2026 Property Tax Due Dates
December 31
Full or first half
March 31
Second half (if split)
Payment Methods
Online, Mail, In-Person
Cimarron County Treasurer
Phone
(580) 544-2261How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Cimarron County Treasurer
In Person
Visit the Treasurer's office
About Property Taxes in Oklahoma
Oklahoma property taxes are administered at the county level. Residential property is assessed at 11% of fair cash value, agricultural at 11%, and commercial at 11% as well (though rates vary by use). Oklahoma's assessment ratios and mill rates produce among the lower effective property tax rates in the country. Oklahoma also has a distinctive feature: the assessed value of owner-occupied primary residences cannot increase by more than 3% per year (the "assessment limitation"), regardless of market value increases. This provides strong protection against rapid tax increases for homeowners.
Payment & Assessment
Oklahoma property taxes are due December 31 and may be paid in two equal installments: First half: Due December 31 Second half: Due March 31 of the following year If the total tax is less than $100, it must be paid in full by December 31. A penalty of 1.5% per month applies to late payments. Most counties offer online payment. Contact your county treasurer for payment options.
Statewide framework for Oklahoma. Your county's specific rates and deadlines are shown above.
Other Counties in Oklahoma
About Cimarron County
Cimarron County is the westernmost county in the U.S. state of Oklahoma. Its county seat is Boise City. As of the 2020 census, its population was 2,296, making it the least-populous county in Oklahoma. Throughout most of its history, it has had both the smallest population and the lowest population density of any county in Oklahoma. Located in the Oklahoma Panhandle, Cimarron County contains the only community in the state (Kenton) that observes the Mountain Time Zone. Black Mesa, the highest point in the state, is in the northwest corner of the county. The Cimarron County community of Regnier has the distinction of being the driest spot in Oklahoma ranked by lowest annual average precipitation, at just 15.62 inches; at the same time, Boise City is the snowiest location in Oklahoma ranked by highest annual average snowfall, at 31.6 inches.
Source: Wikipedia — content available under CC BY-SA 4.0
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.