I encountered the same issue. After many attempts to insert different values into IL-1040 and the ICR Schedule, I did determine that they are working correctly....
I would like to report that the Illinois State Schedule ICR form in TurboTax is working correctly. I spent a bunch of time filing in the IL-1040 and Schedule IC...
No. Line 3 is not a negative number (324). Line 3 is sum of Line 1, the value found on IL-1040 Line 14 which is the value of the tax due based on the Net Income...
