Business Income Tax Services in Revenue Online
Businesses can file their return online through Revenue Online. However, if you are a first-time Colorado income tax filer, you must file a paper return or through an accepted tax software program. After your first tax return is processed, you may create your own Login ID and Password to use in Revenue Online. For more information, review the E-Filer Handbook or visit the Online Services webpage.
Login Required
- File/amend income tax returns
- Check your refund status
- View payment history
- View account balances
- View letters from the Department
- Update your account mailing address
- Set up Third Party access to your tax account (Instructions)
No Login Required
- Submit E-Filer Attachments for income tax returns (Instructions)
- File a protest
- Add Power of Attorney
- Make a payment