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. It states how much you're getting and from whom.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. If borrowers plan to use gift money, they must request a gift letter from their lenders. In the letter, the donors must specify that the money is a gift. The lender is requiring me to write a gift letter stating I'm gifting my SO the down payment, with no expectation of being repaid. A short letter like this sample gift letter will cover all of the requirements your lender needs. What is included in a gift letter? The purpose of this letter is to document that the money does not need to be repaid as well as the donor's name, contract information, and relationship to you. It also proves the money is a nostrings present, not an additional debt the borrower is responsible for.