Should I file Wisconsin state taxes if I live in Washington state, but received a 1099-Misc for non-employee income from a Wisconsin-based business?

[cdoberstein]

I do side work for a Wisconsin-based business from my home in Washington state.

[KatrinaB]

No. You file your state tax return for the state where your work was completed not the state where the company was based. Therefore, you should file a Washington state return only.