Hi, Kate. For a Conventional/Fannie Mae loan, you can typically recive up to 5% of the total sale price as a gift. However, you must have a min of 5% of your own money vested as well. For FHA and VA, there are no limits, and even your 3.5% min down payment can be gifted. With regards to the tax free portion, that's a question best answered by you and your relatives accountant(s).