File a Married Filing Joint, part-year resident return for Arizona. From the Arizona DOR website AZ Tax Filing Statuses (click link), comes the following information (alternate font used for quotes, italics added where indicated):
Determining Your Filing Status
The filing status that you use on your Arizona return may be different from that used on your federal return.
If you qualify as married for federal purposes, you qualify as married for Arizona purposes and must file using the status of either married filing joint or married filing separate.
If you are single, you must file as single or if qualified you may file as head of household.
Married Filing Joint Return
You may file a joint return if you were married as of December 31, in the tax year. It does not matter whether or not you were living with your spouse. You may file a joint return, even if you and your spouse filed separate federal returns.
You may file a joint return if your spouse died during the tax year and you did not remarry in the tax year.
Arizona Form 140 is for full year residents only. You may not file a joint income tax return on Form 140 if any of the following apply (Italics added):
- Your spouse is a nonresident alien (citizen of and living in another country).
- Your spouse is a resident of another state.
- Your spouse is a part-year Arizona resident. (Italics added)
If filing a joint return with your nonresident spouse, you must file a joint return using Arizona Form 140NR.
If filing a joint return with your part-year resident spouse, you must file a joint return using Arizona Form 140PY. (Italics added)
Make sure that in the Personal Information section you have set this up correctly by indicating your personal residency in Arizona. Your spouse will be a full-year resident, but you will state that you did live in another state in 2020 (Colorado), and indicate your Arizona move-in date. Then make sure that the Arizona Part-year return is selected. The Colorado income will be subtracted out of the return.
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