Thanks Himalayandude, This is my situation. I have been in america for more then 5 years however i have been in H1-B status for less then 183 days. Previously I beleived i filed 1040EZ(for many diff. reasons). On some websites I even found that there is something called duel filling in which people file both 1040 and 1040NR. I have no idea what that is? Also, Regarding state tax, My employer is in texas and my address is also shown as texas aswell(there is no state tax, and no state tax was deducted) . However I was a contractor worker So i worked on different states. Now how do i go about the filling the state tax. Do I have to file state tax for each state i have worked at?