Montana Department of Revenue Tax Guidance & Form Instructions
Montana Individual Income Tax — Overview
preamble
Individual Income Tax
If you live or work in Montana, you may need to file and pay individual income tax. These resources can help you determine your filing requirements and options.
Where's My Refund?
Individual Return Filing
Filing Requirements
Filing Status Income Tax Rates, Exemptions, and Deductions
Tax Credits
Montana Residency
Filing Information for Military Personnel and Spouses
Filing Information for Enrolled Tribal Members
Amending or Correcting a Return
Making Estimated Tax Payments
Update Your Montana Individual Income Tax Account Information
Late Filing and Nonfilers
Filing on Extension
Late Fees, Interest, and Penalties
Nonfilers
Frivolous Tax Positions
Forms
Montana Individual Income Tax Return (Form 2)
Montana Individual Income Tax Return (Form 2) Instruction Booklet
Montana Individual Income Tax Payment Voucher (Form IT)
Enrolled Tribal Member Exempt Income Certification and Return (Form ETM)
Prepaying Income Tax (Publication 1)
Montana Working Military Retirement and Survivor Benefit Exemption (Form WMRE)
Additional Resources
Where's My Refund?
Montana Free File Partner Offers
Approved Commercial Tax Software
Individual Income Tax Due Dates
Returns
April 15
Extension
October 15
Source: official text