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 person who gave you the money must write and sign the gift letter as well as provide their personal information.If you are buying a single family home as a primary residence, you can use gift funds without contributing any of your own money to the down payment. They insist on us signing a 'gift letter' to certify that the funds from my parents are not debt financing and that we will not owe interest payments to them. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment. Learn about gift letter requirements If you go through a bank they will provide the gift letter form to you to get completed. If someone provides a handwritten letter it is filed away. It states how much you're getting and from whom.