Sales & Use Tax

Tax Seminars

Upcoming Sales & Use Tax Seminar will take place virtually on Tuesday, Oct. 13, from 9 a.m. to noon. For RSVP and questions, contact the Commerce City Tax Division at salestax@c3gov.com or 303-289-3628.

View the 2026 Sales & Use Tax Seminar 

Online Tax Filing Systems

Commerce City provides businesses two online tax filing system options: MUNIRevs (city portal) and SUTS (State's portal).

File & Pay Your Returns Online

Please Note:

• Before you file your taxes, please visit the Business License page to review license requirements based on the location of your business.
• Commerce City does not require annual renewal of the general sales and use tax business license.

Sales Tax

IMPORTANT: South Adams County Fire Protection District voters approved a new sales tax of up to 0.5% (one-half of one percent) on November 4, 2025, which took effect on January 1, 2026.

The current Sales and Use Tax Rates for the City consist of the following:

As a home rule municipality, Commerce City has a tax code for the administration of its sales and use tax.

• Sales and Use Tax Code & Regulations(PDF, 1MB) (Updated 12/7/2020)
• Sales and Use Tax Return - Instructions(PDF, 214KB)
• Sales and Use Tax Return - Excel Sheet(XLSX, 58KB)
  • Note: If you are having printing issues, save the filled out Excel sheet as a PDF and then print the PDF version
• Sales and Use Tax Return - PDF Version

Construction & Contractors

• Construction Industry Guide(PDF, 214KB)
• Construction Equipment Declaration(PDF, 392KB)
• Prepaid Tax Estimate Form(PDF, 183KB) (for contractors working on projects that do not require a city permit)

Resources

• Active Sales and Use Tax Accounts(PDF, 980KB) (Updated 04/2024)
• Affidavit of Exempt Sale(PDF, 271KB)
• Business Licensing
• Claim for Refund(PDF, 116KB)
• Power of Attorney(PDF, 168KB) (Fillable Form)
• Property Address Lookup
• Voluntary Disclosure Guidelines(PDF, 108KB)
• Rules Governing Finance Hearings(PDF, 267KB) (Updated 2/11/2022)
• Single Use Bag Fee
• Tax Compliance Guide Marijuana – Medical and Recreational Retail Sales(PDF, 279KB)