DOR Taxation web site

Say goodbye to the paper hassle. Revenue Online makes filing your return a simple and easy process. 

  • Revenue Online is FREE and available 24-hours a day, every day.

  • Revenue Online will do all the calculations for you as you file the return.

  • Taxes and rates for your location are available in Revenue Online. No need to look them up.

  • Make payments by e-check, credit card or EFT through Revenue Online.

Create your own Login ID and Password. Then use them to get to your account and File Now. www.Colorado.gov/RevenueOnline


RevenueOnline 
 

Still want to download a form? These forms won't have the tax rates but if you want to use a paper form, click a link below. Note: Fill-in forms are not saveable and will not file the return for you. You must print the return and mail it. However, you can file the return now through Revenue Online.