I have a similar situation where my spouse and I lived in different states for the most part of 2019. She couldn't take the weather in Arizona where I lived and worked, so she moved with the kids to California and stayed for pretty much the whole year and I would visit for three days or so every other week. She had no income at all, and I eventually became a remote worker and move to CA in mid-December of 2019. We rented in both places. So presumably I was a part year resident of CA (spent about 75 days there in total), but all of my income and vast majority of residence for the year was in AZ and that is where I paid taxes. Now CA sends me letters indicating I am delinquent on taxes due to them as a resident for the entirety of 2019. This doesn't seem right, but would I lose this argument based on my family having lived in CA for the whole year? We are not high enough income to where getting a lawyer for this would be cost effective.
