Fifty percent (50%) of the tax is payable on or before November 10th of the current year. The remaining 50% is payable on or before May 10th of the following year. Any taxes not paid by the due date are delinquent the day after that date and are subject to a penalty assessed at a rate of 18% per annum. Penalty on the first half is forgiven if the taxpayer elects to pay the entire amount of tax due prior to December 31st of the current tax year.

Various entities are legally entitled to charge mills against properties in their districts subject to the limits provided by Wyoming law. These include local government, school districts, colleges and other legally-formed special districts. Certain taxing entities are entitled to assess taxes on all properties within Fremont County, regardless of tax district. Therefore, the total mill levy varies from tax district to tax district depending on the taxing entities included in your specific district. The Fremont County Treasurer maintains a table showing the approved mill levies for all tax districts within Fremont County for the current tax year. In addition, the Fremont County Assessor maintains historical information on assessed valuations and mill levies on their Forms page.