1065 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
1375 Sherman Street Room 206
Denver, CO 80261
Phone
: 303-866-3889

State electronic filing details

E-filing information
Details
Grace period
10 business days
E-filing mandate
No
Accepts state-only filings
Yes -  Attach the federal XML created for this State (Default). Only Federal e-file validation errors have to be cleared. E-file Reject Diagnostics do not have to be cleared.
Return types accepted
Partnership
Return types not accepted
Amended
Composite
Composite Extension
Consolidated
Estimates
Extensions
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
Signed Form DR 8454 is transmitted with return or retained by preparer for 4 years.
PIN is not allowed as signature.
Supports PDF attachments
Yes
Tax year(s) supported for e-filing
Current tax year and two prior tax years
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