Table of Contents

W-2 E-Filing: Colorado

Nina Tchistiakova Updated by Nina Tchistiakova

Due date

January 31

E-filing threshold

Must E-file if 250 or more 

Filing options

Electronic filing

Transmittal form

Colorado requires Form DR1093 to be paper filed if paying additional tax or requesting a refund. Payroll System doesn't support Form DR1093.

Required file name

Any name with “.txt” at the end.

E-filing website

https://www.colorado.gov/revenueonline/_/

Submitting files

Register the submitter at least five days prior to submitting the file. 

Anyone who will submit W-2s, 1099s, or W-2Gs– whether a tax professional, tax service provider and/or a person who does the payroll at the business – must register.

An employer that files electronically should not submit a paper Form DR 1093, except to remit any additional tax due or claim a refund for an overpayment.

A) Go to Revenue Online at least five days before you plan to submit a file or type each W-2, 1099, or W-2G entry.

B) Click on the hyperlink to “Submit Year-End Withholding” under the heading “Additional Services.”

C) Click on the link Request Withholding Submitter Access.

D) Complete the requested fields.

A Confirmation will appear to confirm that the department has received the registration request. In most cases, the registration process is completed overnight; however, it may take up to five business days to complete.

When you have completed the registration process, you do not need to do it again. Each year when you submit your W-2s, 1099s, or W-2Gs in Revenue Online, you will start at Step 2.

Corrected W-2s should be mailed to the Department, along with a cover letter, to:

Colorado Department of Revenue

Discovery Section

PO Box 17087

Denver, CO 80217-0087

How did we do?

W-2 E-Filing: California

W-2 E-Filing: Connecticut

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