| Form 2 SCH I | Montana Additions to Federal Adjusted Gross Income | 12/12/2014 |
| Form 2 SCH II | Montana Subtractions to Federal Adjusted Gross Income | 12/12/2014 |
| Form 2 SCH III | Montana Itemized Deductions | 12/12/2014 |
| Form 2 SCH IV | Non-Resident/Part-Year Resident Tax | 12/12/2014 |
| Form 2 SCH V | Montana Tax Credits | 12/12/2014 |
| Form 2 SCH VI | Credit for Income Tax Liability Paid to Another State or County | 12/12/2014 |
| Form 2 SCH VIII | Reporting of Special Transactions | 12/12/2014 |
| 2 Worksheet II | Tax Benefit Rule for Federal Income Tax Refund | 12/12/2014 |
| 2 Worksheet III - IV | Qualified Capital Gain Exclusion and Partial Pension and Annuity Income Exemption | 12/12/2014 |
| 2 Worksheet IX | Tax Benefit Rule for Recoveries of Itemized Deductions | 12/24/2014 |
| 2 Worksheet V and IV | Standard Deduction, Qualified Mortgage Insurance Premiums Deduction and Itemized Deduction Limitation | 12/12/2014 |
| 2 Worksheet V | Standard Deduction | 12/03/2012 |
| 2 Worksheet VI | Qualified Mortgage Insurance Premiums Deduction | 12/03/2012 |
| 2 Worksheet VIII | Taxable Social Security Benefits | 12/12/2014 |
| Form 2101 | W-2 Withholding Declaration | 02/23/2012 |
| Form 2441-M | Child and Dependent Care Expense Deduction | 04/08/2014 |
| Form 2EC | Montana Elderly Homeowner/Renter Credit | 01/12/2015 |
| Form 2EZ | Montana Individual Income Tax Return - Short Form | 08/25/2014 |
| Form 2-Long | Montana Individual Income Tax Return - Long Form | 02/09/2015 |
| Form 2M | Montana Individual Income Tax Return - Intermediate Form | 02/10/2015 |
| 2M-WKST | Worksheets | 12/12/2014 |
| Form AEPC | Alternative Energy Production Credit | 10/21/2014 |
| Form AFCR | Alternative Fuel Credit | 10/21/2014 |
| Form AMD | Montana Individual Income Tax Amended Return Reconciliation | 12/23/2014 |
| Form ATL | Assumption of Montana Tax Liabilities | 06/25/2014 |
| Form BBSC | Bio diesel Blending and Storage Credit | 10/21/2014 |
| Form CC | College Contribution Credit | 10/21/2014 |
| CIT (formerly CLT-4) | Corporate Income Tax Return | 02/02/2015 |
| CIT-UT (formerly CLT-4-UT) | Underpayment of Estimated Tax | 10/20/2014 |
| Form CR-T | Application for Tax Certificate | 02/04/2014 |
| Form DCAC | Dependent Care Assistance Credits | 10/21/2014 |
| Form DS-1 | Disability Income Exemption | 05/21/2014 |
| Form ECC | Elderly Care Credit | 04/10/2014 |
| Form ENRG-A | Geothermal System Credit | 10/21/2014 |
| Form ENRG-B | Alternative Energy System Credit | 06/20/2014 |
| Form ENRG-C | Energy Conservation Installation Credit | 06/20/2014 |
| Form ESA | Estimated Tax Annualization Worksheet | 12/23/2014 |
| Form ESA-FID | Fiduciary Estimated Tax Annualization Worksheet | 12/23/2014 |
| Form ESL | Extension of Statute of Limitations | 06/25/2014 |
| Form EST-I | Underpayment of Estimated Tax by Individuals and Fiduciaries | 08/13/2014 |
| Form ESW | Montana Individual Estimated Income Tax Worksheet | 12/23/2014 |
| Form ESW-FID | Montana Fiduciary Estimated Income Tax Worksheet | 12/23/2014 |
| Form ETM | Enrolled Tribal Member | 08/19/2014 |
| Form EXT | Extension Payment Worksheet | 12/23/2014 |
| Form EXT-FID | Extension Payment Worksheet | 12/23/2014 |
| Form FID-3 | Estates and Trusts (Fiduciary) Income Tax Return | 12/23/2014 |
| Form FPC | Film Production Credi | 10/21/2014 |
| Form FPC-AF | Film Production Credit Application Fee | 10/21/2014 |
| Form FPC-PP | Film Production Credit - Submission of Costs - End of Principal Photography | 10/21/2014 |
| Form FPC-RD | Film Production Credit Residency Declaration | 10/21/2014 |
| Form FRM | Farm and Ranch Risk Management Account | 12/23/2014 |
| Form FTB | First Time Home Buyer Savings Account | 12/23/2014 |
| Form HI | Health Insurance for Uninsured Montanans Credit | 10/21/2014 |
| Form ICFUF | Intermediate Care Facility Utilization Fee | 04/25/2005 |
| Form INA-CT | Affidavit of Corporate Inactivity | 12/16/2014 |
| Form IND | Tribal Member Certification | 08/15/2012 |
| Form INH-4 | Application for Determination of Estate Tax | 12/17/2009 |
| Form IT Payment Voucher | Individual Income Tax Payment Voucher: (Use this form for estimated tax, extension, or amended return payments) | 01/06/2014 |
| Form IUFC | Infrastructure User Fee Credit | 10/21/2014 |
| Form MHPE | Mobile Home Park Exclusion | 10/21/2014 |
| Form MINE-CERT | Application and Affidavit for Certification and Approval of Mineral and Coal Exploration Incentive Credits | 10/21/2014 |
| Form MINE-CRED | Mineral and Coal Exploration Incentive Credit | 10/21/2014 |
| Form MSA | Montana Medical Care Savings Account | 01/07/2014 |
| Form MT-R | Reciprocity Exemption from Withholding for North Dakota residents who work in Montana | 12/23/2014 |
| Form Nexus | Nexus Questionnaire | 06/25/2014 |
| Form NOL | Montana Net Operating Loss | 12/23/2014 |
| Form NOL-Pre-99 | Net Operating Loss Worksheet | 12/23/2014 |
| Form OSC | Oil Seed Crushing and Biodiesel/Biolubricant Production Facilities | 10/21/2014 |
| Form POA | Power of Attorney | 03/21/2014 |
| Form QEC | Qualified Endowment Credit | 10/21/2014 |
| Form RCYL | Recycling Credit/Deduction | 10/21/2014 |
| Form RDF-CT | Application to be considered a Research and Development Firm | 06/25/2014 |
| Form RSCH | Increase Research and Development Activities Credit | 12/20/2010 |
| Schedule K-1 | Beneficiary's Share of Income (Loss), deductions and credits | 12/23/2014 |
| Form TELC | Temporary Emergency Lodging Credit | 10/21/2014 |
| Form VT | Veterans Program Contribution/Deduction | 12/23/2014 |
| Form WE-ELECT | Water's Edge Election | 05/13/2014 |
| Worksheets I and II | Credit for Income Tax Liability Paid to Another State or Country - Full Year Resident Only and Part Year Resident Only | 12/23/2014 |