This is a super helpful thread, thanks, DanielV01. I have one more layer to ask about.
I was a DC resident for half of 2019 and worked in MD. Then I moved to GA for the second half of 2019. I have Box 17s for MD and GA. I zeroed out my "Wages from MD sources" in order to get back the taxes I paid to MD so I can pay them to DC, as you stated in earlier posts.
When I am filling out my DC return, do I list anything under "Summary of taxes paid to other states?" Should I list the income and taxes I received and paid as a part-year GA resident under double-taxed income and tax paid to Georgia on double-taxed income?
