Montana's New Property Tax Law: Relief for Residents, Hike for Vacation Homes

If you live in Montana—or own property here—you’ve likely heard the buzz: Montana just passed one of the most sweeping changes to its property tax system in decades. Whether you’re a longtime resident, a short-term rental operator, or someone with a second home in Big Sky country, here’s what you need to know.

A Tax Code Overhaul with a Local Focus
Earlier this year, Montana lawmakers approved two bills that will reshape how the state taxes real estate—especially when it comes to primary residences, second homes, and short-term rentals (STRs). At the heart of the new law is the goal of giving financial relief to full-time residents while shifting more of the tax burden onto properties used as vacation homes or investment rentals.
The Big Idea:

• Live in it or rent it long-term? You’ll likely pay less in property taxes.
• Use it part-time or for short-term stays? You’ll probably pay more—in some cases, a lot more.

Who Gets a Tax Break?
Under the new rules, properties that meet the criteria for a "homestead" will qualify for a tax exemption that significantly reduces their taxable value.
Qualifying properties include:

• Primary residences where the owner lives at least 7 months of the year.
• Long-term rentals, leased on a monthly basis for at least 7 consecutive months.

If your property falls into one of these two categories, you can expect property tax savings of up to 20% by 2026.
Montana is also giving a $400 property tax rebate in 2025 to qualifying homeowners. If you receive the rebate, you’re automatically enrolled in the new homestead exemption system.

Who Pays More?
Now comes the more controversial part: second homes and short-term rentals (STRs) will see a major increase in taxes under the new law.
Some areas—especially tourism hotspots like Missoula, Bozeman, and Flathead County—could see tax hikes of 60–100% or more on non-primary residences.
For example:

• A second home in Missoula valued at $800,000 could see an annual tax jump of several thousand dollars.
• STR owners operating Airbnbs or VRBOs may find their investment returns squeezed significantly.

Why the sharp increase?Lawmakers argue that out-of-state homeowners and STR investors benefit from Montana’s beauty and infrastructure but don’t pay income taxes here. This shift is designed to rebalance the scales by lowering taxes for locals and making out-of-state property owners shoulder more of the cost.

How It Works
The law changes how a property’s taxable value is calculated. In simple terms:

• Homestead properties get a lower tax rate and tiered exemptions based on property value.
• Second homes and STRs are taxed at higher flat rates, with fewer deductions.
• The higher the property value, the steeper the increase if the property isn’t your primary residence.

Here’s a simplified example:

Property Type                   Home Value        Estimated Annual Tax (2026)
Primary Residence             $500,000                           ~$3,000
Short-Term Rental             $500,000                   ~$5,000–$6,000

What Property Owners Need to Do
Property Owner Type                                     Action Required
Full-Time Resident               Apply for the homestead exemption by March 1, 2026 (unless you got the 2025 rebate).

Long-Term Landlord            Make sure your lease qualifies; then apply for the exemption.
Short-Term Rental Owner  Expect higher taxes. Consider converting to long-term rental or revising your business                                                    model.
Second Home Owner         Prepare for increased costs or reclassify your use, if possible. 

Fraud Warning: Claiming an exemption you don’t qualify for can result in heavy fines, back taxes, and even jail time. The state is taking this seriously.

Why This Matters
For many Montanans, this tax reform is a welcome relief. Home values have surged in recent years, driven in part by out-of-state buyers and vacation rental demand. But skyrocketing property taxes have put pressure on full-time residents—especially seniors and middle-income families.
This law aims to level the playing field: keeping Montana affordable for those who live and work here, while asking part-time residents and investors to contribute a bit more.
Still, not everyone is happy. Some argue the law punishes families who’ve owned lake cabins for generations. Others worry that higher taxes on STRs could reduce tourism income in small towns.

Final Thoughts
Montana’s new property tax law is bold, and its effects will ripple across the state for years to come. Whether it strikes the right balance between fairness and affordability is still up for debate. But one thing is clear: if you own property here, now is the time to reassess your strategy.