Colorado Department of Revenue Customer FAQ

For issues regarding your missing refund, you can call the Colorado Department of Revenue's Taxation Division. They provide assistance through their taxpayer helpline during their business hours which are listed on their website. Be prepared to provide your social security number, filing status, and the amount of your refund for identity verification purposes. Please remember peak times may experience high call volumes, so it may be beneficial to call either at the beginning or end of the day.