Montana Property Tax Explained: 2026 Rates, the New Tiered System, and How to Save
Montana overhauled its property tax system in 2026 with new tiered rates. Here's what changed, what you'll pay by county, and how long-term rentals save compared to short-term rentals.
What Changed in 2026
Montana completely restructured how residential property gets taxed starting in 2026. If you own property here — especially investment property — this matters a lot.
The old system used a flat residential rate. The new system uses tiered rates based on your property's market value, and it treats different types of property ownership very differently.
Here's the new structure, straight from the Montana Department of Revenue:
The New Tiered Rate Structure
For primary residences and long-term rentals (leases of 28+ days, rented for at least 7 months per year):
| Market Value Tier | Tax Rate |
|---|---|
| First $378,000 | 0.76% |
| $378,001 – $756,000 | 0.90% |
| $756,001 – $1,511,999 | 1.10% |
| $1,512,000 and above | 1.90% |
For second homes, short-term rentals (under 30 days), and vacant residential lots:
| Type | Tax Rate |
|---|---|
| All of the above | Flat 1.90% |
Read that again. A $400,000 long-term rental pays an effective rate around 0.79%. That same property as a short-term Airbnb pays a flat 1.90% — more than double.
What This Means in Real Dollars
Let's compare taxes on a $500,000 property under different ownership scenarios:
| Scenario | Annual Tax |
|---|---|
| Primary residence or long-term rental | ~$3,980 |
| Second home or short-term rental | $9,500 |
That's a $5,520 per year difference on the same property. Over 10 years, that's $55,000 more in taxes for running a short-term rental versus a long-term one.
This is Montana's clear policy signal: the state wants long-term housing available for residents, not vacation rentals bought up by out-of-state investors.
Statewide Average Rate
Montana's effective property tax rate averages 0.72% statewide, ranking 33rd among U.S. states. That's well below the national average of 0.92%.
What does that mean in practice? On a median-priced Montana home (~$450,000), you'd pay roughly $3,240/year in property taxes. Compare that to New Jersey (2.23%, or $10,035 on the same value) and Montana looks very attractive for investors.
Tax Rates by County
Property tax rates vary significantly across Montana's 56 counties. Here are the extremes:
Lowest Property Tax Counties
| County | Effective Rate | Annual Tax on $400K Home |
|---|---|---|
| Madison | 0.41% | $1,640 |
| Carter | 0.44% | $1,760 |
| Judith Basin | 0.45% | $1,800 |
| Sweet Grass | 0.49% | $1,960 |
| Golden Valley | 0.51% | $2,040 |
Highest Property Tax Counties
| County | Effective Rate | Annual Tax on $400K Home |
|---|---|---|
| Blaine | 1.34% | $5,360 |
| Roosevelt | 1.28% | $5,120 |
| Sheridan | 1.23% | $4,920 |
| Valley | 1.18% | $4,720 |
| Dawson | 1.14% | $4,560 |
Major Metro Counties
| County (City) | Effective Rate | Annual Tax on $400K Home |
|---|---|---|
| Yellowstone (Billings) | ~0.80% | $3,200 |
| Missoula (Missoula) | ~0.85% | $3,400 |
| Gallatin (Bozeman) | ~0.75% | $3,000 |
| Lewis & Clark (Helena) | ~0.82% | $3,280 |
| Cascade (Great Falls) | ~0.90% | $3,600 |
You can look up your specific county's rate using the Montana Revenue Department's comparison tool.
How Property Gets Assessed
Montana assesses property based on market value — what it would sell for in a typical arm's-length transaction. The state reappraises all property on a regular cycle.
Your tax bill is calculated as:
Market Value × Tax Rate = Annual Property Tax
If you believe your assessment is too high, you can appeal. The process starts at the county level with the Department of Revenue office, and there are deadlines you must meet (typically 30 days after receiving your assessment notice).
Check annual changes by county to see how assessments shifted in your area.
How Long-Term Rental Investors Benefit
The 2026 changes are a gift to landlords running traditional rentals:
- You get the tiered rates — same as primary homeowners. Most of your property value falls in the lowest 0.76% tier.
- Your competition (STRs) pays more — Airbnb operators face the flat 1.90% rate, which cuts into their margins and may push some to convert to long-term rentals (reducing your vacancy).
- Cash flow improvement — On a $400K rental, you're saving ~$4,500/year vs. an STR owner. That's real money that flows straight to your bottom line.
To qualify for tiered rates as a rental, your leases must be 28 days or longer, and the property must be rented as a tenant's primary residence for at least 7 months per year. Standard month-to-month and annual leases qualify easily. Anything shorter (vacation rentals, Airbnb-style short stays) gets the flat 1.90% rate.
Note: Long-term rental owners had to apply between December 1, 2025 and March 1, 2026 for the 2026 tax year. Check with the Montana Department of Revenue for future deadlines.
3 Ways to Reduce Your Property Tax Bill
1. Appeal Your Assessment
If comparable homes in your area sold for less than your assessed value, file an appeal with your county DOR office. Bring recent sales data (comps within 6 months, similar square footage and condition).
2. Claim Applicable Exemptions
Montana offers property tax exemptions for:
- Veterans (disabled veteran exemption)
- Low-income homeowners
- Agricultural land (taxed at productivity value, not market value)
Check with your county assessor for current eligibility requirements.
3. Convert Short-Term Rentals to Long-Term
If you're running an STR that's marginally profitable, run the numbers with the new tax differential. A property earning $2,500/month as an Airbnb might actually net more as a $1,800/month long-term rental once you factor in the $5,000+ annual tax savings plus reduced management costs.
Key Takeaways
- Montana's 2026 tiered system heavily favors primary residences and long-term rentals
- Short-term rentals and second homes pay more than double the rate on properties under $756K
- County-level variation is huge — a 0.41% rate vs. 1.34% rate is a 3x difference on the same property value
- Montana's overall tax burden remains well below the national average
- Long-term rental investors got a structural advantage baked into state law
Related Reading
- 5 Best Montana Cities for Rental Investment — See how property taxes factor into real cash-flow numbers by city
- Buying Land in Montana: Water Rights & Access — Tax is just one cost — make sure the land itself is viable