2023 Colorado Amended Individual Income Tax Return
The 2023 Colorado Amended Individual Income Tax Return provides essential instructions for taxpayers needing to amend their filed returns. It outlines corrections for federal taxable income and applicable credits or deductions. This guidance is crucial for ensuring accurate tax reporting and compliance with state regulations.
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How do I fill this out?
To fill out this form correctly, start by gathering your original tax return and any necessary documentation. Input the correct amounts for federal taxable income and any relevant additions or deductions. Lastly, ensure all required attachments are included before submission.

How to fill out the 2023 Colorado Amended Individual Income Tax Return?
1
Gather your previous tax documents.
2
Complete the DR 0104X form with corrected amounts.
3
Include all required attachments.
4
Review your entries for accuracy.
5
Submit your amended return electronically or via mail.
Who needs the 2023 Colorado Amended Individual Income Tax Return?
1
Taxpayers who have made an error in their original filing need this form to amend their tax return.
2
Individuals claiming additional credits or deductions after the initial filing require this form to include those adjustments.
3
Those who need to change their filing status from single to joint or vice versa must use this form.
4
Part-year residents or nonresidents who need to correct previously omitted income should file this form.
5
Anyone responding to adjustments made by the IRS should file this form to ensure state records are updated accordingly.
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What are the instructions for submitting this form?
To submit your amended return, you can file electronically through Colorado's Revenue Online for a quicker process. If you prefer to mail your form, send it to the Colorado Department of Revenue at the designated address provided on the form. Ensure all documentation, including attachments and payment (if applicable), are included to avoid processing delays.
What are the important dates for this form in 2024 and 2025?
Important dates for the DR 0104X form include the original due date for filing the 2023 Colorado tax return and deadlines for filing the amended return, which is generally four years from the original due date. Be mindful of tax payment deadlines as various schedules may affect your obligations. For specific tax years, check the Colorado Department of Revenue for updates.

What is the purpose of this form?
The purpose of the DR 0104X form is to allow taxpayers to amend their Colorado Individual Income Tax Returns. It is crucial for correcting errors that may have occurred during the original filing. This ensures that all income, deductions, and credits are accurately reported and assessed by the state.

Tell me about this form and its components and fields line-by-line.

- 1. Your Last Name: The last name of the taxpayer filing the amended return.
- 2. Your First Name: The first name of the taxpayer.
- 3. