A gift letter is an important, formal, legal piece of documentation that can help explain that a (usually rather large) sum of money was gifted to you. Hi, I'm new to this but need advice.My parents have given me and my brother a substantial cash gift. 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. A gift letter is a written explanation provided to your mortgage lender when someone else gives you money toward a home purchase. Transfer property or money to someone with our revocable or irrevocable Gift Deed template. It's tailored to your state's laws. 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. Download a gift affidavit form in PDF or Word format to attest to and record the gratuitous and voluntary transfer of a gift. A will specifies how your estate your property, money, and other assets will be distributed and managed when you die.