Part year resident for both. How to file part year returns.
My wife worked and lived in Kansas for 15 days and then moved to New York, lived and worked in NY for rest of the year. I worked in new York for the entire year. We are trying to file jointly, how do we file residency status? Do we do part time for both?
You were probably in the process of getting things switched and moved. Technically, you were probably a KS resident for part of the year. You can file MFJ as part year for each and only claim the income that is correct for that state and time period.
You might be able to make a case for KS nonresident if you had basically moved and established a new home in NY and were just in KS to finish things up. Having a home in NY, license, things that look like you plan to be a NY resident on Jan 1 could make you a KS nonresident.
Reference:
NY instructions