The Montana Department of Revenue will accept 2017 Individual Income Tax Returns starting January 29, 2018.
Welcome to the Montana Department of Revenue
Filing Begins Jan 29
Annual Withholding Reconciliations are due on January 31, 2018 including any 1099s or W-2s.
To save you time and Montana money, we now accept personal and business property reporting only through our TransAction Portal.
If you need help working with the department or figuring out our audit, appeals, or relief processes, the Taxpayer Advocate can help.