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 mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources.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. Your parents will need to file the proper forms with IRS declaring the gift. So no potential consequences of gift tax. A gift letter must contain the donor's name, the gift's value, confirmation that the gift is not to be repaid, and the donor's signature. A financial gift toward your down payment can get you into a home faster. Learn how to give and receive gift funds the right way. 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.