Hi, I came to US on Sep 2010 and from 2011 to 2013 I didnt file tax because I was not aware of filing tax even though I was not working. So now I am trying to file for Citizenship and there is a check box in n400 form that "did you ever failed to file tax in any year when you became GC" if yes get all the corresponding document. Now my question is what kind of document I need from IRS?
You need to talk to an immigation attorney so they can explain the form to you. You need to establish if you were required to file taxes first. If you were not legally required taxes then you can not have failed to file because you didn't have to... don't tinker with immigration applications, it might cost you more than you like if you do it wrong.
An experienced immigration attorney will be able to help you file and walk you through everything you need to do (the internet is not a replacement for years of education and experience!)
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You will have to include evidence that you were not required to file under the law. I would talk to an experienced immigration attorney to review your tax transcripts and help you determine what sort of document is best to establish that you were compliant with iRS regulations.
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If you were not working 2011 through 2013 you may not have been required to file taxes for those years. A good immigration lawyer would help you complete that form and represent your interest better than yourself.
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