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. The purpose of this letter is to document that the money does not need to be repaid as well as the donor's name, contract information, and relationship to you.To use gift funds, you must provide a gift letter proving the money is not a loan. Gift funds may not be contributed from any source that has an interest in the sale of the property (seller, builder, real estate agent, etc.). Mortgage Gift letter is what the donor of the gift writes to the lender stating that he has offered a gift of money to the home buyer. How do you get a gift letter? The lender will need a "gift letter" from the donor to make sure your down payment help has no strings attached. In the era of high median home prices and rent, a gift fund is great for young people to save on a down payment. Most lenders will accept gift money so long as you detail your relationship with the giver, usually in a letter, verify that the money is indeed a gift.