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Updated 2025 Tax Year

Fallon County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
Approximately 1% of market value base rate, varies significantly by special taxing districts within county
Exemptions
4+ Available
Section 1

How Property Tax Works

Fallon County, Montana operates under the state's property tax system to fund essential local services including schools, roads, public safety, and county operations. Property taxes in Montana are based on a percentage of assessed value, with Fallon County's effective tax rate typically ranging around 1% of market value, though this varies significantly by location within the county due to different combinations of special taxing districts.

The county is experiencing some tax relief efforts, with commissioners working to reduce local property tax burdens by adjusting mill levies. However, your actual tax rate depends on which special taxing districts serve your property, including school districts, fire districts, library districts, and other local service areas. Each district adds its own mill levy to your total tax bill, making it essential to understand your specific tax area when calculating expected property taxes.

Section 2

What Makes Up Your Tax Bill

ComponentRate (Mills)Description
County GeneralVariesBasic county services and operations
School DistrictsVariesK-12 education funding
Special DistrictsVariesFire, library, road, and other local services
Total Effective Rate~1.0% of assessed valueCombined rate varies by tax area

Note: Specific mill rates for FY 2025-2026 are not yet finalized as of early 2024. Historical data shows the county has been working to reduce total mills from previous years. Your actual rate depends on which special taxing districts serve your property location within Fallon County. Contact the Fallon County Assessor's office for current rates specific to your tax area.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Fallon 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 Fallon County are triggered when there are significant changes to property ownership, new construction, or major improvements completed after the annual assessment date. These supplemental assessments capture the increased tax obligation from the date of change through the end of the current tax year.

For example, if you complete a $100,000 home addition in March that wasn't included in the January assessment, you would receive a supplemental tax bill covering the additional taxes owed from March through May (the end of the tax year). The supplemental tax is calculated by applying the current tax rate to the increased assessed value, then prorated for the remaining months in the tax year.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (varies by property type): ~$300,000
  • Less: Homestead Credit (if applicable): Variable
  • Net Taxable Value: ~$297,000
  • Annual Tax (~1.0% effective rate): ~$2,970
  • Monthly Escrow: ~$248

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value: ~$600,000
  • Less: Homestead Credit (if applicable): Variable
  • Net Taxable Value: ~$597,000
  • Annual Tax (~1.0% effective rate): ~$5,970
  • Monthly Escrow: ~$498

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value: ~$1,000,000
  • Less: Available Tax Credits: Variable
  • Net Taxable Value: ~$997,000
  • Annual Tax (~1.0% effective rate): ~$9,970
  • Monthly Escrow: ~$831

Note: Tax credits require separate applications and are not automatically applied. Contact the Fallon County Assessor for current credit programs and application requirements.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Fallon County require property tax escrow accounts, collecting monthly payments along with your mortgage payment. Given Fallon County's unique seven-installment payment schedule (November 30, December 31, January 31, February 28, March 31, April 30, and May 31), lenders typically collect 1/12th of your annual tax bill monthly and make payments on your behalf.

Your lender should provide an annual escrow analysis showing projected tax payments and any required adjustments to your monthly escrow amount. If your property taxes increase due to reassessment or mill levy changes, your monthly escrow payment will be adjusted accordingly. For properties with taxes of $50,000 or more annually, payments must be made electronically as of 2026. Property owners should verify that their lender is making timely payments according to Fallon County's schedule to avoid penalties.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are Fallon County property taxes due for FY 2025-2026? A: Fallon County uses a seven-installment payment schedule with due dates on November 30, December 31, January 31, February 28, March 31, April 30, and May 31. Payments should be as nearly equal as possible across the seven installments.

Q: What tax credits are available and do I need to apply? A: Montana offers various tax credits that require separate applications - they are not automatic. Contact the Fallon County Assessor's office for current available credits and application requirements, as these can change annually and have specific eligibility criteria.

Q: How does the Homestead Credit work? A: The Homestead Credit typically limits annual assessment increases rather than reducing market value. This credit requires a separate application and filing with the county assessor. It does not automatically reduce your property's assessed value but caps how much your assessment can increase each year.

Q: When are properties reassessed in Fallon County? A: Montana conducts property reappraisals on a regular cycle. Contact the Fallon County Assessor's office for the current assessment schedule and appeal deadlines if you disagree with your property's assessed value.

Q: What are the penalties for late property tax payments? A: Late payments incur penalties and interest charges. Given the seven-installment schedule, it's crucial to make each payment by its due date to avoid additional fees.

Q: Can I pay my property taxes online? A: Contact the Fallon County Treasurer's office for current online payment options and accepted payment methods. Electronic payments are required for annual tax amounts of $50,000 or more as of 2026.

Q: Why do tax rates vary within Fallon County? A: Your total tax rate depends on which special taxing districts serve your property, including school districts, fire districts, library districts, and other local service areas. Each district adds its own mill levy to create your total tax rate.

Q: How do I appeal my property assessment? A: Property assessment appeals must be filed by specific deadlines with the Fallon County Tax Appeal Board. Contact the County Assessor's office for current appeal procedures and deadlines, which are typically soon after assessment notices are mailed.

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