Married filing jointly different states
My wife and I just got married this summer and we're confused on our tax situation. We have heard that it is advantageous to file jointly, but she is a resident of WA and I am a resident of MT. She is currently in a doctor program and has no income, where I have a decent income and work in WA. Would it be best for me to become a WA resident for our tax filing, or can we still file jointly as residents of different states. I have heard that Montana has an income tax whereas Washington doesn't, but I don't know how that impacts our situation.