I am a US Citizen working in Manufacturing Company in Mexico Border region. I have been working here for over 10 years now. My payroll comes from US and have all normal US and State taxes deducted until last year have to be on Tax Equalization/ Hypo Tax . My employer hired company appointed tax advisers, this would be first time. My questions my situation is different because technically I'm not a expat. I live in the U.S.A . side of border and commute to work across to Mexico daily and head back Home stateside every afternoon. Somewhat common in Maquiladora / Manufacturing sites in Mexican Border cities. I have Mexican Worker visa INM permission . The tax advisers online questioner keep on asking how long I lived In Mexico, Who is currently residing at the house in the United States? What is/was your host country living arrangement? These question are not for cross border commuter. I have asked tax advisers that I don't live in Mexico and are only at work 5 days a week minus U.S. holidays plus my vacation days. Tax advisers say that doesn't matter that for Mexico I reside in Mexico full time. I was hoping for some guidance if anyone has been in this same situation