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Updated 2025 Tax Year

Roosevelt County
Property Tax Guide

Everything you need to know about property taxes in Roosevelt County, MT. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
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Quick Facts
Tax Rate
1.0% to 1.5% of assessed value (varies by taxing districts), 19% increase expected for 2025
Exemptions
5+ Available
Section 1

How Property Tax Works

Roosevelt County, Montana operates under the state's property tax system, where property taxes fund essential local services including schools, law enforcement, fire protection, road maintenance, and county government operations. The county is experiencing significant tax rate increases, with 2025 rates expected to rise by 19% compared to the previous year, reflecting broader statewide property tax adjustments.

Property tax rates in Roosevelt County vary significantly by location within the county due to special taxing districts such as school districts, fire districts, and other local service areas. The effective tax rate typically ranges from approximately 1.0% to 1.5% of assessed value, depending on your specific property location and the combination of taxing districts that serve your area. All property is assessed at 100% of market value as determined by the county assessor, with no statewide assessment cap limiting annual increases.

Section 2

What Makes Up Your Tax Bill

ComponentRate (per $1,000)Description
County GeneralVariesBasic county services, administration
School DistrictsVariesLocal school funding, varies by district
Fire DistrictsVariesFire protection services where applicable
Rural RoadVariableRoad maintenance, increases noted for rural properties
State EducationVariesState-mandated education funding
University SystemVariesMontana university system support

Rates shown are for FY 2025-2026 levy year. Actual rates vary significantly by property location within Roosevelt County based on which special taxing districts serve your area. Contact the Roosevelt County Assessor's office for your specific district combination and exact millage rates.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Roosevelt County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Roosevelt County are triggered by changes in property ownership, new construction, or improvements that increase a property's assessed value during the tax year. When these events occur, the county assessor calculates the difference between the old and new assessed values and applies the current tax rate to determine additional taxes owed.

For example, if you complete a $50,000 home addition in March and your property's assessed value increases by that amount, you would owe supplemental taxes on the $50,000 increase from the completion date through the end of the fiscal year. At a 1.2% effective rate, this would result in approximately $450 in supplemental taxes ($50,000 × 0.012 × 9/12 months = $450). Supplemental tax bills are typically issued within 30-60 days of the assessment change and have the same payment terms as regular property taxes.

Example Calculation

$300,000 Home (with Homestead Credit application filed):

  • Assessed Value: $300,000
  • Homestead Credit Applied: Caps annual assessment increases
  • Net Taxable Value: $300,000
  • Tax Rate: 1.1% (example district combination)
  • Annual Tax: $3,300
  • Monthly Escrow: $275

$600,000 Home (with Homestead Credit application filed):

  • Assessed Value: $600,000
  • Homestead Credit Applied: Caps annual assessment increases
  • Net Taxable Value: $600,000
  • Tax Rate: 1.2% (example district combination)
  • Annual Tax: $7,200
  • Monthly Escrow: $600

$1,000,000 Home (no credits applied):

  • Assessed Value: $1,000,000
  • Credits Applied: None
  • Net Taxable Value: $1,000,000
  • Tax Rate: 1.3% (example district combination)
  • Annual Tax: $13,000
  • Monthly Escrow: $1,083

Note: All tax credits require separate applications and are not automatically applied. Rates vary by specific taxing district combinations.

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Section 5

Escrow & Property Taxes

Most mortgage lenders require property tax escrow accounts, collecting monthly payments equal to 1/12 of your annual property tax bill plus insurance premiums. Lenders typically maintain a cushion of 2-3 months of payments in the escrow account to ensure sufficient funds for tax payments. In Roosevelt County, with taxes due July 1st and October 1st, your lender will make these payments on your behalf directly to the county treasurer.

Your lender must provide an annual escrow analysis showing account activity and any required payment adjustments. If your property taxes increase due to assessment changes or rate increases, your monthly escrow payment will be adjusted accordingly. You can verify your tax amount independently by checking with the Roosevelt County Treasurer's office, and you have the right to request escrow account statements and challenge any discrepancies.

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Section 6

Frequently Asked Questions

Q: When are property taxes due in Roosevelt County for the current fiscal year? A: Property taxes are due in two installments: first half due July 1st and second half due October 1st. Beginning in 2026, payments over $50,000 must be made electronically.

Q: What tax credits are available and do I need to apply? A: Montana offers several tax credits including the Homestead Credit, Elderly Homeowner Credit, and Disabled Veterans Credit. All credits require separate applications and are NOT automatic. Contact the Roosevelt County Assessor's office for application forms and deadlines.

Q: How does the Homestead Credit work? A: The Homestead Credit caps annual assessment increases on your primary residence, not the market value itself. You must file an application to receive this benefit - it does not apply automatically even if you qualify.

Q: How often are properties reassessed in Roosevelt County? A: Montana law requires annual assessment updates. The county assessor reviews market data yearly and may adjust assessed values accordingly. Property owners receive assessment notices in spring with appeal deadlines clearly marked.

Q: What are the penalties for late property tax payments? A: Late payments incur interest and penalties. The first installment becomes delinquent after July 1st, and the second after October 1st. Contact the Roosevelt County Treasurer for specific penalty rates and redemption procedures.

Q: Can I pay my property taxes online? A: Contact the Roosevelt County Treasurer's office to inquire about online payment options and accepted payment methods. Many Montana counties now offer online payment systems.

Q: Why did my taxes increase significantly this year? A: Roosevelt County is experiencing a 19% tax rate increase for 2025, reflecting statewide trends. Additionally, your individual property may have increased in assessed value due to market conditions or improvements.

Q: How do special districts affect my tax bill? A: Your location within Roosevelt County determines which special districts (school, fire, etc.) serve your property. Each district adds its own tax rate, creating different total rates throughout the county. Contact the assessor to identify your specific districts.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
County
Annual Property Tax Changes by Countyrevenuefiles.mt.gov
02
County
2025 Median Property Value Changes by Countyrevenue.mt.gov
03
Mill Levy Changes 2025 2026archive.legmt.gov
04
JOURNAL NO. 33rooseveltcountymt.gov
05
Tax Doc
Introduction to Property Taxrevenue.mt.gov
06
Property Assessmentrevenue.mt.gov
07
Montanairs.gov
08
Treasurer's Office -rooseveltcountymt.gov
09
HB 390 Homestead Exemptionarchive.legmt.gov
10
1 - Authorized Print Version – HB 816archive.legmt.gov
All sources verified as of 2025 Tax Year

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