If you would like to register for electronic payments, complete the Authorization for Electronic Funds Transfer form.  Mail or fax it to the Colorado Department of Revenue (see address and phone number on the form).

Note: The registration takes several days to process so you will not be able to make an electronic payment now.   If you wish to make a payment today with a credit card or electronic check, visit Colorado Online Tax Payment. This service includes an administrative fee. Details are available on the payment Web site.

Submit your tax payment before 4:00 PM Mountain Time for credit to your account on that date. You must still mail-in required forms for many types of tax payments including sales tax.  Failure to do so may result in penalty and interest assessments.