The Montana Individual Income Tax Return is due for individuals filing on extension.
Learn more about Individual Income Tax filing options in Montana.
Individual Income Tax Returns Filing on Extension Due
Individual Income Tax
3rd Quarter 2019 Individual, Pass-through, and Estate and Trusts Estimated Payments Due
Event Information
Third quarter 2019 estimated payments are due for:
Payment Options
Individual Income Tax
Composite Income Tax and Estate and Trust Income Tax
2nd Quarter 2019 Individual and Pass-through Estimated Payments Due
Second Quarter 2019 estimated payments are due for:
Payment Options
Individual Income Tax
Composite Income Tax (Pass-through Entities)
- TransAction Portal
- ACH Credit Payment
- The appropriate payment voucher:
1st Quarter 2019 Individual and Pass-through Estimated Payments Due
First Quarter 2019 estimated payments are due for:
Payment Options
Individual Income Tax
Composite Income Tax (Pass-through Entities)
- TransAction Portal
- ACH Credit Payment
- The appropriate payment voucher:
2018 Individual Income Tax Due
Event Information
2018 Individual Income Tax Returns are due.
See Individual Filing Options to find the best way to file for you.
Reporting Write-Ins on Form 2
Write-ins refer to additional adjustments to income that are not reported on the federal Form 1040, Schedule 1, but which must be taken into account to determine federal adjusted gross income.
On federal Form 1040, Schedule 1, the write-ins must be included on line 36.
On the Montana Form 2, you must also include the write-ins adjustments on line 36 of the federal Form 1040, Schedule 1, on page 2. However, you do not have to mark this line with any code if you already marked your federal Form 1040, Schedule 1.
If you are adjusting your gross income by including several write-ins adjustments, or you are married and filing jointly for federal tax purposes and separately for Montana tax purposes, you may include a statement with your return identifying the write-ins or their allocation.
