@CJtoCo wrote:
Thanks very much for the information. This is all happening quickly so I'm trying to learn as fast as possible. It may not be necessary but here are a few specific dates for my transition:
12/20/2023 - Last full day of employment in NY (Submitted a resignation with this date, but will be brought down to 'part-time' by my current employer to help with the transition)
12/23/2023 - Last day of residency in NY (worked out an agreement with the current landlord to terminate current lease a little early)
12/27/2023 - First day of residency in CO (apartment move-in/lease commence)
1/3/2024 - Start date of employment in CO
In the week between arriving in CO and officially starting work I'm hoping to get my ID/car/insurance/etc. sorted out, so it looks like I will be a part time resident for 2023, even if it's only for a few days.
If you have not been paid by the CO company, and will not receive any income in CO until after 1/1/24, then it will be simpler (and make no difference to your taxes) to just file as a full year New York Resident, ignore Colorado, and consider the start date of your Colorado residence to be 1/1/24 for tax purposes. Since your move-in date is 12/27, the only reason to go through the hassle of reporting part-year NY resident and part-year CO resident is if you will receive CO income between 12/27 and 12/31/23.
