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. A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your down payment.A short letter like this sample gift letter will cover all of the requirements your lender needs. 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" if you're using gifted money for a downpayment; Credit explanation letter if there are derogatory marks on your credit file. Here's a sample gift letter you can use to prove that the money is truly meant as an outright gift, with no expectation of repayment. The scammer also might stay on the phone with you while you go to the store and load money onto the card. If this happens to you, hang up. Female Developers Navigate Discrimination in a Male-Dominated Field. Fill out your loan application.