1120 Colorado electronic filing information

State contact information

If you have specific questions about what you can e-file or about rejections you received, contact the state for more information.
Colorado Department of Revenue
Steve Asbell
1375 Sherman Street
Denver, CO 80261-0008
Phone
: 303-238-7378

State electronic filing details

E-filing information
Details
Grace period
10 days
E-filing mandate
No
Accepts state-only filings
Yes, but state prefers you send the federal at the same time.
Return types accepted
C Corporation
S Corporation
Consolidated / Combined
Short year
Return types not accepted
Amended
Estimates
Extension
Composite
Withholding
Accepts returns with these conditions
Refund
Zero balance
Balance due
Direct deposit of refunds
Yes
Accepted forms of payment
Direct debit (EFW)
Electronic funds transfer (EFT)
Check by mail
Signature requirements
ERO retains signed DR 8453-C or DR 8453-P for 4 years
Supports PDF attachments
Yes
Tax year(s) supported for e-filing
Current tax year and two prior tax years
Special considerations
N/A
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