Your gift letter has to be backed up with paperwork. A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your down payment.Can I bring a gift or food for an inmate? A down payment can be hard to come by. One option is to be gifted the money, but this has certain requirements, such as a gift letter. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment. I further certify that there is no repayment expected or implied on this gift in the form of cash or future services from: OR. A gift letter is a piece of legal, written correspondence explicitly stating that money received isn't expected to be repaid. Do not use the signing option when filling out the forms. These forms may be filled out online and printed for filing.