The letter must explain who is gifting the money, where the donor's funds are coming from and the relationship between the donor and the recipient. Often your mortgage originator will provide a gift letter template.The purpose of this letter is to document that the money does not need to be repaid as well as the donor's name, contract information, and relationship to you. A mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources. A gift letter is an important, formal, legal piece of documentation that can help explain that a (usually rather large) sum of money was gifted to you. Yes, all lenders will require a gift letter. Although you may have the funds, the lender needs to confirm that you won't have to repay the gift. Draw your signature, type it, upload its image, or use your mobile device as a signature pad. 03. Share your form with others. A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your down payment.