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IRS P4588 basic tax guide for green card holders
What if I have been absent from the U.S. for a long period
of time?
Your tax responsibilities as a green card holder do not
change if you are absent from the U.S. for any period
of time. Your income tax filing requirement and possible
obligation to pay U.S. taxes continue until you either
surrender your green card or there has been a final admin-
istrative or judicial determination that your green card has
been revoked or abandoned. Therefore, even if the
U.S.
Citizenship and Immigration Service
(USCIS) no longer
recognizes the validity of your green card because you
have been absent from the United States for a certain
period of time or the green card is more than ten years
old, you must continue to file tax returns until there has
been a final determination that is not subject to appeal
that your green card has been revoked or abandoned.