Colorado – Warning Issued To Paper Filers

SALT Report 3517 – In a letter dated October 22, 2014, the Colorado Department of Revenue warned taxpayers using incorrect or outdated business tax forms of the potential penalties.  Effective immediately all forms sent to the department must be the current version and completed in black ink.  Failure to do so may result in late filing penalties and loss of the timely filing discount.

Current forms may be found at to sign up for Revneue Online to file electronically visit

For Further Information:

CO DOR Taxation Division