Hello, Wisconsin and Illinois have a tax reciprocity, but TurboTax is NOT calculating it and it saying nominal refund in Illinois and massive tax due in Wisconsin

[tgmcnamara]

This is wrong and TurboTax should accurately reflect the reciprocity

[Mike9241]

what type of income is neing taxed by Wisconsin. 

only wages fall under the reciprocity agreements. Other income sourced to Wisconsin is taxed by both states but you get a credit on the Illinois return.  Does box 15  of the W-2 show WI rather than IL. if so it seems your employer withheld for Wisconsin and not Illinois. thus you would have to file a WI return to get your taxes back and then owe IL

it's best to do the nonresident state first