The Montana Department of Revenue said Monday that "last-minute congressional changes" from the budget deal struck last week affect state individual income tax filings for the 2017 tax year, which people around the state have already started filing.

The Bipartisan Budget Act of 2018, signed Friday by President Donald Trump, extends federal deductions that expired at the end of 2016 and makes them available for tax year 2017.

The revenue department is changing the Montana Individual Income Tax Return Form 2, the long form for individual filing, to include the two restored deductions, the Tuition and Fees and the Qualified Mortgage Insurance Premium deductions.

Tax form 2

The Montana Department of Revenue is updating the long form for individual filers to add two deductions that were extended in the budget deal reached in Congress last week.

People who have not yet filed can visit the Department's My Revenue page at to get an updated form. Tax software companies are also updating their products, the department said, urging people to make sure they're using the most up-to-date version.

People who have already filed their returns and want to take the additional deductions will need to amend their tax return. By the end of last Friday, 87,745 Montanans had filed their state individual income tax returns. Of that, 86,169 e-filed their returns. Not all who file are eligible for the deductions. In an average year about 550,000 Montanans file state individual income tax returns.

Information and help is available at, 444-6900 or email

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