Tax Library
- FYI Publications
- Common Questions
- Tax Information Index
- Rules and Regulations
- Statutes
- Tax Update Newsletter
- Tax Conferee
- News and Announcements
- Possible Delay at Service Centers
- Alert: Possible Telephone Scam
- Avoid Errors and Get Your Refund Faster
- January 1, 2013 Sales Tax Rate Changes
- Hurricane Sandy -- Disaster Relief for Taxpayers
- Information for Taxpayers Affected by Wildfires
- July 1, 2012 Sales Tax Rate Changes
- Taxpayers Must Pay Balance Due on 2011 Taxes
- Send Us a Message through Revenue Online
- 2012 Business Tax Symposium -- Register Now
- Football Stadium District Sales Tax Expires Dec. 31
- Gross Conservation Easement Guidelines
- Paper Sales Tax Returns to Receive Closer Look
- State Stops Mailing Income Tax Booklets
- January 1, 2012 Sales Tax Rate Changes
- News and Announcements - 2011 and Prior
- Notification: Disallowed Conservation Easement Credits
- Colorado Tax Amnesty Oct. 1 - Nov. 15, 2011
- July 1, 2011 Sales Tax Rate Changes
- 2010 Income Tax Balance Due Notices
- Online Access to Individual Income Tax Account
- Income Tax Filing Deadline Changed for 2011
- NetFile Returns Filed in January
- File Consumer Use Tax Online
- Information about E911 Surcharge
- 2010 106 Partnership Booklets will not be mailed
- January 1, 2011 Sales Tax Rate Changes
- Taxpayers: Respond ASAP to November letters
- Internet Sales/Non-Collecting Retailers
- Meeting Notice - Filing a Refund Claim for Sales Tax
- Fire Victims May Request Copies of Tax Returns
- Amending Income Tax Returns
- July 1, 2010 Sales Tax Rate Changes
- Taxpayers Must Pay Balance Due on 2009 Taxes
- Incorrect Scan Lines on Some Colorado Estimated Tax Payment Coupons
- Certain Sales Tax Exemptions Eliminated
- Last-Minute Income Tax Filing Information
- Summit County Housing Authority (MHA) Tax Rate
- Common Income Tax Filing Errors
- January 1, 2010 Sales Tax Rate Changes
- Spouses of U.S. Military Servicemembers Tax Information
- Medical Marijuana
- Special Districts RTD/CD/FD Service Fee Change
- Tax Offices Closed Oct. 9 -- Furlough Day
- Expect revised 2009 sales tax coupons August 10
- July 1 Sales Tax Rate Changes
- New Daily Fee on Car Rentals Effective July 1, 2009
- State Sales Tax on Cigarettes
- State Service Fee for Businesses Eliminated
- Rulings
Last-Minute Income Tax Filing Information
Posted: April 15, 2010