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. You can use gifted funds to make a down payment, but your mortgage lender will want to know some details before they allow you to use it.A short letter like this sample gift letter will cover all of the requirements your lender needs. A mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources. Often your mortgage originator will provide a gift letter template. Mortgage Gift letter is what the donor of the gift writes to the lender stating that he has offered a gift of money to the home buyer. Use our mortgage gift letter template and write yours. The lender will need a "gift letter" from the donor to make sure your down payment help has no strings attached. The gift giver may need to provide bank statements from where the funds originated.