FAFSA for All Act This bill amends title IV (Student Assistance) of the Higher Education Act of 1965 to direct the Department of Education to include on the same website that is used to provide students with the electronic version of the Free Application for Federal Student Aid (FAFSA) questions to determine, for title IV eligibility purposes, whether: a dependent student is a citizen, national, or permanent resident of the United States or is here for other than a temporary purpose with the intention of becoming a citizen or permanent resident; and the parents of a dependent student have a valid social security number. The website must also include: detailed guidance on how dependent students who satisfy those immigration requirements but whose parents do not have a valid social security number may obtain student assistance under title IV, and an online tool that allows those students to upload the documents they need to receive such assistance.