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. Gift Letter For Mortgage Template.Your lender might give you a template to follow if you tell them you're using a gift for your down payment. 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. Mortgage gift letters tell the lender that money for your loan came from a gift. Lenders require gift letters when necessary. A mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources. A short letter like this sample gift letter will cover all of the requirements your lender needs. Download a gift letter for a mortgage. A mortgage gift letter states that you received money as a genuine gift to use toward a down payment, rather than a loan.