Gallatin County Property Tax Calculator
Locality estimate page for Gallatin County, Montana. Use this county/locality rate for faster screening, then confirm parcel-specific details with your local tax authority.
County/Locality Effective Rate
0.59%
State Effective Rate
0.61%
Sample Annual Tax Difference
-$85
Median Home Value (ACS)
$667,600
Median Annual Tax Bill (ACS)
$3,933
Owner-Occupied Households
31,270
The typical owner-occupied home in Gallatin County is valued at $667,600 with a median real estate tax bill of $3,933 per year — an effective rate of 0.59%. Both figures come from the same ACS release, so the ratio is an estimate rather than an aggregate of individual bills.
State Mortgage Context: Montana
Most counties in this state follow the standard FHA floor framework.
State Effective Tax Rate
0.61%
FHA 1-Unit Floor
$541,287
FHA 1-Unit Ceiling
$1,249,125
In Gallatin County, Montana, the current county-level estimate is 0.59%, or approximately $2,360 annually on a $400,000 home.
How to Use This County Estimate
Step 1
Enter your property value and assessment assumptions.
Step 2
Apply exemptions that may reduce taxable value.
Step 3
Compare county/locality estimate against statewide fallback.
Gallatin County Property Tax Snapshot
Estimated effective rate: 0.59% · vs Montana: 0.61% · vs national benchmark: 0.90%
| Home value | Estimated annual tax | Estimated monthly tax |
|---|---|---|
| $250,000 | $1,475 | $123 |
| $400,000 | $2,360 | $197 |
| $500,000 | $2,950 | $246 |
| $750,000 | $4,425 | $369 |
| $1,000,000 | $5,900 | $492 |
Compare Nearby Property Taxes
- Gallatin County0.59%
- Flathead County0.58%
- Yellowstone County0.81%
- Missoula County0.88%
Source Transparency
Source: U.S. Census Bureau, ACS 5-Year Estimates (B25103 / B25077)
View sourceLast updated: August 2026
Estimates only. Confirm parcel-specific amounts with the official local taxing authority.
Need Statewide Context?
Visit Montana mortgage snapshot or return to the national calculator hub.