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 mortgage gift letter is a document that helps satisfy the requirement that a borrower's down payment funds come from legitimate sources. 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. A mortgage gift letter is a simple but essential document that assures lenders the funds you received are a gift, with no repayment expected. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment. Download a gift letter for a mortgage. The letter needs to indicate that the money is a gift and not actually a loan you must pay back. A gift letter is a way for lenders to verify that the person giving you money for a mortgage isn't involved in the home purchase.