When someone offers to help you make a down payment on a house, your lender will require a gift letter for a mortgage. Here's what it includes.Today's Date: Medi-Cal Access Program. A gift letter must contain the donor's name, the gift's value, confirmation that the gift is not to be repaid, and the donor's signature. 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 an important, formal, legal piece of documentation that can help explain that a (usually rather large) sum of money was gifted to you. You may need to complete Part IV of Form 3520, Annual Return to Report Transactions with Foreign Trusts and Receipt of Certain Foreign Gifts. A gift affidavit lets a donor attest that an item is a gift and not something the donor will expect compensation from in the future. While it's possible that no one claims on it, it's best to prepare for any legal issues in the future. Details of the donor and donee (name, date of birth, residence, relationship to each other, father's name, etc.) The amount of money being gifted,.