Oct. 17 is Extension Deadline to File Colorado State Income Tax
Published on Tuesday, October 18 2011 07:00
Taxpayers who did not submit their income tax filing by the Monday, April 18 deadline are reminded that the extension due date for Colorado’s 2010 income tax filing is Monday, Oct. 17. This is a “paperless” extension There is no form required to ask for an extension. Taxpayers have six months (Oct.