I am a Michigan resident about to take a 9 month long job in Wisconsin. I plan on moving back to Michigan afterwards, and my spouse will live and work in Michigan during my out-of-state job.
I know that Michigan and Wisconsin have a reciprocal tax agreement. So, if I submit a W-220 to my employer to be exempt from Wisconsin state taxes, will my Michigan state taxes automatically be withheld? Or do I need to submit an MI W4 to my employer as well, to ensure that my Michigan state taxes are withheld?