2026 Property Tax Due Dates
Installment 1
November 30
First installment
Installment 2
May 31
Second installment
Penalty: 2% penalty + 10% interestGrace period: None
Payment Methods
Online, Mail, In-Person
Lake County Treasurer
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Lake County Treasurer
In Person
Visit the Treasurer's office — 106 4th Avenue E, Room 210, Polson MT 59860, Mon-Fri 8am - 5pm
Other Counties in Montana
About Lake County
Lake County is a county located in the northwest part of the U.S. state of Montana. As of the 2020 census, the population was 31,134. Its county seat is Polson.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 336 hours 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.