<p>For FAFSA you are required to report the parent you lived with the most and their spouse whether they do taxes separately or together. If there are schools that do not require the step parent info for their own institutional aid you would still have to report it on FAFSA and any federal aid (Pell grants, ACG, SEOG, SMART grant, Perkins and Stafford loans etc) and probably any State aid that is based on the FAFSA EFC would be based on the parent/stepparent income.</p>