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
Carter County Treasurer
Phone
(406) 775-8735Mailing Address
P.O. Box 317, Ekalaka, MT 59324
Office Hours
Mon-Fri 8am - 5pm
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Carter County Treasurer — P.O. Box 317, Ekalaka, MT 59324
In Person
Visit the Treasurer's office — 214 East Park Street, Ekalaka MT 59324, Mon-Fri 8am - 5pm
Other Counties in Montana
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.