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.

Tax Professionals:

• Current Income Tax E-Filer Handbook
• Current Income Tax Accepted Software

Individual Income Tax Services in Revenue Online