Thank you for taking the time to reply! I initially filled everything out in the correct order (Federal Tax Return, then Wisconsin, then Michigan) and made it as far as I could without actually filing (I even paid for TurboTax Deluxe, which I deeply regret doing now) but the number for Wisconsin did not change. TurboTax continued to believe that I owe almost $2,000 to the state. I can no longer scrap everything and start over because TurboTax doesn't allow you to start from scratch after paying but I've tried "redoing" it from the beginning numerous times and still nothing changes.
The allocation page that you mentioned is the page that might be malfunctioning somehow. The page asks me to enter any non-wage income I made outside of Wisconsin as a nonresident. Of the $18,230 I made gambling last year, $5,781.50 of it was made in Wisconsin and $12,448.50 was made in Michigan. I entered the $12,448.50 number in the box, as that is what I made outside of Wisconsin. When I click to go to the next page, it loads up this exact same page again, asking the same exact question, with the number I already entered still in the box. I then have to click once again to go to a new page. I wonder if this is where the error is coming from but I could be wrong. I did try a different browser and the same thing occurred there as well.
I also tried entering different numbers aside from the correct $12448.50 number and the amount owed to Wisconsin never changes UNLESS I enter the entire amount. If I say that the entire $18,230 was made in Michigan and NOTHING was made in Wisconsin, TurboTax suddenly thinks I'm owed a refund of $401 from Wisconsin, which is the amount the casino withheld to cover Wisconsin state taxes back when I won it. Obviously I shouldn't be getting that full amount back but I should be getting a little bit of it back ($183, according to HR Block).
I definitely think you're right in that TurboTax wrongly assumes that all my yearly income is WI-taxable and that's why they mistakenly believe I owe almost $2,000 to Wisconsin. I just can't seem to get the program to stop believing that. Nothing I'm entering has an effect unless I blatantly lie and say I made nothing at all in Wisconsin.
Last year, I had a very similar income situation (casino winnings in both Michigan and Wisconsin, but only ever a resident/worker in Michigan) and I did not have any problems at all using TurboTax for my tax returns. Everything went smoothly. This year, TurboTax simply will not give me an accurate number for Wisconsin state. Very strange and frustrating, especially since they refuse to refund me for inaccurate forms I cannot use.
