Say goodbye to the paper hassle. Revenue Online makes filing your return a simple and easy process.
Convenient, accurate, secure and fast. Avoid errors and processing delays.
Create your own Login ID and Password. Then use them to get to your account and File Now. www.Colorado.gov/RevenueOnline
Still want to download a form? These forms won't calculate the tax for you but if you want to use a paper form, click the link below.