Perhaps, if your son earned money while working in Wisconsin, he may have to file a Wisconsin state tax return. If he never worked in DC or had other DC income he would not have to file a DC return. He would have to file a Massachusetts return. In general, you must file a tax return in the residence state, so if he relocated to Wisconsin permanently, he you use Part-Time resident status on WI and MA.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
