I am a legal resident of MI but was transferred to PA March of 2011. Because I cannot and do not want to sell my MI residence I rent an apartment in PA. I return home to MI for 9-10 days each 5-6 weeks. My employer took MI income tax for Jan-March and PA for March through January.
This year I filed a non-resident return. However next year I will perform no duties in MI at all. My employer shows my PA residence on my W2 for my address. Since I will still pay my property taxes in MI, vote in MI, and hold a MI drivers license how should I file state taxes next year?