Filing your Montana state income tax return for the 2019 tax year can feel overwhelming, especially for individuals, sole proprietors, and small business owners new to the process. Montana taxpayers must file if their income meets certain thresholds, and understanding your taxable income, filing status, and available deductions is key to an accurate return. This guide is designed to walk you through each step of filing, helping you complete your return confidently and avoid unnecessary mistakes.

This article focuses solely on Montana state income tax requirements for the 2019 tax year. All information is based on official resources from the Montana Department of Revenue to ensure accuracy. If you are amending a previous tax return or filing late, it is important to confirm current rules, as filing deadlines, tax rates, and allowable credits may have changed since 2019. By following this guide, you can better understand how to calculate your Montana taxable income, determine the correct standard deduction or itemized deductions, and accurately report income such as wages, unemployment compensation, and capital gains.

Our goal is to help you file correctly, maximize any eligible tax credits, and avoid penalties. This includes explaining how to report your federal adjusted gross income, determine Montana taxable income, and properly account for certain items such as interest from federal bonds or contributions that may impact your tax liability. Whether you are filing as single, married, filing separately, or with another filing status, this guide will help you prepare your return, review it for accuracy, and submit it on time to secure any Montana state tax refund you may be owed.

Overview of Montana State Income Tax for 2019

Who Needs to File

Montana taxpayers must file a state tax return for the 2019 tax year if their income meets state filing requirements. These rules apply to both residents and nonresidents who earn Montana-sourced income.

  • Residents: Must file if their federal adjusted gross income (AGI) is above the filing threshold for their filing status.

  • Nonresidents and part-year residents: Must file a tax return if they earn income in Montana, which includes wages, self-employment earnings, rental income, or capital gains from property located in the state.

  • Other situations: Filing may be required if you owe Montana tax on income from sources such as unemployment compensation, federal bonds, or investments.

How Montana Taxes Are Calculated

Montana uses a graduated tax rate system, meaning your Montana taxable income is taxed in brackets. Your taxable income begins with your federal adjusted gross income, then adjusts for certain items specific to Montana.

  • Adjustments: Can include interest from federal bonds, specific contributions, or deductions unique to Montana law.

  • Deductions and exemptions: To reduce taxable income, taxpayers may claim standard or itemized deductions, as well as personal exemptions.

  • Credits: Certain tax credits can lower the amount of state income tax owed and may increase your refund.

2019 Filing Deadlines

Most Montana state tax returns for 2019 were due by April 15, 2020.

  • Late filing: Returns filed after the due date may be subject to penalties and interest on unpaid taxes.

  • Extensions: An extension gives you more time to file, but not more time to pay any taxes owed.

  • Amended returns: Taxpayers may amend a 2019 return if they discover errors or need to claim missed deductions or credits.

Key Changes Compared to 2018

While many Montana tax rules remained the same, several adjustments between the 2018 and 2019 tax years could affect how taxpayers calculated their Montana taxable income. Understanding these differences is essential when reviewing past returns or amending filings.

  • Tax rate brackets: Montana maintained its graduated tax rate system, but annual inflation adjustments slightly increased the income ranges for each bracket.

  • Standard deduction amounts: The standard deduction rose modestly for all filing statuses, allowing taxpayers to reduce taxable income without itemizing deductions.

  • Personal exemptions: Exemption amounts were adjusted to reflect inflation, providing a small tax break for households with dependents.

  • Credit updates: Some Montana-specific tax credits, such as the elderly homeowner/renter credit, had updated income limits and filing requirements.

By reviewing these changes, Montana taxpayers can ensure they apply the correct figures when completing their 2019 state income tax return and avoid errors that could delay a refund or result in additional taxes owed.

What Forms to Use

Selecting the correct forms is essential for accurately filing your Montana state income tax return for the 2019 tax year. Using the wrong form or forgetting required schedules can cause delays in processing your return or issuing your Montana state tax refund.

Main Individual Income Tax Form

For most Montana taxpayers in 2019, the primary form is Form 2—Montana Individual Income Tax Return. This form is used to report federal adjusted gross income, calculate Montana taxable income, and apply any deductions or credits.

  • Who uses Form 2: Individuals, sole proprietors, and small business owners filing a 2019 Montana tax return.

  • What it covers: Income from wages, self-employment, unemployment compensation, capital gains, interest, and other taxable sources.

  • Where to get it: The form is available for download on the Montana Department of Revenue website.

