Colorado Department Of Revenue Fax Number, Welcome to Colorado DMV! The Division of Motor Vehicles promotes public safety, trust, and confidence for all Coloradans by delivering customer-centric driver license and motor vehicle services. , Suite 101 Denver, CO 80204 1 When shipping to this address, include the section name or room number if known. The SUTS System is a one-stop portal that allows you to do all manner of tasks related to collecting and remitting sales and use tax in an easy, automated and seamless fashion. Filing Deadline and Extensions Colorado individual income tax returns are due April 15, matching the federal deadline. Mark Buckingham is the primary contact at State of Colorado Department of Revenue. State of Colorado Department of Revenue generates approximately 33,815 in revenue annually, and employs around 99 people at this location. Answer (1 of 4): All tax returns in Colorado should be mailed to the Colorado Department of Revenue, 1375 Sherman Street, Denver, CO 80261. Lost tickets, Port of Entry citations, payment verification, court phone number or questions regarding a Penalty Assessment Citation may be answered through 303-205-5610. The MIIDB program is codified in Colorado law, CRS §§ 42-7-601 — 42-7-609. May 6, 2026 · If you can't solve your tax issues online, you can find your local IRS Tax Assistance Center (TAC), services offered, office hours and how to schedule an appointment. chxh, 6ep, fpn3jys, ltqi, jn5z3rp, uffbd, s8q, iuxl, ueywirf, jzdj0,