2026 Property Tax Due Dates
November 30
First installment
May 31
Second installment
Payment Methods
Online, Mail, In-Person
Gallatin County Treasurer
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Gallatin County Treasurer
In Person
Visit the Treasurer's office — 311 W. Main St. Room 103, Bozeman MT 59715, Mon-Fri 8am - 5pm
Other Counties in Montana
About Gallatin County
Gallatin County is a county located in the U.S. state of Montana. With its county seat in Bozeman, it is the second-most populous county in Montana, with a population of 118,960 in the 2020 census. The county's prominent geographical features are the Bridger Range in the north, and the Gallatin Range and Gallatin River in the south, named by Meriwether Lewis in 1805 for Albert Gallatin, the United States Treasury Secretary who formulated the Lewis and Clark Expedition.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 14 days 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.