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. A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your 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. 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. Pin down the specifics of the property in question. Clearly state the property's address, ensuring there's no ambiguity about where the gift funds are intended. Enter your zip code to see attorneys available in your area. Fill out your loan application.