You are a New York State resident if your domicile is New York State OR: you maintain a permanent place of abode in New York State for substantially all of the taxable year; and. you spend 184 days or more in New York State during the taxable year.
https://www.tax.ny.gov/pit/file/nonresident-faqs.htm#:~:text=You%20are%20a%20New%20York%20State%20re....
Thus for this year you must file as a full-year resident of New York.
Since you became a domiciliary resident of DC this year, for this year you are also a part-year resident of DC, which obligates you to also file a part-year resident DC tax return. DC allows a credit for taxes paid to other states on income also taxed by DC. Thus you may claim a credit on your DC return for the taxes paid to NY on the portion of your NY income that you earned after you became a domiciliary resident of DC.
https://otr.cfo.dc.gov/page/audit-division-frequently-asked-questions#:~:text=Does%20the%20District%....
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
