My father lives in and is a resident of Colombia, South America. The last time he lived permanently in the states was in 2011 in Illinois, but he has filed state returns due to having a rental home and other financial assets in the US (both of which are no longer applicable). He is no longer earning foreign income that needs to be reported, just a pension from the state of Illinois. My mother is a citizen of and has lived in Colombia since 2011 and now receives a monthly social security check. They have a couple of US bank accounts (less than $10,000 at any given time) and credit cards. Do they need to file a state tax return?
