<p>I am not sure why the application is opened Oct 1? Don't you need to file your income tax return first and use those numbers for filing?</p>
<p>Take a look at it again. It may be set up to receive estimated financial information from applicants who are applying Early Decision. Students who are accepted ED will have to file up-dated final versions of the CSS Profile in the spring before receiving their definitive financial aid packages.</p>
<p>If not applying early, it is best to wait until your taxes have been complete, as the data on the Profile cannot be edited, so it’s a bit of a nuisance to send in updated info.</p>
<p>If applying early, you will have to meet the school’s deadline, which I think is around Nov 1 ?</p>