Hi, I'm new to this but need advice. My parents have given me and my brother a substantial cash gift.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. Download a gift affidavit form in PDF or Word format to attest to and record the gratuitous and voluntary transfer of a gift. What should the gift letter include? 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. Save the Children is a leading humanitarian organization for children. For example, an original letter is "best evidence," and a photocopy is "secondary evidence. We believe a child's education is the foundation to reaching their fullest potential.