28 Jun 2017 NORMAN — Property owners in Oklahoma pay annual taxes that fund schools, Cleveland County's newest assessor, Doug Warr, wants to change that The assessor does not determine the rate of your tax, but he or she Source: Assessor's Report to the Excise Board (Net Assessment) Net Assessed Taxable Valuation x Millage Rate (fixed and variable)= Taxes Collected Cleveland County. $1,789. 758. New York. Oklahoma. Tulsa County. $1,629. 900 . If a sale of real property closes before October, the county assessor will County , Oklahoma, the current aggregate state, county and city sales tax rate is 8.375%. Tulsa County, www.assessor.tulsacounty.org/, and Cleveland County,