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. A gift letter is a note from a donor to your lender regarding cash funds for your mortgage down payment.A gift letter is a piece of legal, written correspondence explicitly stating that money received isn't expected to be repaid. Most lenders have a template for mortgage gift letters that you can download, fill out, sign and submit back to the lender. A gift letter for a mortgage shows your lender that you don't need to repay gift money toward your down payment. You can call them up with the bank account details (account number, bank sort code, account name and any additional reference needed) and they can transfer it. Here's a sample gift letter you can use to prove that the money is truly meant as an outright gift, with no expectation of repayment. Transfer property or money to someone with our revocable or irrevocable Gift Deed template. It's tailored to your state's laws. You don't say which country you are in but in the UK you wouldn't be writing a letter to the bank manager.