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 short letter like this sample gift letter will cover all of the requirements your lender needs.We'll also show you how to write a gift letter with a gift letter template so you can help your donor prepare for underwriting. Here's a sample gift letter you can use to prove that the money is truly meant as an outright gift, with no expectation of repayment. On the rules for mortgage gift letter, let's dive in. First, the mortgage gift letter must include the name. 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 gift letter for a mortgage is a written statement confirming that the gift money you receive from a family member or friend is a gift, not a loan. A gift letter for a mortgage is a written statement confirming that the gift money you receive from a family member or friend is a gift, not a loan.