Colorado – Filing an Appeal or Power of Attorney and Amending a Return Online

SALT Report 2402 – The Colorado Department of Revenue issued guidance regarding how to use Revenue Online to quickly amend a return, submit Power of Attorney documents or protest taxes due. Revenue Online requires that you sign up and obtain a user ID and password; however, once you have done so, you can log in to:

  • View your tax returns and payments,
  • Amend a return,
  • Make payments,
  • Submit an agreement to pay request,
  • Update your address, and
  • View and print any letters that have been sent to you by the Department

Power of Attorney

Taxpayers and tax professionals can file a Power of Attorney form through Revenue Online. By doing so, the taxpayer’s representative will have access to the taxpayer’s confidential tax information and records and will be able to conduct business on the taxpayer’s behalf, much more quickly.

Filing a Protest

The Department warns that if you have a dispute it is best to file it with Revenue Online as the Department reviews all cases in the order in which they are received. If you do not file online, it can take up to six months for the Department to issue a response to your protest.

For Further Information

Colorado Department of Revenue – Online Services