Follow the basic instructions on this sample letter to fill out the form, and be sure you understand the fine print. A couple signing documents for a mortgage application, which includes a gift letter.Background: A family member offered to help me buy my first home (this is in the USA). A short letter like this sample gift letter will cover all of the requirements your lender needs. A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your down payment. A gift letter is a piece of legal, written correspondence explicitly stating that money received isn't expected to be repaid. This guide explains how to document gift funds for a mortgage and meet lender requirements. Details of the donor's bank, account number, and account type; The donor's signature. As noted earlier, your bank should provide a gift letter template for you to complete. Form should have been so noted.