Coronavirus Disease 2019 (COVID-19) in Colorado: State & National Resources

Contact Us By Email

General Tax Information & Account Questions - Please allow 2-5 business days for an email response for general tax inquiries. For a faster response, please call the Taxpayer Helpline at (303) 238-7378.

Tax Unit Contact Emails


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Subscribe to our free email subscription service to receive notifications when new tax information is available. With a subscription, you automatically receive updates without having to return to the website and check for changes. Email updates are a free service provided by CDOR. Your email address will only be used to deliver the information you've requested. 

Citizens' Advocate

If you still have questions after speaking with the Taxpayer Services Team and any applicable Taxation Units listed above, the Citizens' Advocate may be able to help. Please fill out the Citizens' Advocate Contact Form on the Advocate web page to send an email to the Advocate. Please be sure to fill out the form in its entirety, as it provides the Advocate with the information needed to begin the process. The Advocate will coordinate and facilitate a resolution with the appropriate division. 

If this is your first attempt to resolve a concern, please call the Taxpayer Services Helpline.