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. 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.A short letter like this sample gift letter will cover all of the requirements your lender needs. We'll also show you how to write a gift letter with a gift letter template so you can help your donor prepare for underwriting. Mortgage gift letters tell the lender that money for your loan came from a gift. Lenders require gift letters when necessary. Be sure to know what a good credit score looks like, as well as how to prepare a gift letter. See What is backup withholding? (installment) in order to qualify for the Mortgage, payoff must be documented in the Mortgage file. Mostly from wages, filling out the forms is easy.