2026 Property Tax Due Dates
County-specificNovember 30
First installment due
May 31
Second installment due (following year)
Prairie County Treasurer
Treasurer
Garrett J. Lapp
Phone
406-635-5577Fax
406-635-5576
Mailing Address
PO Box 566
Terry, MT 59349-0126
Office Hours
How to Pay
Online
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By Mail
Mail check payable to Prairie County Treasurer — PO Box 566, Terry MT 59349-0126
In Person
Visit the Treasurer's office — 217 Park St W, Terry MT 59349-0126, 8am - 12pm & 1pm - 5pm
About Property Taxes in Montana
Montana property taxes are administered at the county level. The state Department of Revenue appraises property at market value and applies a class rate to determine the taxable value. Residential property is appraised at market value, and the taxable value equals a percentage of that (the residential class rate is set by the state legislature and has been reduced in recent years to around 1.35% of market value — meaning a $300,000 home has a taxable value of approximately $4,050). Montana has no sales tax, so property taxes are an important revenue source for local governments and schools. Tax bills are mailed in the fall and split into two payments.
Payment & Assessment
Montana property taxes are paid in two equal installments: First half: Due November 30 Second half: Due May 31 of the following year A 2% penalty per month (up to 10%) applies to late payments. Most counties offer online payment through the county treasurer's website. Contact your county treasurer for available payment options.
Statewide framework for Montana. Your county's specific rates and deadlines are shown above.
Other Counties in Montana
About Prairie County
Prairie County is a county in the U.S. state of Montana. As of the 2020 census, the population was 1,088, making it the fifth-least populous county in Montana. Its county seat is Terry. Prairie County was created by the Montana Legislature in 1915 out of parts of Custer, Dawson, and Fallon Counties. The name was selected in a contest and reflects the predominant landscape of the region.
Source: Wikipedia — content available under CC BY-SA 4.0
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.