Tax Authority Contacts


General Inquiries

  • Individual: 800-829-1040
  • Business: 800-829-4933

Colorado Department of Revenue:  

Colorado Department of Revenue website offers many services, including: Check Refund Status, Payments, Set Up Login ID and

Password, and general guidance about managing your tax account. You will need to provide the following information from your tax return: 

• Your Social Security Number (or Individual Taxpayer Identification Number) 

• The exact whole dollar amount of your refund.

Additional Government Links

Electronic Federal Tax Payments System:


Colorado Department of Labor and Employment:


Colorado Secretary of State: