A gift letter for a mortgage is a document that confirms that a financial gift has been given to a borrower to help them with the down payment or closing costs. You can use gifted funds to make a down payment, but your mortgage lender will want to know some details before they allow you to use it.A short letter like this sample gift letter will cover all of the requirements your lender needs. In this article, we'll cover how to write a donation letter. Use one of our six sample donation request letter templates to get started. This receipt is issued to individuals who have donated cash or payment, personal property, or a vehicle and seek to claim the donation as a tax deduction. Omella provides payment processing with no additional fees. Use this online template to add donations through your website. When someone offers to help you make a down payment on a house, your lender will require a gift letter for a mortgage. Here's what it includes.