Montana Property Tax Calculator (2026)
The Montana median effective property tax rate is 0.72% for 2026 — median real-estate taxes paid divided by median home value (U.S. Census Bureau ACS 2024). On a $400,000 home that is about $2,880 a year (~$240 a month). Montana ranks #32 of 51 nationally. Enter your home value below for an instant estimate, then confirm the exact rate with your county.
What is the Montana property tax rate in 2026?
Montana's median effective property tax rate is 0.72%. On the state median home value of $375,800, the typical bill is about $2,693 a year.
How much is property tax on a $400,000 home in Montana?
About $2,880 a year, or roughly $240 a month, at the 0.72% median effective rate.
Where does Montana rank nationally?
Montana ranks #32 of 51 by median effective rate (1 = highest), near the middle of the national range. That is 0.22% below the 0.94% US average.
Is this my exact property tax bill?
No. Your county sets the millage and assessed value. This uses the state median; homestead, senior, and veteran exemptions can lower your bill.
How does property tax work in Montana?
Montana property tax is set locally, not by the state. Your county assessor values your home, then applies a local millage (tax) rate. Cities, school districts, and special districts each add a share.
Because rates vary by county, this page uses the Montana median effective rate of 0.72%. That is the median tax paid divided by the median home value, from the U.S. Census Bureau (ACS 2024). It is a benchmark, not your exact bill.
How much is property tax on a home in Montana?
| Home value | Rate (0.72%) | Annual tax | Monthly |
|---|---|---|---|
| $200,000 | 0.72% | $1,440 | $120 |
| $400,000 | 0.72% | $2,880 | $240 |
| $375,800 (state median) | 0.72% | $2,693 | $224 |
| $750,000 | 0.72% | $5,400 | $450 |
How do you calculate Montana property tax by hand?
- Find your home's assessed value on your county notice.
- Apply your county's assessment ratio if it uses one.
- Multiply the taxable value by the local millage (tax) rate.
- For a quick estimate, multiply your home value by 0.72% (the Montana median effective rate).
What exemptions can lower your Montana property tax?
Most counties offer a homestead exemption on your primary home. Many add relief for seniors, veterans, and people with disabilities. These lower your taxable value, so your real rate is often below the median.
Rules and amounts vary by county and change over time. Check your county assessor for the exemptions you qualify for before relying on a figure.
Why is your actual Montana bill different from this estimate?
Three things move your bill away from the state median. Your county rate may be higher or lower than the median. Your assessed value can lag the market. And exemptions reduce the taxable amount.
Use this page to budget and compare. For the exact number, use your latest assessment notice and your county's current millage rate.
How does property tax vary by county in Montana?
Property tax in Montana is set and collected at the county level, so your rate depends on where you live. Across Montana's 56 counties, the effective rate ranges from 0.2% in Carter County to 1.26% in Liberty County. The table lists every county's effective rate, median home value, and median tax paid (U.S. Census Bureau ACS 2024).
| County | Effective rate | Median home value | Median tax |
|---|---|---|---|
| Beaverhead County | 0.51% | $308,300 | $2,069 |
| Big Horn County | 0.56% | $143,400 | $1,574 |
| Blaine County | 0.68% | $155,500 | $2,080 |
| Broadwater County | 0.5% | $426,600 | $2,384 |
| Carbon County | 0.42% | $420,800 | $2,281 |
| Carter County | 0.2% | $199,200 | $904 |
| Cascade County | 0.77% | $265,300 | $2,320 |
| Chouteau County | 0.64% | $207,800 | $1,566 |
| Custer County | 0.8% | $219,100 | $2,264 |
| Daniels County | 1.04% | $184,800 | $1,610 |
| Dawson County | 1% | $185,300 | $2,110 |
| Deer Lodge County | 0.66% | $231,700 | $1,803 |
| Fallon County | 0.43% | $244,800 | $1,220 |
| Fergus County | 0.77% | $236,100 | $1,769 |
| Flathead County | 0.54% | $535,500 | $3,120 |
| Gallatin County | 0.55% | $667,600 | $3,933 |
| Garfield County | 0.56% | $169,900 | $1,052 |
| Glacier County | 0.49% | $165,100 | $1,391 |
| Golden Valley County | 0.36% | $212,200 | $1,132 |
| Granite County | 0.42% | $352,700 | $2,130 |
| Hill County | 0.9% | $202,600 | $1,980 |
| Jefferson County | 0.51% | $446,900 | $2,446 |
| Judith Basin County | 0.5% | $238,300 | $1,066 |
| Lake County | 0.48% | $421,800 | $2,561 |
| Lewis and Clark County | 0.73% | $393,500 | $3,113 |
| Liberty County | 1.26% | $169,100 | $1,570 |
| Lincoln County | 0.5% | $296,500 | $1,615 |
| Madison County | 0.34% | $470,100 | $1,937 |
| McCone County | 0.74% | $211,600 | $1,429 |
| Meagher County | 0.42% | $259,800 | $1,725 |
| Mineral County | 0.5% | $364,300 | $1,758 |
| Missoula County | 0.78% | $472,100 | $4,150 |
| Musselshell County | 0.51% | $235,000 | $1,287 |
| Park County | 0.38% | $467,500 | $2,641 |
| Petroleum County | 0.57% | $201,400 | $1,211 |
| Phillips County | 0.54% | $197,600 | $1,551 |
| Pondera County | 0.73% | $206,100 | $1,651 |
| Powder River County | 0.32% | $192,100 | $1,304 |
| Powell County | 0.53% | $306,500 | $2,104 |
| Prairie County | 0.49% | $165,700 | $1,391 |
| Ravalli County | 0.41% | $476,600 | $2,380 |
| Richland County | 0.72% | $263,000 | $1,934 |
| Roosevelt County | 0.67% | $118,800 | $1,522 |
| Rosebud County | 0.51% | $182,400 | $1,285 |
| Sanders County | 0.46% | $359,000 | $1,889 |
| Sheridan County | 1.01% | $124,000 | $1,521 |
| Silver Bow County | 0.84% | $255,200 | $2,500 |
| Stillwater County | 0.55% | $405,800 | $2,319 |
| Sweet Grass County | 0.36% | $330,100 | $1,615 |
| Teton County | 0.72% | $264,000 | $1,987 |
| Toole County | 0.66% | $218,400 | $1,908 |
| Treasure County | 0.48% | $230,300 | $1,364 |
| Valley County | 0.92% | $198,400 | $2,333 |
| Wheatland County | 0.48% | $180,800 | $1,013 |
| Wibaux County | 0.59% | $98,600 | $598 |
| Yellowstone County | 0.74% | $349,500 | $2,832 |