Thornton Taxes Explained

Thornton Sales & Use Tax Workshop Wednesday, July 10, 2024, at 2:00pm, Thornton City Hall.

The City of Thornton Revenue Division offers free sales and use tax workshops. These general workshops provide tax information for all types of businesses, including service-only organizations, home-based & commercial businesses, and wholesalers. Please join us for our upcoming tax workshop as you learn about getting a business license, collection and remittance of sales & use taxes and how to file your returns!

If you are interested in attending the next workshop (Wednesday, July 10, 2024 at 2:00pm in-person at Thornton City Hall: 9500 Civic Center Drive), please email us at or call the Revenue Division at 303-538-7400 to register – we will then supply you with further instruction.

  • If you are unable to attend this session, future sessions for 2024 are now accessible! Contact us today to signup.
    • Thursday, October 24, 2024 at 9:00 a.m.
  • Workshops are tentatively scheduled to be held in-person during this interactive session with a tax auditor and revenue agent. If you are unable to attend, would prefer a virtual option, or just have questions about sales/use tax or business licenses please call our department directly for assistance:
    • Sales Tax Division
    • 303-538-7400

About the Revenue Division

The City's Revenue Division is responsible for collection of the following taxes and fees: sales, use, lodging and telephone taxes, and E911 surcharges. We assist businesses and the public in understanding how Thornton's taxes apply to their operations or purchases. The Sales Tax Division is also responsible for auditing businesses to ensure that they are in compliance with the City Code.

Property taxes are administered by the County. Please contact Adams County directly for questions regarding your property taxes.