Colorado electronic filing information

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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
Federal/State Electronic Filing Program
1375 Sherman Street, Rm. 206
Denver, CO 80261

www.colorado.gov/revenue
Email: DOR_TaxpayerService@state.co.us
Phone: 303-866-3889
Tax Refund Inquiries: 303-238-7378

State electronic filing details

Grace period 5 days
E-filing mandate No
Accepts state-only filings Yes
Return types accepted

Resident

Part-year resident

Nonresident

Estimate payments

Extension

Amended

Return types not accepted

Superseded

Accepts returns with these conditions

Refund

Zero balance

Balance due

Direct deposit of refunds Yes
Accepted forms of payment

Direct debit (EFW)

Credit card 

Online ePayment

Signature requirements ERO retains DR-8454 for 4 years
Supports PDF attachments Yes
Tax year(s) supported for e-filing Current tax year and two prior tax years
Special considerations See Electronic filers handbook

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

www.colorado.gov/cs/Satellite/Revenue/REVX/1251570868469
Email: stephen.asbell@state.co.us
Phone: 303-866-3889

State electronic filing 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  

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.

Taxpayer Service Division
Electronic Filing Help Desk
1375 Sherman Street
Room 206
Denver, CO 80261

colorado.gov/tax/income-tax-fiduciary-file
Email: Stephen.Asbell@state.co.us
Phone: 303-866-3889

State electronic filing details

Grace period 10 days 
E-filing mandate No
Accepts state-only filings Yes
Return types accepted

Partnership

Short year

Composite (part of main return)

Return types not accepted

Amended

Estimates

Extensions

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-P for 4 years or attaches as PDF
Supports PDF attachments Yes
Tax year(s) supported for e-filing Current tax year and two prior tax years
Special considerations  

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.

CO Department of Revenue - Electronic Filing Help Desk

www.taxcolorado.com

Email:  Stephen.Asbell@state.co.us

Phone: 303-866-3889

State electronic filing details

Grace period 10 days
E-Filing mandate Yes
Accepts state-only filings Yes
Return types accepted

Resident

Non-resident

Return types not accepted

Amended

Estimate payments

Extension

Withholding

Accepts return with these conditions

Refund

Zero balance

Balance due

Direct deposit of refunds No
Accepted forms of payment

Direct debit (within 2 days after filing)

Credit card (via Revenue Online)

Online e-payment

Check (with Form 900F)

Signature requirements ERO retains DR-8453F for 4 years/
Supports PDF attachments Yes
Special considerations
  • Colorado requires a signature date in order to e-file.
  • Colorado requires that you sign Form DR 8453F prior to submitting the electronic file.

 

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