TaxFormFinder
Colorado E-Filer Attachment Form
Extracted from PDF file 2023-colorado-form-dr-1778.pdf, last modified June 2018E-Filer Attachment Form
*DO=NOT=SEND* DR 1778 (06/11/21) COLORADO DEPARTMENT OF REVENUE Denver CO 80261-0006 Tax.Colorado.gov E-Filer Attachment Form Instructions for DR 1778 The Department strongly recommends that you submit these documents using the e-Filer Attachment option at Colorado.gov/RevenueOnline, which eliminates the requirement to mail this form. Failure to timely submit required documentation will result in denial of the related credit. Revenue Online E-Filer Attachment provides you with a confirmation number and will be available to the Department immediately. Otherwise, complete this form, package it with your documentation and mail to the Department. Using this form can extend return processing time up to 6 weeks. Mail to: Colorado Department of Revenue Denver, CO 80261-0006 You must resubmit your supporting documentation if you file an amended return. DO NOT return this form in lieu of a payment form or if you are filing a paper return. This form is ONLY required if your taxes were e-filed and your software or preparer was unable to attach the required documentation electronically. DR 1778 (06/11/21) COLORADO DEPARTMENT OF REVENUE Denver CO 80261-0006 Tax.Colorado.gov Page 1 of 1 *211778==19999* E-Filer Attachment Form For Tax Year (MM/DD/YY) or fiscal year beginning (MM/DD/YY) Tax Type Individual Income C Corporation Income LP Income LLP Income Please print or type Partnership Income S Corporation Income LLC Income LLLP Income Association Income Non-Profit Income Taxpayer Last Name First Name Middle Initial Spouse’s Last Name (if applicable) First Name Middle Initial Taxpayer SSN or ITIN Spouse SSN or ITIN (if applicable) FEIN Taxpayer Address City State ZIP Mark the box for the documents submitted. See the Colorado Department of Revenue, Taxation Division website at Tax.Colorado.gov for more information about these credits. Other state(s) income tax return(s) Colorado Source Capital Gain Subtraction: DR 1316 Enterprise Zone Credit: DR 1366 and any applicable certification forms from the Zone Administrator Job Growth Incentive Tax Credit: Certification letter from the Colorado Economic Development Commission Gross Conservation Easement: DR 1305, DR 1305G, and supplemental documentation Affordable Housing Credit: CHFA certification letter Aircraft Manufacturer New Employee Credit: DR 0085 and/or DR 0086 Nonresident Partner, Shareholder or Members Agreement: DR 0107 Innovative Motor Vehicle Credit: Vehicle registration and the purchase invoice. Plastic Recycling Credit: Required documentation to substantiate credit (receipts, bills, etc) Child Care Contribution Credit: DR 1317 School-to-Career Investment Credit: Certification letter. Claim for refund on behalf of deceased taxpayer: DR 0102, death certificate, and, if applicable, court documents Other documentation for credits/subtractions claimed (mark the Other box below and enter details) Other Explain Signature of Taxpayer or Preparer Date (MM/DD/YY)
Form DR 1778
More about the Colorado Form DR 1778 Individual Income Tax TY 2023
The Department strongly recommends that you submit these documents using the e-Filer Attachment option at Colorado.gov/RevenueOnline, which eliminates the requirement to mail this form. Failure to timely submit required documentation will result in denial of the related credit. Revenue Online e-Filer Attachment provides you with a confirmation number and will be available to the Department immediately. Otherwise, complete this form, package it with your documentation and mail to the Department. Using this form can extend return processing time up to 6 weeks.
We last updated the E-Filer Attachment Form in January 2024, so this is the latest version of Form DR 1778, fully updated for tax year 2023. You can download or print current or past-year PDFs of Form DR 1778 directly from TaxFormFinder. You can print other Colorado tax forms here.
Other Colorado Individual Income Tax Forms:
TaxFormFinder has an additional 64 Colorado income tax forms that you may need, plus all federal income tax forms.
| Form Code | Form Name |
|---|---|
| Form 104 | Colorado Income Tax Return |
| Form 104EP | Individual Estimated Income Tax Payment Form |
| Form 104CR | Tax Credits for Individuals |
| Form DR 0900 | Payment Voucher for Individuals |
| Form 104X | Amended Income Tax Return Form |
View all 65 Colorado Income Tax Forms
Form Sources:
Colorado usually releases forms for the current tax year between January and April. We last updated Colorado Form DR 1778 from the Department of Revenue in January 2024.
About the Individual Income Tax
The IRS and most states collect a personal income tax, which is paid throughout the year via tax withholding or estimated income tax payments.
Most taxpayers are required to file a yearly income tax return in April to both the Internal Revenue Service and their state's revenue department, which will result in either a tax refund of excess withheld income or a tax payment if the withholding does not cover the taxpayer's entire liability. Every taxpayer's situation is different - please consult a CPA or licensed tax preparer to ensure that you are filing the correct tax forms!
Historical Past-Year Versions of Colorado Form DR 1778
We have a total of twelve past-year versions of Form DR 1778 in the TaxFormFinder archives, including for the previous tax year. Download past year versions of this tax form as PDFs here:
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While we do our best to keep our list of Colorado Income Tax Forms up to date and complete, we cannot be held liable for errors or omissions. Is the form on this page out-of-date or not working? Please let us know and we will fix it ASAP.