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 statement that assures your lender the money that came into your account is a gift and not a loan.A gift letter for a mortgage is a written statement confirming that the gift money you receive from a family member or friend is a gift, not a loan. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment. A mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources. This guide explains how to document gift funds for a mortgage and meet lender requirements. The letter should state that the person giving you the money is not getting something of value in return, such as an ownership stake in the property. Or other services of any kind now or in the future. A gift letter is a letter stating that money you receive from a friend or family member is in fact a gift, not a loan. A gift letter is a written explanation provided to your mortgage lender when someone else gives you money toward a home purchase.