Then for 2020 you file a part-year resident return in each of the two states.
NJ can tax all the income you earned as a resident of NJ; CA can tax all the money you made as a resident of CA.
In the personal info section of TT, answer Yes that you lived in another state and No to the question about having income from another state.
You became a CA resident on the day you began living in CA with the intent of making it your permanent home.
You do not have to file in MT because MT does not tax non-resident remote workers.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
