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 is a document stating that any money received from family or friends is a cash gift and not a loan.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. A short letter like this sample gift letter will cover all of the requirements your lender needs. A gift letter from the donor verifies that the money is a gift that does not need to be repaid versus a loan which would need to be repaid. 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. What is included in a gift letter? If you already filled out the Formstack, don't fill out the Formstack again. Estate tax based on value of assets; Forms and publications.