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. 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. A mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources. If borrowers plan to use gift money, they must request a gift letter from their lenders. "A gift letter describes who the person is, their relationship with the borrower, and how they will give the gift check, cash, or transfer. A gift letter is an important, formal, legal piece of documentation that can help explain that a (usually rather large) sum of money was gifted to you. In the letter, the donors must specify that the money is a gift. While it's possible that no one claims on it, it's best to prepare for any legal issues in the future. Keep in mind, the amount of the transfer must match what's stated in the gift letter.