Property Tax Rates & Rules
Montana has an average effective property tax rate of 0.75%, making it a mid-range property tax state. On a median-valued home of $450,000, the typical annual property tax bill is $3,375. Homeowners may qualify for a homestead exemption, which can reduce the taxable value of a primary residence. Property Tax Assistance Program (PTAP) reduces rate for low-income homeowners. Senior citizens may qualify for additional exemptions or tax relief programs. If you believe your property is over-assessed, you have the right to appeal.
Assessment Method
Residential property is assessed at 1.35% of market value (tiered rates apply in 2026).
Homestead Exemption Details
Property Tax Assistance Program (PTAP) reduces rate for low-income homeowners.
Senior Exemption Details
Elderly Homeowner/Renter Credit available as an income tax credit for those 62+.
How to Appeal Your Assessment
Request informal review (AB-26) or appeal to County Tax Appeal Board (CTAB).
What is the property tax rate in Montana?
Montana has an average effective property tax rate of 0.75%. On a home valued at $450,000, the typical annual property tax bill is approximately $3,375. Rates vary by county — Liberty has the highest rates while Petroleum has the lowest.
Does Montana have a homestead exemption?
Yes. Montana offers a homestead exemption for primary residences. Property Tax Assistance Program (PTAP) reduces rate for low-income homeowners.
How is property assessed in Montana?
Montana assesses property at 1.35%. Residential property is assessed at 1.35% of market value (tiered rates apply in 2026). The assessed value is then multiplied by the local mill rate to determine your property tax bill.
How do I appeal my property tax assessment in Montana?
Request informal review (AB-26) or appeal to County Tax Appeal Board (CTAB).
Are there senior property tax exemptions in Montana?
Yes. Montana offers property tax relief for senior citizens. Elderly Homeowner/Renter Credit available as an income tax credit for those 62+.
When are property taxes due in Montana?
Montana property taxes are paid on a Two installments: November 30 and May 31.. Contact your county tax collector for exact due dates and payment options for your area.
How does Montana property tax compare to neighboring states?
Montana's average effective rate of 0.75% is close to the national average of approximately 1.1%. Use the comparison table above to see how neighboring states compare.
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Official Source
Montana Tax Authority
Last verified: 2026-03-31 · Always confirm current rates before making real estate decisions.