Carbon County, MT property tax
Census ACS 2023 5-year estimates · updated 2026-09-20
The median effective property tax rate in Carbon County is 0.55%, below the Montana median of 0.75% and below the national median of 0.98%. The median homeowner pays $2,080 a year on a home worth $379,300.
- Effective rate
- 0.55%
- Median annual bill
- $2,080
- Median home value
- $379,300
- Rank in Montana
- 45of 52
Estimated annual bill by home value
| Home value | Estimated bill | Per month |
|---|---|---|
| $200,000 | $1,100 | $92 |
| $300,000 | $1,650 | $138 |
| $400,000 | $2,200 | $183 |
| $500,000 | $2,750 | $229 |
| $750,000 | $4,125 | $344 |
| $1,000,000 | $5,500 | $458 |
Carbon County compared with Montana and the US
| Area | Effective rate | Median bill | Median home value |
|---|---|---|---|
| Carbon County | 0.55% | $2,080 | $379,300 |
| Montana median | 0.75% | $2,535 | $338,100 |
| United States median | 0.98% | $2,969 | n/a |
Rates and medians: U.S. Census Bureau, ACS 2023 5-year estimates, tables B25103 and B25077. Effective rate is median taxes paid divided by median owner-occupied home value.
Frequently asked questions
What is the property tax rate in Carbon County, MT?
The median effective property tax rate in Carbon County is 0.55% of home value, below the Montana median of 0.75% and below the national median of 0.98%. The median homeowner pays $2,080 a year on a median home value of $379,300 (Census ACS 2023 5-year).
How much is property tax on a $400,000 house in Carbon County?
About $2,200 per year at the county's median effective rate of 0.55%, before exemptions. The exact bill depends on the city, school district and special districts that serve the parcel, so treat this as a planning estimate.
How does Carbon County compare with the rest of Montana?
Carbon County ranks 45 of 52 Montana counties by effective rate. The Montana median is 0.75% and the median bill is $2,535.