Hello Tax community, 

Any Michigan tax preparers out there that might be familiar with local code, MI - C? Box 20. 

I've been looking at the Michigan website and can't seem to find it. 

My client's W-2 last year did not have the local boxes filled, but this year, Box 18 has his wages, Box 19 is zero, and Box 20 has this mystery code. 

Thank you all, 

Dawn