I’m an US green card holder working and living in the US for at least 5 years. In the end of 2017 my wife, me and my youngest daughter became Canadian PR by being sponsored by my oldest daughter. Only my wife has been still residing in Canada living in my daughter’s house since landing. Myself and my youngest daughter went back to US to continue work and her study in university. I don’t have anything in Canada except an empty bank account. Since then I only come to Canada to visit my wife 2 times per year, each time I stay about a month or so. I’ve been always filing taxes in the US. I’m not sure this year (2018 tax) if I have to file tax in Canada too?