File Individual Income Tax Online
First, complete the federal income tax return you will file with the Internal Revenue Service (IRS). You will use numbers from your federal return on your Colorado income tax return.
- Revenue Online: You may use the Colorado Department of Revenue’s free e-file and account service Revenue Online to file your state income tax. You do not need to login to Revenue Online to File a Return. After you file, you have the option of setting up a Login ID and Password to view your income tax account in Revenue Online.
- You may opt to e-file through a paid tax professional or purchase tax software to complete and file returns.
Individual Income Tax Services in Revenue Online
Tips for Setting up your Revenue Online Account
How to Make an Individual Income Tax Payment Using Revenue Online
Requesting a Letter ID for Individuals
Resetting your Revenue Online Password
Authenticating a Browser or Device
Solving Login Issues