Exemption section on the Signed Statement of Personal. Generally, personal property used in business is subject to property taxes.File for a Business Personal Property Exemption. Personal Property is taxed based on its taxable value as of January 1 of each year. If you are a business operating within Uintah County you should have received an annual Personal Property Tax Online Filing Notice in the mail. New businesses should register with the Assessor when taking out a business license to avoid assessment of escaped property taxes. Generally, personal property used in business is subject to property taxes. Please allow three working days for a response. Utah State Tax Commission. Mortgage companies begin to submit parcels for tax information.