The 2017-2018 FAFSA is now available at, www.fafsa.gov. You will use your 2015 tax info for the 2017-2018 FAFSA.
Unfortunately we do not subscribe to the IDOC service offered by the College Board. If you have already established an account by applying to the University you will find a list of our required aid application materials in your UChicago account. Our preferred method of receiving your documents is via upload; you may do so on your UChicago account at https://prospects.uchicago.edu/account/