Contact Us

Contact Us by Email, Phone, and Fax

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Taxpayer Helpline: (303) 238-7378

• Taxpayer Service Representatives are available Monday through Friday, 8:00 a.m. to 4:30 p.m. (except on state holidays).

Other Contact Phone Numbers:  

Electronic Payment/EFT Help

Phone: 303-205-8333

 

Report Tax Evasion, Fraud or Scams- Please call this number if you believe you are a victim of fraud or a scam.

Phone: 303-205-8262

 

Bankruptcy-Please contact this section only if you have an active case already filed in bankruptcy court.

Phone: 303-866-3711

 

Collections- The Collections Section can assist with payments, payment plans, wage/bank garnishments, judgments, liens, and third-party collection agencies.

Phone: 303-205-8291

Fax: 303-866-2037

Hours: Mon-Thurs 8am-4:30pm, Fri 9am-4:30pm

 

 

Discovery-The Discovery Section can assist with tax adjustments and estimated returns based on third-party data. The Discovery Fraud Section can assist with taxpayer verification.

Sign Up for Tax News and Updates by Email

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Tax Payments

Please note the following when sending correspondence and payments to the Colorado Department of Revenue:

• The zip code 80261 is exclusive to the Colorado Department of Revenue. As a result, a street address or box number is not required when mailing forms or payments to 80261 via USPS First Class Mail. Be sure to add the zip code + 4 digits (80261-XXXX) to ensure proper delivery and payment processing.
• Be sure to check the letter you received or your tax form for the correct mailing address first! If there is an address noted, be sure to send your correspondence and/or payment to the address on the form or letter.
• Be advised that sending correspondence and/or payments without proper postage or via certified mail may delay the delivery of your mail, which may cause due dates to be missed.
• Do not combine correspondence, payments and/or tax forms (other than payment forms/vouchers) in the same envelope.  Each of these requires special handling, so they must be sent separately and must be routed to the proper address. 

Hours: Mon-Fri, 8am-5pm (closed for lunch from 12-1pm)

 

222 S. 6th St., Room 208
Grand Junction CO  81501

 

Pueblo
827 W. 4th St., Suite A
Pueblo CO 81003
(Inside the DMV)

 

The Governor’s Office of Constituent Services ensures each State Department has a Citizen Advocate.  The Citizen Advocate is different from a Taxpayer Advocate in that they can assist in all divisions with the Department of Revenue including Enforcement, Lottery, Motor Vehicle and Taxation.  The advocate helps navigate concerns to Revenue management when normal methods for resolving issues or disputes have been ineffective.  Concerns are tracked to ensure a   prompt response.  Rules, regulation and statute can sometimes limit outcomes; however, the advocate will provide specifics.  We are restricted from providing any legal advice.  If this is your first attempt to resolve a problem, please use   one of our other contact methods listed above. The advocate will coordinate and facilitate a resolution with the appropriate division, generally within three working days.

 

Relay Colorado is a free service for people with hearing or speech loss to communicate with standard telephone users.  Relay Colorado is available 24 hours per day, 365 days per year.