Tax for F-1 visa on OPT with tax treaty, resident alien for tax purpose
HI--I have multiple "identities" with regard to tax:
1. I'm an F-1 visa holder
2. I'm on OPT from Sept.2007-Aug.2008
3. I have benefits of tax treaty, under which I can be exempted from federal taxes up to $5000 a year for wages, and unlimited amount for fellowship
4. I'm a resident alien for tax purpose due to the fact I've been in the US for more than 5 years
In year 2007, I received fellowship as well as wages from three different institutions in 3 different states. My wages did exceed $5000. So, how much, how and when should I pay for my federal taxes?
Many thanks!