How to Register
How to Register Electronically
You must first set up an account through Revenue Online.
How to Register by Paper
Download the Authorization for Electronic Funds Transfer for Tax Payments form (DR 5785) and mail or fax to:
Colorado Department of Revenue
Attn: CDO Research Unit
1375 Sherman St.
Denver, CO 80261
FAX: (303) 866-3112
Paper applications will take longer to process, so it is best to apply through Revenue Online and receive your EFT Number and PIN Code that can be used the day after your submit your EFT request.
Note: If you wish to make a payment today with a credit card or electronic check, visit Revenue Online. This service includes an administrative fee. Details are available on the payment Web site.
Submit your tax payment before 4 p.m. 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.