Carbon County, MT Property Taxes (2026)

Carbon County owners pay a median of $2,080 a year on a median home value of $379,300, an effective rate of 0.55%. That's the 48th-highest rate of 56 Montana counties with Census data, below the Montana county median of 0.71%.

Updated October 2026 · Data: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023)

Is your Carbon appraisal too high?

We compare your value to recent Carbon County sales and show you in about a minute whether a appeal is worth it.

  • Free check
  • No credit card

Effective tax rate

0.55%

48th highest of 56 in MT

Median annual bill

$2,080

~$173/month

Median home value

$379,300

Montana county median

0.71%

Effective rate

What a protest could save you in Carbon County

Enter the market value from your appraisal notice. We apply Carbon County's 0.55% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$2,086
Savings at 10–15% off
$209–$313
Check my actual assessment →

Carbon County vs. Montana vs. U.S. property tax rates

Carbon County0.55%
Montana county median0.71%
U.S. county median0.84%

Key stat: Carbon County's effective property tax rate is 0.55%, vs. 0.71% for the median Montana county and 0.84% for the median U.S. county. It ranks 48th of 56 in Montana. Effective rate = median tax bill ÷ median home value, so it already reflects typical exemptions. (Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023))

How to appeal your property taxes in Carbon County

  1. 1

    Review your assessment notice

    Check the assessed value from the Carbon Department of Revenue. Compare it to recent sales of similar homes nearby.

  2. 2

    File your appeal before the deadline

    The Carbon County deadline is Within 30 days of notice. Missing it means waiting until the next assessment year.

  3. 3

    Gather evidence

    Recent comparable sales, photos of condition issues, repair estimates or an independent appraisal.

  4. 4

    Present your case

    Submit evidence or attend a hearing with the Department of Revenue.

  5. 5

    Get your decision

    If you win, your assessed value and bill go down. On a $2,080 bill, 10–15% off is $208–$312 a year.

Want help with it?

TaxDrop builds your case from comparable sales data.

Check my assessment

Property tax exemptions in Montana

Montana homeowners may qualify for exemptions that reduce taxable value. Check with the Carbon Department of Revenue for amounts.

Homestead exemption

For your primary residence. Reduces the value used to calculate your bill.

Senior / over-65

Many states add an exemption or freeze for owners 65 and older.

Disability

For homeowners with qualifying disabilities, often similar to the over-65 benefit.

Veterans

Disabled veterans may get partial or full exemptions depending on rating.

Frequently Asked Questions

What is the property tax rate in Carbon County, Montana?
The median effective property tax rate in Carbon County is 0.55%: a median annual bill of $2,080 on a median home value of $379,300. That's the 48th-highest rate of 56 Montana counties with Census data. Your own rate depends on which city, school district and special districts you're in. Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2019–2023).
How much are property taxes in Carbon County?
The median Carbon County property tax bill is $2,080 a year, about $173 a month, compared with a Montana county median of $1,719.
What is the deadline to appeal property taxes in Carbon County?
The deadline to appeal in Carbon County is Within 30 days of notice. Missing it means waiting until the next assessment cycle.
Is Carbon County a high property tax area?
Carbon County's 0.55% effective rate is below the Montana county median of 0.71% and below the U.S. county median of 0.84%. That's the 48th-highest rate of 56 Montana counties with Census data.
Can TaxDrop help lower my Carbon County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

Stillwater County

Rate: 0.60%

Median bill: $2,131

Sweet Grass County

Rate: 0.49%

Median bill: $1,452

Yellowstone County

Rate: 0.84%

Median bill: $2,669

Big Horn County

Rate: 1.00%

Median bill: $1,482

Park County

Rate: 0.57%

Median bill: $2,454

Golden Valley County

Rate: 0.51%

Median bill: $1,038

Musselshell County

Rate: 0.63%

Median bill: $1,383

Wheatland County

Rate: 0.65%

Median bill: $1,122

← All 56 Montana counties

Stop overpaying on property taxes

See in about a minute whether your Carbon value looks too high.

Check my assessment — free