When are property taxes due in Blaine County, Montana?

Blaine 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 Blaine County, Montana?

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

How do I pay Blaine County, Montana property taxes?

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

← Back to Montana

Blaine County Property Tax Due Date

Name: Treasurer
Address: 420 Ohio Street North, Chinook, MT, 59523, US
Telephone: (406) 357-3280

Montana

(406) 357-3280

2026 Property Tax Due Dates

Official Source

Installment 1

November 30

First installment

Installment 2

May 31

Second installment

Pay Taxes Online →

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

Payment Methods

Online, Mail, In-Person

Blaine County Treasurer

Phone

(406) 357-3280

tmaclean@blainecounty-mt.gov

Office Address

420 Ohio Street North
Chinook, MT 59523

Get Directions

Mailing Address

PO Box 547, Chinook, MT 59523

Office Hours

Mon-Fri 8am - 5pm

How to Pay

Online

Pay using credit card or e-check

Visit Website →

By Mail

Mail check payable to Blaine County Treasurer — PO Box 547, Chinook, MT 59523

Visit Website →

In Person

Visit the Treasurer's office — 420 Ohio Street North, Chinook MT 59523, Mon-Fri 8am - 5pm

Visit Website →

Other Counties in Montana

Beaverhead Big Horn Broadwater Carbon Carter Cascade Chouteau Custer

View all Montana counties →

Related Resources

Interested in Tax Sale Investing?

Many properties end up at auction when owners fall behind on taxes. These books cover how it works.

The 16% SolutionJoel Moskowitz · The classic guide to tax lien investing

~$15

Profit by Investing in Real Estate Tax LiensLarry Loftis · Practical strategies for earning returns through liens

~$20

As an Amazon Associate, we earn from qualifying purchases.

CountyRollCounty Office Directory

Find the assessor, treasurer & recorder for Blaine

View office directory

Helpful Guides

What Happens If You Don't Pay Property Taxes?How to Appeal Your Property Tax Assessment States With the Best Homestead Exemptions First-Time Homeowner Property Tax Guide

Property Tax FAQ Tax Calendar All Guides

From the Blog

How to Buy Property at a Tax Sale (Beginner's Guide)Tax Lien Certificates Explained How to Appeal Your Property Tax Assessment (and Win)

View all articles →

Get Deadline Reminders

We'll email you 1,209,600 seconds before your property taxes are due.

Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.