State tax filing

Michigan and Indiana have reciprocal agreements.

Based on the limited facts, you would be deemed a Michigan resident.  As such, wages earned in Indiana by a Michigan resident would be exempt from Indiana state tax.

So to answer your question, you would be taxed only in Michigan on those wages / bonus.

 

*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.