If you need to speak to a live customer service representative in the Colorado Department of Revenue customer service you need to dial 1-303-238-7378. To speak with a live agent, you need to press 1 (for individual income tax or PTC Rebates), then press 0 (to speak with an agent) and stay on the line (typical waiting time is about 10-40 minutes).

Alternatively you can use the following other options available in the customer service phone menu:

• For individual income tax or PTC Rebate press 1.
• For income tax-related to partnerships, corporations are fiduciary press 2.
• For sales and use tax press 3.
• For wage withholding tax press 4.
• For all other taxes press 5.
• For walking service center hours, locations and mailing addresses press 6.
• To repeat press 8.

Colorado Department of Revenue Customer Service Hours

Live customer service representatives from Colorado Department of Revenue are available 24 hours a day seven days a week.

Colorado Department of Revenue Customer Service Phones

• Colorado Department of Revenue customer service phone number is 1-303-238-7378. Live customer service representatives from Colorado Department of Revenue are available 24 hours a day seven days a week.
• To Contact the Colorado Lottery you need to dial 1-719-546-2400.
• To Contact the Division of Motor Vehicles you need to dial 1-303-205-5600.
• For Collections (assists with payment arrangements and garnishments) you need to dial 1-303-205-8291.
• For Discovery you need to dial 1-303-205-8292.
• For Field Audit you need to dial 1-303-355-0400.
• For EFT/Electronic Payment Help you need to dial 1-303-205-8333.
• To Report Tax Evasion, Fraud or Scams you need to dial 1-303-205-8262.
• To Contact the Legislative Liaison you need to dial 1-303-866-2819.

Colorado Department of Revenue Social Networks Customer Service

• Colorado Department of Revenue customer service could be contacted via Colorado Department of Revenue Facebook page. Typically Colorado Department of Revenue customer service representative replies within an hour.
• You can also reach Colorado Department of Revenue support via Colorado Department of Revenue Twitter page

Colorado Department of Revenue Mailing Addresses

Contact the Taxation Division:
PO Box 17087
Denver, CO 80217-0087

Enforcement Division:
PO Box 173350
Denver, CO 80217-3350

Lottery Headquarters:
225 N. Main Street
Pueblo, CO 81003

Colorado Department of Revenue Live Chat Support

Colorado Department of Revenue doesn’t offer live chat support. The best way to contact the Colorado Department of Revenue is to call them at 1-303-238-7378.

Colorado Department of Revenue support e-mail

• For Legislative Liaison send an e-mail to [email protected]

Colorado Department of Revenue Help Center

You can get more information about Colorado Department of Revenue on the Colorado Department of Revenue Quick Answer page.

Colorado Department of Revenue Opening Hours

Monday 8am to 5pm
Tuesday 8am to 5pm
Wednesday 8am to 5pm
Thursday 8am to 5pm
Friday 8am to 5pm
Saturday closed
Sunday closed