The Department of Revenue is processing 2023 income tax returns. For more information, please read the Department's announcement.


2023 Income Tax Forms | C Corporations

Filing Forms

  • DR 0112 Book - C Corporation Income Tax Booklet (Contains: DR 0112, DR 0112C, DR 0112CR, DR 0112RF,  DR 0158C, and DR 0900C)
  • DR 0112 - C Corporation Income Tax Return (form only)
  • DR 0112C - Schedule C: Colorado Affiliations Schedule
  • DR 0112EP - Corporate Estimated Income Tax Worksheet
  • DR 0112RF - Receipts Factor Apportionment Schedule
  • DR 0112X - Amended Return for C Corporations
  • DR 8454 -  Income Tax Declaration for Online Electronic Filing

Payment Forms

  • DR 0112EP - Corporate Estimate Income & Tax Worksheet
  • DR 0158-C - Extension of Time for Filing a Colorado C Corporation Income Tax Return
  • DR 0205 - Tax Year Ending Computation of Penalty Due Based on Underpayment of Colorado Corporate Estimated Tax
  • DR 0900C - C Corporation Income Tax Payment Form

Credit, Subtraction & Deduction Forms

Child Care Contribution

Contaminated Land Remediation

  • DR 0348 - Remediation of Contaminated Land Credit Transfer Schedule
  • DR 0349 - Remediation of Contaminated Land Credit Use Schedule

Enterprise Zones

  • DR 0078 - Application for Extended Enterprise Zone Tax Credits in Terminated Enterprise Zone Area
  • DR 0078A - Pass-Through Entity Enterprise Zone Credit Distribution Report
  • DR 1366 - Enterprise Zone Credit and Carryforward Schedule

Gross Conservation Easement

  • DR 1305 - Gross Conservation Easement Donor Schedule
  • DR 1305E - Gross Conservation Easement Credit Transfer Schedule
  • DR 1305F - Gross Conservation Easement Credit Pass-Through Schedule
  • DR 1305G - Gross Conservation Easement Credit Use Schedule

Innovative Motor Vehicle

Other Forms

  • DR 0113 - Rural Jump Start Zone Credit
  • DR 0289 - Employer Contributions to Employee 529 Qualified State Tuition Program
  • DR 0366 - Rural & Frontier Health Care Preceptor Credit
  • DR 0375 - Credit for Employer Paid Leave of Absence for Live Organ Donation Affidavit
  • DR 1316 - Colorado Source Capital Gain Subtraction Affidavit
  • DR 1330 - Strategic Capital Tax Credit and Carry Forward Schedule

The forms on this page are fillable and savable (except the instruction booklets). Make sure you protect your personally identifiable information (PII). Do not save completed tax forms on a public device (e.g. at the library, school computer lab, shared work computer, etc.). For more information on identity theft prevention, visit the Tax Fraud Prevention web page.