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. Once completed, note the SST number and come into our office to finish the process.How to Write a Gift Letter for a Wells Fargo Mortgage: A StepbyStep Process. 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. A gift letter from the donor verifies that the money is a gift that does not need to be repaid versus a loan which would need to be repaid. A signed statement from the donor that no repayment is expected; The borrower's signature. Gift Letter For Mortgage Template. As noted earlier, your bank should provide a gift letter template for you to complete. The letter should clearly state that the gift is not a loan and that there is no expectation of repayment.