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.Mortgage Gift Letter Regulations By Property Type​​ There are no limits on the amount of gift money you can use for a down payment. There are no limits on the amount of money someone can give you for a down payment or to cover closing costs. Application for Maryland Gift Certification – This form identifies the family relationships that are included in Maryland's gift laws. Yes, your gift letter needs to be notarized. Also, both the donor needs to sign it to make it valid. The letter should include the exact dollar amount of the gift and the date of transfer. A gift letter from the donor to the recipient, detailing the amount gifted and its intended purpose. How to fill out the Maryland Gift Certification Application Form?