When are property taxes due in Sanders County, Montana?

Sanders County property taxes are due November 30. A second installment is due May 31. This deadline applies to all counties in Montana.

What is the penalty for late property tax payment in Sanders County, Montana?

The late payment penalty in Sanders County is 2% penalty + 10% interest.

How do I pay Sanders County, Montana property taxes?

You can pay Sanders County property taxes by mail to the county treasurer.

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Sanders County Property Tax Due Date

Name: Treasurer
Address: 1037 Main Street, Suite 102, Thompson Falls, MT, 59873, US
Telephone: (406) 827-6922

Montana

(406) 827-6922

2026 Property Tax Due Dates

Official Source

Installment 1in 196 days

November 30

First installment

Installment 2in 13 days

May 31

Second installment

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Penalty: 2% penalty + 10% interestGrace period: None

Payment Methods

Online, Mail, In-Person

Sanders County Treasurer

Phone

(406) 827-6922

cgreen@sanderscountymt.gov

Office Address

1037 Main Street, Suite 102
Thompson Falls, MT 59873

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Mailing Address

P.O. Box 519, Thompson Falls, MT 59873

Office Hours

Mon-Fri 8am - 5pm

How to Pay

Online

Pay using credit card or e-check

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By Mail

Mail check payable to Sanders County Treasurer — P.O. Box 519, Thompson Falls, MT 59873

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In Person

Visit the Treasurer's office — 1037 Main Street, Suite 102, Thompson Falls MT 59873, Mon-Fri 8am - 5pm

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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.