引用:
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作者kp2015
稍微看了一下,再google一下,這似乎是針對某特定族群.對一般外國人來說應該無影響. 
至於拿了綠卡,當美國公民,要守法,不要老想鑽漏洞逃稅,享權利也要盡義務. |
稅務是分成resident alien（居民外國人）跟 nonresident alien（非居民外國人）。
resident alien的要件是滿足green card test（持有綠卡）或substantial presence test（住太久
）。
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Resident Aliens
If you are a resident alien, the rules for filing income, estate, and gift tax returns and paying estimated tax are generally the same whether you are in the United States or abroad.
Your worldwide income is subject to U.S. income tax the same way as an U.S. citizen. You are a resident alien of the United States for tax purposes if you meet either the
green card test or the
substantial present test for the calendar year.