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. Your parents will need to file the proper forms with IRS declaring the gift.So no potential consequences of gift tax. A short letter like this sample gift letter will cover all of the requirements your lender needs. A mortgage gift letter is a statement that assures your lender the money that came into your account is a gift and not a loan. 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. We have the answers. Look here for responses to frequently asked questions about banking and BOB.