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. 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.A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your down payment. Use our mortgage gift letter 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. 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. Enter your zip code to see attorneys available in your area. The last item is the most important element of the gift letter.