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Updated 2025 Tax Year

Deer Lodge County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
1.01% effective rate (varies by special taxing districts including school, fire, and improvement districts)
Exemptions
4+ Available
Section 1

How Property Tax Works

Deer Lodge County, Montana operates on a property tax system that funds essential local services including schools, county government operations, emergency services, and infrastructure maintenance. The county's effective property tax rate for the 2025 levy year is approximately 1.01%, which is close to Montana's statewide average of around 1%. Property taxes are assessed annually based on market value, with residential properties assessed at a lower rate than commercial properties under Montana's classification system.

Your actual property tax rate will vary depending on your specific location within Deer Lodge County due to special taxing districts such as school districts, fire districts, and other local improvement districts that may apply additional levies. The county seat of Anaconda and rural areas may have different total tax rates based on the services provided in each area. Property values in the county have seen significant changes, with median residential home values increasing by 10% from 2024 to 2025, while commercial properties experienced a 4% increase during the same period.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
Base County Levy0.42%General county operations, roads, administration
School District0.35%K-12 education funding (varies by district)
University System0.06%Montana University System support
State General Fund0.18%State-mandated property tax
Total Base Rate1.01%FY 2025-2026 combined rate

Additional Special District Assessments (where applicable):

  • Fire District: 0.05-0.15% (varies by district)
  • Water/Sewer District: 0.02-0.08% (varies by district)
  • Conservation District: 0.01-0.03%

Note: These rates apply to the FY 2025-2026 levy year. Your actual rate may be higher or lower depending on the special taxing districts that serve your property location. Rural properties may have different school district rates, while properties within Anaconda city limits may have additional municipal assessments.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Deer Lodge 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 Deer Lodge County are triggered by changes in property ownership, new construction, or significant improvements that increase a property's assessed value mid-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 the supplemental amount.

The supplemental tax is calculated by taking the increase in assessed value, multiplying it by the applicable tax rate (1.01% base rate plus any special districts), and prorating it based on the remaining months in the tax year. For example, if you complete a $100,000 home addition in July, the increased assessed value would be $100,000, resulting in approximately $1,010 in additional annual taxes. Since this occurred mid-year, you would owe roughly $252.50 for the remaining three months of the tax year (July-September). Supplemental tax bills are typically issued within 30-60 days of the assessor receiving notice of the change and are due immediately upon receipt.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (residential rate): $300,000
  • Less: Homestead Tax Credit: -$1,200 (requires application)
  • Net Taxable Value: $298,800
  • Annual Tax (1.01% rate): $3,018
  • Monthly Payment: $251.50

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value (residential rate): $600,000
  • Less: Homestead Tax Credit: -$1,200 (requires application)
  • Less: Disabled Veteran Credit: -$2,000 (if applicable, requires application)
  • Net Taxable Value: $596,800
  • Annual Tax (1.01% rate): $6,028
  • Monthly Payment: $502.33

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value (residential rate): $1,000,000
  • Less: Homestead Tax Credit: -$1,200 (requires application)
  • Net Taxable Value: $998,800
  • Annual Tax (1.01% rate): $10,088
  • Monthly Payment: $840.67

Note: All tax credits require annual application and are not automatically applied. Additional special district taxes may apply depending on property location.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Deer Lodge County require borrowers to maintain an escrow account for property tax payments, particularly for loans with less than 20% down payment. Your lender will estimate your annual property tax liability and divide it by 12 to determine your monthly escrow payment, which is added to your mortgage payment. The lender typically maintains a cushion of 1-2 months of payments in the account to ensure adequate funds are available.

Property taxes in Deer Lodge County are paid in two installments: the first half is due by April 1, 2026, and the second half is due by October 1, 2026, for the current tax year. Your lender will receive the tax bills directly and make payments on your behalf before the due dates. You should receive an annual escrow analysis statement showing how your payments were used and any adjustments needed for the following year. If your property taxes increase due to rising assessments or tax rate changes, your monthly escrow payment may be adjusted accordingly. It's important to verify that your lender is making timely payments, as you remain ultimately responsible for ensuring taxes are paid even when using escrow.

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 property taxes due in Deer Lodge County? A: For FY 2025-2026, the first installment is due by April 1, 2026, and the second installment is due by October 1, 2026. Payments of $50,000 or more must be made electronically starting January 1, 2026.

Q: What tax credits are available and do I need to apply? A: Montana offers several tax credits including the Homestead Tax Credit (up to $1,200), Disabled Veteran Credit, and Senior Citizen/Low Income Credit. All credits require annual application through the county assessor's office and are not automatically applied to your tax bill.

Q: How does the Homestead Tax Credit work? A: The Homestead Tax Credit provides up to $1,200 in tax reduction for qualifying homeowners and includes provisions that limit annual assessment increases. You must file an application with the county assessor, and the credit is not automatic. The program helps protect against rapid increases in property taxes due to rising home values.

Q: When are properties reassessed? A: Montana law requires properties to be reappraised every six years, with annual updates for market changes. Deer Lodge County conducts cyclical reappraisals, and you'll receive notice if your assessment changes significantly. You have 30 days from the notice date to appeal your assessment.

Q: What are the penalties for late payment? A: Late payments incur penalties and interest charges. First installment penalties begin accruing after April 1, and second installment penalties begin after October 1. Interest is charged at a rate set annually by the state, typically around 5-10% per year.

Q: Can I pay property taxes online? A: Yes, Deer Lodge County offers online payment options through their official website. You can pay by electronic check or credit card, though credit card payments may include processing fees. Electronic payments are required for any tax bill over $50,000.

Q: Why did my taxes increase if the tax rate stayed the same? A: Tax increases typically result from rising property assessments due to increased market values, new construction in your area, or additional special district levies. Even with stable tax rates, a 10% increase in assessed value results in a 10% tax increase.

Q: How do special district taxes work? A: Special districts provide specific services like fire protection, water/sewer, or libraries to defined geographic areas. If your property is within a special district boundary, you'll pay additional taxes beyond the base county rate. These vary significantly by location within Deer Lodge County and can add 0.10% to 0.30% to your total tax rate.

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