There is a reciprocal agreement between Illinois and Wisconsin. A reciprocal agreement, also called reciprocity, is an agreement between two states that allow residents of one state to request exemption from tax withholding in the other (reciprocal) state. This can save you the trouble of having to file multiple state returns, in your case, IL and WI tax returns.
You should have claimed a refund on your WI nonresident return and paid tax to your resident state.
Amend your state returns if you need to.
Fill out Form W-220 and give it to your employer to avoid this.
@yams1999
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
