With a green card status, if I am based away from the United States do I have to file taxes in the U.S. on the income I earn away from US?
Anytime you are a resident of the United States, full time or part time, you will need to file taxes in the United States for all the income earned in the United States or another country. Filing taxes requires the basic form 1040-C and other basic forms in order to file. When you have your green card, you are considered a resident. You will also need to report your income to the country that you are staying in part-time. You will need to show proof that you are paying taxes to one or both of the countries in order to get a break at tax time. You shouldn’t have to pay taxes twice as long as you can show proof.