I read all the comments and I would suggest the same as Kanchu did. Seems like your status is F1 so you have to file 1040NR. And when you file that most of the time you owe federal taxes. But it doesnot mean that you owe all the time, it all depends on your W-2 info i.e how much they have already withheld so and so....If you go to IRS website and just read the instruction for 1040NR you will get feel for it how it is calculated. Hope that helps.