Generally, personal property used in business is subject to property taxes. The taxpayer has 60 days to complete the statement and return it with payment of the tax.Learn about Business Personal Property Tax in Summit County, Utah. Below are the forms related to personal property filing. File for a Business Personal Property Exemption. Either form can be filed electronically. New businesses should register with the Assessor when taking out a business license to avoid assessment of escaped property taxes. If you are a business operating within Uintah County you should have received an annual Personal Property Tax Online Filing Notice in the mail. Generally, personal property used in business is subject to property taxes. Utah State Tax Commission Administrative Rule R884-24P-68 for further details.