If I have a roommate in my home (50%) and they pay rent, when I am reporting mortgage interest on my home, must I calculate 50% of interest? Or does turbotax auto?

[eric-m-einstein]

If I have a roommate in my home (50%) and they pay rent, when I am reporting mortgage interest on my home, must I calculate 50% of interest? Or does turbotax auto?

Since I already noted the 50% shared use, is the software now calculating or expecting me to do that first for the mortgage interest?

[tygrtchr]

If the mortgage is in your name, then you should claim all of the interest.  Whatever your roommate pays you in rent should be counted as your income.