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. Gift Letter For Mortgage Template.Your lender might give you a template to follow if you tell them you're using a gift for your down payment. If part of your mortgage deposit is a gift, the lender may ask for a mortgage gift letter confirming the funds are not a loan. Downloadable template. Many standard forms are available below. All forms are categorized into their respective departments.