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. How much money do you need to receive before a gift letter is necessary?Affidavit of Motor Vehicle Gift Transfer. There is also a daily withdrawal limit at ATMs. If you need a higher limit temporarily, please call us to have that approved before making your purchase. A gift letter is a piece of legal, written correspondence explicitly stating that money received isn't expected to be repaid. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment. Authorization Letter - Form MV-454. The petition should be submitted to the Harris Dean of Students at least 30 days before they reach the time to degree limit. The law limits the sources and amounts of funds used to finance federal elections.