a mortgage.