回复：回复：回复：请问pjiang关于绿卡报税用treaty

你给的第一个link里面只是说如果Declare yourself a “nonimmigrant” on your tax returns就会失去绿卡。但是我虽然是绿卡，并且想用treaty报税，我并不会说自己是nonimmigrant啊。而且我印象中1040表里面也没有什么地方填自己的immigrant status啊。

-If you file 1040NR, your GC may be cancelled. If you file 1040 (this form is for residents such as H1 hdoler, GC holder, US citizen, etc.), you will be fine. 

另外，第二个问题如果回答是Yes，不就说明绿卡也能用treaty么？这不正好说明pjiang的说法不对吗？

-What I said is that if you were not green card holder in several months in one year, then became a GC holder in the same year, you can use the treaty benefit for the time (several months) when you were non-GC holder (if qualified), but you can not use the treaty benefit from the date you became the GC holder (the later months of 2010). Please note that you file the tax return is for 2010 when you were not GC for the 前半年 of 2010 even if you are GC holder now when you file 1040.

你给的第二个link是关于dual status的。我的情况不是这样。我2010年全年都是resident alien。虽然前半年是J1，但是J1从第三个calendar year就算是税务上的resident alien了，

后来年变成绿卡就更是resident alien了。但是根据前人的经验和我自己的理解，resident alien照样可以用treaty的。

-You need to check the US-China Treaty to see whether you were still qaulified for the benefit for the 2010 前半年J1. If yes, you can use it even if you file 1040 (not 1040NR).