Hi, I am on a J1 Visa and I arrived in the US in September 2007. For 2007 taxes I did not use the treaty between italy and US in order not to pay taxes because I was not aware of it. Then for 2008 I used the treaty. The treaty is valid for 2 years. MY question is about the two years. They are fiscal year, solar year or simply days of permamence in the US. If the last is valid I could use the treaty also for 8 months during 2009 and then be a normal resident for the rest of 2009 and fill tax forms as a dual status. Could you help me with this? Thanks