<p>When it asks for my parents' gross income, should I estimate it, then update it as soon as possible when they get their tax return? Some of the schools I've applied to have deadlines in February 1st. How much of a difference would it make if my estimations are about 2k off?</p>
<p>Use the 2011 income that’s what I did. When I estimated it, it said something like there was a significant increase. Just use your last years for the mean time and update it later after your parents file for this year</p>
<p>If your parents have their past pay stub for 2012 (sometimes they can access this information on line), I would recommend using that.</p>