Gallatin County, Montana Property Taxes
Property Taxes in Gallatin County, Montana
Median Gallatin County effective property tax rate: 0.65%, significantly lower than the national median of 1.02%.
Median Gallatin County home value: $642,000
Median annual Gallatin County tax bill: $4,053, higher than the national median property tax bill of $2,400.
How are property taxes in Gallatin County calculated?
Property taxes in Gallatin County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Bozeman or another part of Gallatin County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Gallatin County, Montana Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.65%
Estimate Property Tax Bill
$4,173
$3,872
How Does the Gallatin County Property Tax Calculator Work?
Use this Gallatin County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Gallatin County's median effective tax rate of 0.65% to generate your estimate.
Enter your property's estimated assessed value — the figure the appraisal district assigns for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. Gallatin County's median effective tax rate is lower than the Montana median tax rate of 0.78% and far below the national median property tax rate of 1.02%.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Gallatin County.
Property Tax Rates Across Gallatin County, Montana
What Are Effective Property Tax Rates Across Gallatin County?
Local government entities set tax rates, which vary widely across Gallatin County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Gallatin County's effective property tax rate to other counties in Montana or the U.S. median of 1.02%.
Gallatin County's median effective rate stands at 0.65%, which is lower than the national median of 1.02%. Within Gallatin County, the highest rate is found in Belgrade at 0.67%, while Big Sky has the lowest at 0.44%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Gallatin County Tax Rate
0.65%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Montana Tax Rate
0.78%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Gallatin County, Montana
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Belgrade | 0.60% | 0.61% | 0.67% | 0.82% | 0.83% |
| Big Sky | 0.44% | 0.44% | 0.44% | 0.48% | 0.54% |
| Bozeman | 0.52% | 0.55% | 0.67% | 0.67% | 0.67% |
| Gallatin Gateway | 0.40% | 0.44% | 0.48% | 0.48% | 0.58% |
| Manhattan | 0.56% | 0.56% | 0.66% | 0.67% | 0.67% |
| Three Forks | 0.54% | 0.55% | 0.65% | 0.65% | 0.65% |
| West Yellowstone | 0.47% | 0.47% | 0.47% | 0.48% | 0.48% |
| Willow Creek | 0.58% | 0.58% | 0.58% | 0.58% | 0.59% |
| Wilsall | 0.47% | 0.50% | 0.51% | 0.53% | 0.58% |
| W Yellowstone | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Gallatin County, Montana
When examining property taxes in Gallatin County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Gallatin County appraisal district estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices:
In Gallatin County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of May.
Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Gallatin County.
For example, the median tax bill in Gallatin County is $4,053, with tax bills ranging significantly across the county. Big Sky has the highest median home price at $1,330,950.
Property Tax Assessment Values Across Gallatin County, Montana
Source: Ownwell
$366,700
$848,825
$1,330,950
Median Gallatin County Market Value
$642,000
Median Montana Market Value
$317,000
Median United States Market Value
$235,294
Property Tax Assessment Values Across Gallatin County, Montana
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Belgrade | $120,630 | $399,800 | $497,500 | $642,750 | $891,010 |
| Big Sky | $599,400 | $825,600 | $1,330,950 | $2,603,775 | $4,578,900 |
| Bozeman | $352,100 | $520,700 | $695,300 | $943,900 | $1,330,500 |
| Gallatin Gateway | $150,500 | $481,211 | $905,758 | $1,445,103 | $2,131,788 |
| Manhattan | $147,053 | $422,850 | $563,000 | $795,806 | $1,080,221 |
| Three Forks | $77,141 | $200,892 | $371,600 | $473,263 | $623,320 |
| West Yellowstone | $89,900 | $360,000 | $523,900 | $724,720 | $986,800 |
| Willow Creek | $63,000 | $209,646 | $366,700 | $560,600 | $721,823 |
| Wilsall | $116,994 | $202,467 | $550,276 | $722,007 | $963,344 |
| W Yellowstone | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Gallatin County, Montana
Gallatin County property tax bills are based on the assessed value of a home, which is then multiplied by the local tax rates that apply to the property. The assessed value is influenced by the home’s market value, location, and any local taxing jurisdictions that fund schools, county services, and other public needs. For homeowners, this means a higher assessed value generally leads to a larger tax bill, while a lower assessed value can reduce what is owed.
With a median home price of $642,000, property taxes in Gallatin County can vary widely from one homeowner to another. The 25th percentile tax bill is $2,901, while the 75th percentile tax bill is $5,428, and the 90th percentile tax bill reaches $7,842. That range shows how much tax bills can differ based on property value and location. The highest median tax bill is $5,884 in Big Sky, while the lowest median tax bill is $2,144 in Willow Creek.
Median Gallatin County Tax Bill
$4,053
Median Montana Tax Bill
$2,559
Median United States Tax Bill
$2,400
Property Tax Bills Across Gallatin County, Montana
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Belgrade | $818 | $2,751 | $3,729 | $4,553 | $5,940 |
| Big Sky | $2,643 | $3,674 | $5,884 | $12,436 | $24,302 |
| Bozeman | $2,253 | $3,223 | $4,293 | $5,713 | $7,896 |
| Gallatin Gateway | $683 | $2,203 | $4,463 | $6,538 | $9,790 |
| Manhattan | $748 | $2,593 | $3,517 | $4,861 | $6,525 |
| Three Forks | $439 | $946 | $2,268 | $2,900 | $3,768 |
| West Yellowstone | $440 | $1,704 | $2,466 | $3,403 | $4,746 |
| Willow Creek | $349 | $1,151 | $2,144 | $3,170 | $4,252 |
| Wilsall | $428 | $858 | $2,628 | $3,681 | $5,504 |
| W Yellowstone | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | June 1 |
Links | |
|---|---|
| Gallatin Tax Assessor | |
| Website | svc.mt.gov |