Multiple States tax filing question - should I file AZ as a resident or just not file AZ taxes?
Background: In 2019, I was a full time student in PA (spending 9 months in the dorm) and earned 6% of my income (w-2 rcvd with fed&state w/h). I also interned in CA (2 months rented house) and earned 90% of my income (W-2 rcvd with fed&state w/h) . In addition, I have unearned income (1099) which is 4% of the total income. My parents live in AZ and I use that as my address spent less than a month there in 2019. I have an AZ drivers license and regd to vote there. My bank a/c is in PA and AZ. I am filing taxes for the first time!
Questions: Which state am I a domicile of ? specifically, can I be a part year resident of 3 states OR is it mandatory to be a resident of one state, and part time for the other two?
Why do I ask? -
a. TurboTax online is forcing me to be a resident of one state and is basing that on where I was on Dec 31, 2019 (I was with my parents for the holidays!
b. I spent most of my time in PA, made most money in CA, have drv lic and regd to Vote in AZ.
c . If I use AZ as a full time resident, I have to pay $185 in taxes to AZ in addition to paying (about) the same to the other two states.