<p>The CSS Profile would ask me to enter information on my fathers tax return (just a random example: blah blah, enter 2013 IRS Form 1040, lines 28 and 32) and there would be nothing in the lines asked for. Should I just leave it blank on the profile or enter a 0?</p>
<p>Zero</p>
<p>thanks @suzy100</p>
<p>Make sure it is the right form. When it said 1040, it is not 1040A or any other 1040 derivatives.</p>