After you file

In your 2015 return PDF you'd likely be looking for Montana forms such as Form 2 (Individual Income Tax Return), Form MT 2 (Individual Income Tax Return), and/or  Form W (Standard Deductions, Itemized Deduction). 

https://ttlc.intuit.com/questions/1908857-state-forms-availability-table-for-turbotax-individual-per...