Resident or Nonresident for tax purposes
I came to US for an internship (J1 visa) on July, 2006 and stayed for 6 months (departed on Jan 2007). My internship was funded by my home country government so I did not pay any taxes to US government. However, I got a social security number during my internship.
On Sept. 2007, I came to US as a graduate student on F1 visa and I have graduated on Sept. 2011 and right now working on OPT. My question is: Am I considered to be a resident or non-resident for tax purposes for the year 2011 (the one that I need to file before April 17th)? Which date is considered to be my original date of entry, July 2006 or Sept.2007?
Thanks!!