I wish I know this earlier, I'm in the same situation. Worked for a company in CA, but live in CO the whole time.
I filed tax 2020, 2021, 2022 to CA and paid a lot. I should have file tax in CO for less charge. Should I amend those 3 years? Do you think it worth it to amend, I never done it before an not sure how complicated to amend.