Common Schedules and Attachments

In addition to Form 2, many taxpayers must attach schedules that provide detailed calculations for particular items.

  • Schedule III: Used for Montana itemized deductions, such as mortgage interest, property taxes, and charitable contributions.

  • Schedule VII: Reports Montana tax credits, including those for energy conservation or elderly homeowner/renter assistance.

  • Other schedules: May be required for adjustments to income, reporting of business profits or losses, or allocating income from other states.

Important Note on Federal Forms

Since Montana taxable income is based on your federal taxable income, you will need a copy of your federal tax return for the same year. This ensures that your adjusted gross income, deductions, and credits are calculated consistently between the federal and state levels.

Step-by-Step: Completing Form 2 for 2019

Step 1: Gather Your Required Documents

Before you start filling out Form 2 for your 2019 Montana state income tax return, ensure you have all the necessary documents in one place. This includes W-2 forms from employers, 1099 forms for contract or freelance work, and statements for unemployment compensation, interest, or dividends. You should also have receipts or statements for deductible expenses, such as mortgage interest, property taxes, and charitable contributions, along with documentation for any credits you plan to claim. Having everything ready will help you avoid delays and ensure your return is accurate.

Step 2: Calculate Your Federal Adjusted Gross Income (AGI)

Your Montana taxable income starts with your federal adjusted gross income, so it is essential to complete your federal return first. Your AGI is calculated by adding all your income from wages, self-employment, investments, and other sources, then subtracting allowable adjustments such as retirement account contributions or student loan interest. Be aware that some federal deductions and exemptions may not apply in Montana, and certain items, such as interest from federal bonds, may need to be adjusted.

Step 3: Determine Your Montana Taxable Income

Once your AGI is set, make any Montana-specific adjustments required under state tax law. This may involve adding back certain income or subtracting unique deductions from Montana. You will then choose between claiming the standard deduction or itemizing your deductions, depending on which option results in the lowest taxable income. Be sure to claim personal exemptions for yourself, your spouse, and your dependents to reduce the income subject to Montana taxes further.

Step 4: Apply the Correct Tax Rate

Montana uses a graduated tax rate system, meaning that different portions of your income are taxed at different rates. Find the tax bracket that applies to your taxable income and calculate the tax owed using the tax tables in the Form 2 instructions. After determining your base tax amount, apply any eligible Montana tax credits to lower your final liability. This step ensures you only pay the amount you owe under state law.

Step 5: Review Your Return for Accuracy

Before submitting your return, take time to review it carefully. Double-check all calculations, make sure your name and Social Security number are correct, and ensure that you and your spouse (if filing jointly) have signed the return. Verify that all required schedules and attachments are included, as missing forms can cause the Montana Department of Revenue to delay or reject your return. A thorough review will help you avoid penalties and speed up the processing of your Montana state tax refund.

Filing Methods and Addresses

E-File via TransAction Portal (TAP)

Filing electronically through Montana’s TransAction Portal (TAP) offers faster processing, instant confirmation of receipt, built-in error checking, and the option for direct deposit of your Montana state tax refund. To e-file, create a TAP account, follow the on-screen prompts to upload your completed Form 2 and schedules, and submit your return. This method helps reduce delays and accurately records your Montana taxable income and other details.

Paper Filing

If you prefer to file on paper, gather your completed Form 2, all required schedules, and supporting income documents, such as W-2s, 1099s, and records for deductions or credits. Make copies of your entire return for your records before mailing. Paper filing may take longer to process, but it remains an option for those who do not wish to use electronic systems.

Mailing Addresses and Handling

  • With payment: For returns that include a fee, send your tax return and payment to the designated Montana Department of Revenue address. Using the correct address ensures the timely processing of your payment and prevents unnecessary delays in applying it to your tax year balance.

  • Without payment or zero balance: Use the specific address for returns without payment to ensure proper routing and processing. Mailing to the wrong address can delay your return and refund.

  • Postage and security: Always include the correct postage and consider using a traceable delivery service for added security. This ensures proof of mailing and helps you track your documents in case of postal delays.

Paying What You Owe

Online Payments via TAP

You can securely pay your 2019 Montana state income tax using ACH debit through the Montana Department of Revenue’s TransAction Portal (TAP). This online system allows you to make payments directly from your bank account or using a credit or debit card, although payments made by card may incur a processing fee. After payment, save your confirmation number for your records, to ensure proof of payment, and for future reference when reviewing your tax year history.

