@jennifervphan --
If you are working remotely for your own convenience and are not required to do so by your NY employer, then your 2021 work income is taxable by NY, both before and after your move..
Since you moved this year, for tax year 2021 you will file a part-year resident NY return in addition to your federal return. You will allocate ALL your NY income to the state of NY.
There is nothing to file for WA since WA has no income tax. There is also no "tax credit" to be had from the state of WA.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
