2024 Montana State Tax Deadlines
If you are a resident or have been involved in significant business operations within Montana, then you might be required to file Montana State Taxes. We explore the most important tax deadlines and tax extensions for Montana in 2024.
Montana Business Tax Deadlines for 2024
C Corporation
Montana C Corporation Tax Deadlines for 2024
You must file & pay Corporate Income Taxes in Montana by April 15, 2025.
- File Online with Montana Department of Revenue’s e-filing system.
- File by Mail must be postmarked by the due date.
Applicable forms:
Form CIT – Montana Corporation Income Tax Return
Extension to File Taxes in Montana for 2024
You must send payment for taxes in Montana for the fiscal year 2024 by Mayl 15, 2025.
The Extension Deadline is November 15, 2025, to file your Montana corporate income tax return.
Montana automatically grants a 6-month extension for filing corporate income tax returns. This means you do not need to file for an extension in Montana.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Pass-Throughs
Montana S Corporation & Partnership Tax Deadlines for 2024
You must file in Montana by March 15, 2025.
- File Online with Montana Department of Revenue’s e-filing system.
- File by Mail must be postmarked by the due date.
Applicable forms:
Form PTE – Montana Pass-Through Entity Tax Return.
Extension to File S Corporation & Partnership Taxes in Montana for 2024
You must send payment for taxes in Montana for the fiscal year 2024 by March 15, 2025.
The Extension Deadline is September 15, 2025, to file your Montana S Corporation & Partnership income tax return.
Montana automatically grants 6-month extensions on filing pass-through entity tax returns. This means you do not need to file for an extension in Montana.
This is an extension to FILE, not an extension to PAY – payment is still due March 15, 2025.
Montana Individual Tax Deadlines for 2024
Estimated Tax Deadline for Montana 2024
Estimated tax payments are made:
- April 15, 2024,
- June 17, 2024,
- September 16, 2024,
- January 15, 2025.
See Form IT instructions for the amount to pay with each voucher.
Individual Tax Deadline for Montana 2024You must file & pay Individual Income Taxes in Montana by April 15, 2025.
- File Online with Montana Department of Revenue’s e-filing system
- File by Mail must be postmarked by the due date
Applicable forms:
Form 2 – Montana Individual Income Tax Return
Extension to File Taxes in Montana for 2024
You must send payment for taxes in Montana for the fiscal year 2024 by April 15, 2025.
The Extension Deadline is October 15, 2025, to file your Montana Individual Income tax return.
Montana automatically grants 6 months extensions on filing personal income taxes. This means you do not need to file for an extension in Montana.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Estates Tax Deadline for Montana 2024
Montana does not have an Estate Tax.
Farmer and Fisherman Taxes for Montana 2024
If at least 2/3 of your gross income for the taxable year is derived from farming, you may pay estimated tax at any time on or before January 15, 2025. If you wait until January 15, 2025, you must pay the entire balance of the estimated tax. However, if farmers file their tax return on or before March 1, 2025, and pay the total tax at that time, they need not file estimated tax.
Sources
- Montana Department of Revenue - Individual Filing Information
- Montana Department of Revenue - Corporate Due Date
- Montana Department of Revenue - Tax Forms
The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
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