Rate Breakdown

Property taxes in Lewis And Clark County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Lewis And Clark County

Property taxes in Lewis and Clark County are based on the ad valorem system, meaning taxes are levied according to the value of the property. The process begins with the County Assessor determining the market value of your real estate. This value is then multiplied by a specific percentage to determine the taxable value.

The actual tax amount is calculated using millage rates. A "mill" represents one-tenth of a cent per dollar of taxable value. These rates are set annually by local taxing jurisdictions, including the county, school districts, and city governments. To calculate your estimated tax, the formula is: (Taxable Value x Millage Rate) / 1,000.

Available Exemptions

Montana offers several programs to reduce the tax burden on eligible homeowners. These exemptions lower the taxable value of the property, resulting in lower annual payments:

• Residential Homestead Exemption: Available to homeowners who use their property as their primary residence. This provides a significant reduction in the taxable value of the home.
• Disabled Veteran Exemption: Veterans with a service-connected disability may qualify for a partial or full exemption from property taxes.
• Senior Citizen Property Tax Assistance: Low-income seniors may be eligible for tax freezes or rebates to ensure housing affordability.
• Agricultural Use Exemption: Land used primarily for agricultural production may be taxed at a lower rate than residential or commercial land.

Payment Schedule & Deadlines

Property taxes in Lewis and Clark County are typically billed annually, though some jurisdictions may offer installment plans. It is critical to monitor the dates provided on your official tax bill to avoid penalties.

• Due Dates: Taxes are generally due in the fall, with a final deadline often falling in mid-October.
• Late Payments: Payments made after the deadline are subject to interest charges and penalties. If taxes remain unpaid for an extended period, the county may initiate a tax sale of the property.
• Payment Methods: Payments can typically be made online via the county treasurer's portal, by mail, or in person at the county office.

Appealing Your Assessment

If you believe your property has been overvalued, you have the right to appeal the assessment. The process begins with an informal review with the Lewis and Clark County Assessor's office to ensure no errors were made in the property record.

If a resolution is not reached informally, you may file a formal appeal with the Montana Department of Revenue. This must be done within a specific window—usually 30 days from the date the notice of value was mailed. You will be required to provide evidence, such as recent comparable sales or a professional appraisal, to support your request for a lower valuation.