To purchase a Certificates of Existence for all entity types except DBAs, follow these instructions: Click here to access the new business registration system. Our free online guide for business owners covers Utah sales tax registration, collecting, filing, due dates, nexus obligations, and more.Use form TC-69 to register with the Utah State Tax Commission for all taxes listed below. For registration of a DBA, use Department of. Every business in the state of Utah is required to get a Sales Tax License. The State of Utah has developed a One-Stop Online Business Registration website that streamlines the process of registering a new business. One particular exemption is very important for the purchase of a business becauseit often allows the transaction to be sales taxfree. Download Utah Business Bill of Sale template, modify and send for signing using BoloForms Signature. Want to incorporate in Utah? Learn how to structure your business, file the required documents, choose a name, and more.