SB 434 provides a property tax rebate of up to $400 for Montana homeowners who lived in their principal residence for at least 7 months during tax year 2024. It directly affects individual homeowners (not businesses or multiple properties) who paid Montana property taxes on their primary residence, with the rebate amount capped at $400 or the actual taxes paid, whichever is lower. To claim the rebate, homeowners must submit an application electronically (August 15-October 1, 2025) or by mail (postmarked by October 1), including proof of residency and property ownership. The rebate is not subject to Montana income tax, and false claims may result in penalties of 300% of the rebate plus 12% annual interest.
SB 99 amends Montana tax law to treat certain rental and accommodations income earned by tax-exempt organizations as "unrelated business income" subject to taxation. This affects nonprofits and other exempt groups that previously did not pay tax on such income, including short-term rentals or property leasing activities. The bill creates new reporting requirements for these organizations and specifies how to calculate the tax based on Montana’s existing tax rates and sourcing rules. It modifies existing statutes to clarify that this income must now be included in taxable income calculations, rather than remaining exempt. The change applies to income generated from business activities unrelated to the organization’s exempt purpose.
HB 313 aimed to establish a grant program to provide funding for public swimming pools operated by local governments and nonprofit organizations. It would have created a "public swimming pool infrastructure account" and appropriated $5 million from the state general fund, to be administered by the Department of Commerce. These grants were intended to support capital construction, maintenance, repair projects, and equipment purchases for eligible aquatic facilities. Grants of $25,000 or more would have required a 1:5 match, and funding was limited to $1 million per county and $500,000 per project.
HB 836 proposed creating a property tax deferral loan program for eligible senior citizens and active-duty military personnel in Montana. This program would allow qualifying homeowners to defer paying the portion of their property taxes that exceeds their 2022 property tax amount. The state's Board of Housing would provide these loans, which would accrue simple interest and become a lien on the primary residence. The loan, including interest, would generally be repaid when the property is sold or transferred, or upon the death of the homeowner, though a surviving spouse might be able to assume the loan.
HB 155 revises property tax laws for Class Four residential and commercial properties. For residential properties, it introduces a graduated tax rate for single-family homes above $1.5 million in market value and sets specific rates for vacant residential lots under $50,000 and certain rental multifamily units over $2 million. For commercial and industrial properties, the bill exempts the first $200,000 of market value from taxation and establishes specific tax rates for the remaining value, with a different rate for golf courses. The bill would have taken effect immediately and applied retroactively to property tax years beginning after December 31, 2024.
HB 154 would have created a new tax credit for Montana renters and homeowners with household incomes under $150,000. The credit would equal 75% of either property taxes paid (for homeowners) or 15% of rent paid (for renters), minus an income-based percentage (ranging from 1% to 9.5%). To qualify, residents needed to have lived in Montana for at least 9 months and occupied a home or rental for 6 months during the tax year. The bill died in committee in May 2025 without becoming law.
HB 220 would establish a refundable child tax credit for Montana resident taxpayers with children under age 5. It provides a $1,200 credit per qualifying child, phasing out for taxpayers with federal adjusted gross income over $56,000 (with a $50,000 phaseout threshold). The credit is refundable, meaning eligible families could receive it as a payment even if they owed no state income tax. The bill also adds the child tax credit to Montana’s required periodic review schedule for tax credits. The bill died in committee on May 22, 2025, and did not become law.
HB 334 sought to revise laws concerning disaster and emergency funding. The bill proposed to increase the statutory appropriation available to the Governor's office for declared emergencies from $16 million to $22 million per two-year period, effective July 1, 2025. It also would have allowed the Department of Military Affairs to use up to $3 million annually from this fund for disaster and emergency services activities, such as planning, training, and response, without a formal governor's declaration. Unspent funds at the end of each biennium would continue to be transferred to the fire suppression account.
HB 827 aimed to revise the taxation of Social Security benefits at the state level in Montana. The bill proposed to modify how the federal calculation for taxing Social Security benefits is applied when determining an individual's state income tax. This change would have directly affected Montana residents receiving Social Security benefits by potentially altering the portion of those benefits subject to state income tax. The bill included provisions for a delayed effective and applicability date.
HB 424 revises property tax classifications for data center property. It modifies the types of property included in Class seventeen for qualified data centers, and extends the timeframe within which this data center property must be built. The bill also revises ownership requirements for Class seventeen data center property. Additionally, it updates the classification of certain dedicated communications infrastructure in Class thirteen, extending its relevant timeframe.
