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.A short letter like this sample gift letter will cover all of the requirements your lender needs. A gift letter for a mortgage is proof to the lender that money you've been given for your home purchase is a gift, not a loan to be repaid. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment. A gift letter is a written statement confirming that the funds given to a borrower are indeed a gift and not expected to be repaid. We are pleased to provide you with the Annual Comprehensive Financial Report (ACFR) of the Pima County.