Introduction
There are several reasons you may need to file your tax return after the normal due date.
Your unique tax situation will determine what that means for you. A qualified tax professional can help you find the information that best fits your situation.
Instructions
The information provided here is not comprehensive and may not be accurate for your situation.
A qualified tax professional can help you determine your specific needs.
Extensions
Automatic Six-Month Extension
You receive an automatic six-month extension to file your individual income tax return.
You do not need to submit a form for the extension.
Extensions are for filing only.
You must still pay your tax liability by the due date to avoid penalties and interest.
You may make an extension payment:
- Through our TransAction Portal (TAP) or
- Using the Montana Individual Income Tax Payment Voucher (Form IT)
Please Note
You must file your return before the extension due date. If you don't file and pay before the extended due date, you'll be charged penalties and interest.
Military Active Duty Extension
If you or your spouse is:
- On active duty in the regular armed forces, and
- Serving in a combat zone or contingency operation
You can extend your due date up to 180 days from your last day in a combat zone.
When you file your return, write "Combat zone or contingency operations extension" in red ink at the top of your Montana Individual Income Tax Return Long Form (Form 2).
If you file within 180 days of your last day in a combat zone, you won't be charged any penalties or interest.
Penalties and Interest
Individual Income Tax is subject to uniform penalties and interest.