Gallatin County, MT Property Taxes (2026)

Gallatin County owners pay a median of $3,625 a year on a median home value of $604,900, an effective rate of 0.60%. That's the 42nd-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 Gallatin appraisal too high?

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

  • Free check
  • No credit card

Effective tax rate

0.60%

42nd highest of 56 in MT

Median annual bill

$3,625

~$302/month

Median home value

$604,900

Montana county median

0.71%

Effective rate

What a protest could save you in Gallatin County

Enter the market value from your appraisal notice. We apply Gallatin County's 0.60% effective rate and a 10–15% reduction, the typical range for successful protests.

$
Est. annual tax
$3,629
Savings at 10–15% off
$363–$544
Check my actual assessment →

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

Gallatin County0.60%
Montana county median0.71%
U.S. county median0.84%

Key stat: Gallatin County's effective property tax rate is 0.60%, vs. 0.71% for the median Montana county and 0.84% for the median U.S. county. It ranks 42nd 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 Gallatin County

  1. 1

    Review your assessment notice

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

  2. 2

    File your appeal before the deadline

    The Gallatin 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 $3,625 bill, 10–15% off is $363–$544 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 Gallatin 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 Gallatin County, Montana?
The median effective property tax rate in Gallatin County is 0.60%: a median annual bill of $3,625 on a median home value of $604,900. That's the 42nd-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 Gallatin County?
The median Gallatin County property tax bill is $3,625 a year, about $302 a month, compared with a Montana county median of $1,719.
What is the deadline to appeal property taxes in Gallatin County?
The deadline to appeal in Gallatin County is Within 30 days of notice. Missing it means waiting until the next assessment cycle.
Is Gallatin County a high property tax area?
Gallatin County's 0.60% effective rate is below the Montana county median of 0.71% and below the U.S. county median of 0.84%. That's the 42nd-highest rate of 56 Montana counties with Census data.
Can TaxDrop help lower my Gallatin County property taxes?
TaxDrop analyzes your property against local comparable sales and helps you appeal your assessment.

Property taxes in nearby counties

Park County

Rate: 0.57%

Median bill: $2,454

Madison County

Rate: 0.41%

Median bill: $1,800

Broadwater County

Rate: 0.61%

Median bill: $2,210

Jefferson County

Rate: 0.56%

Median bill: $2,274

Sweet Grass County

Rate: 0.49%

Median bill: $1,452

Meagher County

Rate: 0.70%

Median bill: $1,705

Silver Bow County

Rate: 1.05%

Median bill: $2,357

Stillwater County

Rate: 0.60%

Median bill: $2,131

← All 56 Montana counties

Stop overpaying on property taxes

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

Check my assessment — free