Colorado Department of Revenue Mailing Address

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Colorado Department of Revenue Mailing Address

Colorado Department of Revenue Mailing Address is, Colorado Department of Revenue, Section or Employee Name and Room Number, P.O. Box 17087, Denver, CO 80217-0087

Correspondence & Payments

Letters & Protests
U.S. Postal Service
Colorado Department of Revenue
Section or Employee Name and Room Number
P.O. Box 17087
Denver, CO 80217-0087

Express Mail Delivery (DHL, FedEx, UPS, etc.)
Colorado Department of Revenue
Section or Employee Name and Room Number
1881 Pierce St.
Entrance B
Lakewood, CO 80214

Tax Payments
Be sure to include the payment form/voucher and mail payments to:
Colorado Department of Revenue
Denver, CO 80261-0004

Citizens’ Advocate Concerns

If this is your first attempt to resolve a concern, please call the Taxpayer Services Helpline (303) 238-7378. Taxpayer Service Representatives are available (except on state holidays) Monday through Friday, 8:00 a.m. to 4:30 p.m. MT.

If mailing your concern, please provide a detailed written account of your concern and photocopies of any supporting documentation. Also, be sure to include your full name/business name, contact information, and Colorado Account Number (CAN) in your submission. The mailing address for the Advocate is:

Citizens’ Advocate Office
P.O. Box 17087
Denver, CO 80217-0087

Dedicated Phone Support
Collections: 303-205-8291
Collections Hours of Operation:
Monday-Thursday from 8:00 a.m. to 4:30 p.m.
Friday 9:00 a.m. to 4:30 p.m.
EFT/Electronic Payment: 303-205-8333
Sales & Use Tax System (SUTS) Support: 720-795-7759

Tax Unit Contact Phone Numbers
Bankruptcy: 303-866-3711
Compliance: 303-866-3711
Discovery: 303-205-8292
Excise Tax Unit (Cigarette, Liquor, Nicotine, Marijuana, and Tobacco Products): 303-205-8287
Field Audit: 303-692-7912
Fraud and Tax Evasion: 303-205-8262
Fuel Tax Unit (Fuel & IFTA): 303-205-8205
Special Event Sales Tax: 303-866-5643

Hearing or Speech Impaired Relay Services
To use this service, dial the appropriate number below. Give the Relay Colorado agent the number that you would like to call. The Relay Colorado agent will stay on the line to relay the information/conversation to you.
TTY Telephone Users: 1-800-659-2656
Voice Telephone Users: 1-800-659-3656

References:
Colorado Department of Revenue