OK. So does she have to first file CALIFORNIA return, and then send a copy of it to MICHIGAN, to show her CALIFORNIA Income? (That way, MICHIGAN can verify how much she earned in CA vs. total AGI?)
When I did rough calculations using EXCEL per your suggestion, vs. entering all data in TURBOTAX, I am getting different "MICHIGAN" tax she owes. My calculations show that she owes $2,466 (after taking credit in 18B and MI tax already paid thru' W-2) but Turbotax shows $2,550.
TURBOTAX will not give me a "preview" of her MICHIGAN income tax return until we PAY....so no way to know what TURBOTAX's MICHIGAN 1040 form looks like. (Where the line 18A and 18B would have figures.)
Any other suggestions?
