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. 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.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. Mortgage gift letters tell the lender that money for your loan came from a gift. Lenders require gift letters when necessary. The person who gave you the money must write and sign the gift letter as well as provide their personal information. Simply put, it's a letter written to your lender that fully details the generous financial gift you're receiving. In the letter, the donors must specify that the money is a gift. Keep in mind, the amount of the transfer must match what's stated in the gift letter.