I have a definitive response from the Developers just today.
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The IL-1040 Schedule SA will not be supported by TTX for for 2017 IL taxes.
Thus, if you really want to use it, you will have to manually do it on paper forms, and mail in your IL forms .
Thus only the default blended tax calculation will be used by the TTX software.
(Or check with other software providers)
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
