Please address all correspondence and any drawings hereunder to the attention of the Standby. Completing this form in MS Word automatically fills in the Irrevocable Letter of Credit Format for you!1. In the sample letter, fill in your personal information. Below is a sample letter to help you craft your own letter. Send the letter via certified mail and keep the return receipt for your records. This form must be completed and provided with each new Letter of Credit posted with Land Development. A letter of explanation can clarify your financial situation and get you one step closer to qualifying for a mortgage. In lieu of the Excise Tax bonding requirements this template may be used to request a Letter of Credit from your financial institution. A letter of credit for rent lets you address and explain the red flags that will pop up in your credit history. A letter of explanation is a written, signed and dated document you prepare to address questions a mortgage lender may have about your loan application.