gyn1
Montana does what a number of states do - calculate your state tax based on federal income, then prorate that tax by the ration of the Montana divided by the federal income. You can see this happening on lines 18-20 on Form 2 Schedule II.
When you refer to "the Montana Tax Return Summary", may I assume that this is not on a tax form? The important numbers are on the tax forms.
If you find numbers on the actual tax forms that are incorrect, please let us know.
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