I work during my OPT, but I paid federal tax, SSN tax, medicare tas. Since I overpaid tax, I have to get the overpaid part during tax return. What form should I use to file tax and how to get tax return?
Thank you.

Jenny:

What was your visa status?

If you converted from F-1 to H-1 or H-1B, when was the conversion effective?

What is your nationality?

Need this info to answer properly.