I gave 1/2 of down payment to my nephew who bought a house. He is sole owner of the house, and have his name only on theim mortgage. Two years after, he lost his jobs. So I have given him money to pay property tax, and monthly mortgage. He added my name on the title of his house. Could I claim those payments for deduction from federal and state income tax? If his house is out of my resident state, do I still qualify for deduction in both federal and state? If yes for federal, and no on my state, how do I remove the portion of out state property tax and mortgage interest from federal? Thank you
