For help, call the Department of Revenue's Federal/State Electronic Filing Help Desk:
303-866-3889 or see our File > Corporation Income Tax information at Colorado.gov/Tax
Instructions
Line Instructions
Tax Year
Enter the beginning and ending dates of the tax
year led. Name, Address and Colorado Account
Number and Federal Employer Identication
Number Print or type this information in the space
provided exactly as it appears from Colorado
Form 112.
Part ITax Return Information
Line 1 — Report the total income from Federal
Form 1120.
Line 2 — Report the amount of taxable income
reported on Federal Form 1120.
Line 3 — Report the amount of tax reported on
Colorado Form 112, line 19.
Line 4 — Report the amount indicated as Colorado
payments from Colorado Form 112 line 25.
Line 5 — Report the amount reported as the amount
you owe from Colorado Form 112 line 36.
Line 6 — Report the amount reported as a refund
on Colorado Form 112 line 39.
Part II – Declaration of Taxpayer (Taxpayer
using ERO or Taxpayer who is a
PC ler)
All Taxpayers
All Taxpayers are required to sign and date the
DR 8453C at the time of ling. An electronically
transmitted income tax return will not be considered
complete and/or led until the DR 8453C has been
signed/dated by all appropriate taxpayers. Retain
a copy of this form in your records for four years.
When feasible, attach this form in PDF format to
the e-led return.
Taxpayers Using an ERO or Preparer
Taxpayers who use an ERO or tax preparer should
maintain copies of all information given to them by
the ERO or tax preparer for the period covered by
the statute of limitations, but are not required to
mail anything to the Colorado Department of
Revenue at the time of ling.
Part III – Declaration of Electronic Return
Originator (ERO), Preparer or
Transmitter
The ERO or the preparer of the return is required to
sign and date the DR 8453C at the time of ling. If
the ERO is also the preparer, the check box labeled
"Check if also preparer" must be checked. The ERO
or preparer is also required to report their Social
Security Number or preparer identication number
(PTIN) in the space provided. If the taxpayer is the
preparer, PART III does not need to be signed/dated.
Other Information
Colorado Statute of Limitations
The general rule for the Colorado statute of limitations
is the federal statute of limitations plus one year, or
four years from the federal due date of March 15.
DR 8453C on Demand by Colorado DOR
The paid preparer is also responsible for establishing
and maintaining a system that allows retrieval of any
particular DR 8453C and attachments by taxpayer
social security number on demand by the Colorado
Department of Revenue.
*DO=NOT=SEND*
DR 8453C (06/13/18)
COLORADO DEPARTMENT OF REVENUE
Denver, CO 80261-0006
Colorado.gov/Tax
*188453C=19999*
DR 8453C (06/13/18)
COLORADO DEPARTMENT OF REVENUE
Denver, CO 80261-0006
Colorado.gov/Tax
Colorado Account Number FEIN Tax Year Beginning (MM/DD/YY) Tax Year end (MM/DD/YY)
Business Name
Phone Number
Address
City State Zip
Part I — Tax Return Information
1. Total Income, from federal Form 1120 1 $
2. Federal Taxable Income from federal Form 1120 2 $
3. Colorado Tax, line 19 on Colorado Form 112 3 $
4. Colorado Payments, line 25 on Colorado Form 112 4 $
5. Amount You Owe, line 36 on Colorado Form 112 5 $
6. Refund, line 39 Colorado Form 112 6 $
Part II — Declaration of Tax Payer
Signature Title Date
Part III — Declaration of ERO/Preparer/Transmitter
If the transmitter did not prepare the tax return, check here
ERO's Signature Preparer Identication Number or Your SSN
Date
(MM/DD/YY)
Check if also Preparer
State of Colorado
Corporate Income Tax Declaration for Electronic Filing
When feasible attach in PDF format to your e-led return Do not mail this form to the IRS or the
Colorado Department of Revenue Retain with your records
Under penalties of perjury, I declare that I am an ofcer of the company listed above and the information provided for electronic ling and the
amounts shown in Part I above agree with the amounts shown on the company's 2018 Federal/Colorado income tax returns, and that said
tax returns, statements, schedules and attachments are true, correct, and complete to the best of my knowledge and belief. I understand that
I (or my Electronic Return Originator (ERO) if applicable) may be required to provide paper copies of this declaration, my returns, withholding
statements, schedules and attachments upon request by the Colorado Department of Revenue at any time during the period covered by the
Colorado statute of limitations.
If I am not the preparer, I declare only that the amounts shown in Part I above agree with the amounts shown on the taxpayer's 2018 Federal/
Colorado income tax returns. If I am the preparer, under penalties of perjury I declare that I have reviewed the above taxpayer's 2018 Federal/
Colorado income tax returns and that the information provided to me by the taxpayer and the amounts shown in Part I above agree with the
amounts shown on said tax returns, and that said tax returns, statements, schedules, and attachments are true, correct, and complete to the
best of my knowledge and belief. As preparer, I further declare that I have obtained the taxpayer's signature on this form at the time of ling and
have provided the taxpayer with copies of all forms and information led. I also agree to maintain this signed Form (DR 8453C) for the period
covered by the Colorado statute of limitations, and to provide paper copies of this declaration, said returns, withholding statements, schedules,
and attachments upon request by the Colorado Department of Revenue at any time during this period.