W-4 other state tax withholding

[KTDST]

Hello guys,

I have a client that started a new job in 2021. The client was always OR resident (full time). The company he works for is based in CO, he flew there once to meet the team. So I have CO in Box 15 and State income tax withheld in Box 17. Do I really have to file a nonresident CO return to get that withholding back?

[abctax55 · Accepted solution]

Yes.

They won't send a refund if a return is not filed.

[KTDST]

Thanks, that was my thought.