Check or Money Order

If you prefer to pay by mail, make checks or money orders payable to the Montana Department of Revenue. To appropriately credit your payment, include your Social Security number and the tax year in the memo line. Mail your payment to the official address listed for returns with payment in the Montana Department of Revenue instructions. Always allow extra mailing time before the payment deadline to avoid interest or penalties.

Penalties and Interest Basics

Montana taxpayers should pay their taxes by the official deadline to avoid penalties and monthly interest charges on late payments. The state calculates penalties and interest based on the amount owed and the number of days the payment is late. Even if you cannot pay the full amount, submitting partial payment can reduce the total interest and penalties you accrue, helping you manage your Montana tax liability more effectively.

Tracking Your Refund Or Balance Due

Track Your Refund

Montana taxpayers can use the state’s official online refund status tool to check the progress of their 2019 Montana state tax refund. You will need your Social Security number, filing status, and the refund amount from your return to access this information. Tracking your rebate online allows you to monitor its status without waiting for mailed updates, helping you plan when the funds will be deposited or mailed.

Processing Timelines

Electronic returns are typically processed within a few weeks, making them the fastest option for receiving your refund. Paper-filed returns can take longer due to additional handling, manual review, and fraud prevention checks. If your refund is delayed, it may be because the Montana Department of Revenue needs to verify certain items, such as your adjusted gross income or reported credits.

If a Balance Remains After Filing

If you owe additional Montana state income tax after filing, you can make a follow-up payment online through the TransAction Portal (TAP) or by mailing a check or money order. Always verify that your payment has posted by checking your TAP account or contacting the Montana Department of Revenue. Paying promptly helps avoid additional interest and penalties, which are calculated based on the balance owed and the number of days past due.

Final Filing Checklist

Use this checklist before filing your 2019 Montana state income tax return to ensure it is accurate and complete. A quick review can help Montana taxpayers avoid penalties and speed up any Montana state tax refund.

  • Completed Montana tax return: Ensure Form 2 and schedules are filled out with the correct federal adjusted gross income, Montana taxable income, and any adjustments for items like federal bonds or unemployment compensation.

  • Income records attached: Include W-2s, 1099s, and other income sources, such as capital gains or earnings from different states, for the whole tax year.

  • Deductions and exemptions applied: Verify standard or itemized deductions and personal exemptions based on your filing status, including dependents or children.

  • Credits included: Double-check eligible state income tax credits to lower your taxable income or increase your refund.

  • Payment or refund confirmed: If you owe taxes, choose a payment method—such as the TransAction Portal for secure online payments—or confirm your refund status.

  • Filed by deadline: Submit by the April due date to avoid interest and penalties from the Montana Department of Revenue.

Frequently Asked Questions

What if I missed the 2019 filing deadline?

You should file your 2019 Montana tax return as soon as possible to minimize penalties and interest. Filing late may result in a failure-to-file penalty, but it’s better to submit your return even if you cannot pay the full amount owed. Contact the Montana Department of Revenue to discuss payment options or installment plans.

Can I e-file my 2019 Montana return for free?

Montana offers eligible taxpayers free e-filing through the TransAction Portal (TAP). This service allows you to file securely online without fees. Visit the Montana Department of Revenue website to check eligibility requirements and access the portal for step-by-step guidance on filing your 2019 return electronically.

What deductions or subtractions do Montana filers most commonly overlook?

Many Montana taxpayers overlook subtractions such as federal bond interest, unemployment compensation exclusions, and specific retirement contributions. Reviewing Montana-specific schedules carefully can help you claim these deductions, which reduce your taxable income and may result in significant tax savings when filing your 2019 Montana tax return.

How do I request an extension for a 2019 return, and does it extend the time to pay?

You can request an extension by filing Form MT-2848 or submitting a federal extension form recognized by Montana. This extension gives extra time to file your return, but does not extend the deadline to pay any taxes owed. To avoid penalties, pay estimated taxes by the original filing deadline.

Can we file jointly if one spouse moved to or from Montana during 2019?

Yes, married couples can file jointly even if one spouse was a part-year resident. The couple must combine income and correctly allocate Montana-source income and credits based on residency status. Follow Montana’s specific filing rules for part-year residents to ensure accurate reporting.

How do I amend my 2019 return if I find an error later?

To amend your 2019 Montana tax return, file Form 2X, the Amended Individual Income Tax Return, with corrected information and supporting documentation. Follow the Montana Department of Revenue instructions carefully to ensure your amendment is processed properly and any changes to your tax liability or refund are accurately reflected.