P.O. Box 17087

Denver, CO 80217-0087

Taxpayer Helpline: (303) 238-7378

On the climate front, the Department of Revenue via the Colorado Lottery both sponsors and hosts a variety of volunteer opportunities that help the environment and address climate-related impacts. The Department of Motor Vehicles also offers several license plates that go toward supporting a variety of climate and environmental causes, while the Taxation Division partners with the Colorado Energy Office on several climate-related tax incentives (Alternative Transportation Credit, Innovative Motor Vehicle Credit, Plastic Recycling Investment Credit, Remediation of Contaminated Land Credit).