@travel9870 --
If you move on December 1st, then for 2024 you will file a part-year resident tax return for both DC and CO.
If you receive your bonus after becoming a CO resident, it will be fully taxable by CO.
On your DC tax return follow the instructions for part-year residents. You will find these instructions on page 15 of the DC tax instruction booklet. Also, see the instructions for Line 8, on page 16. Here's a link to the 2023 booklet (the 2024 booklet has not yet been published but is unlikely to change the instructions):
https://otr.cfo.dc.gov/sites/default/files/dc/sites/otr/publication/attachments/2023_D40_Book_Final_...
How to file a part-year resident return in TurboTax:
How do I file a part-year state return?
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
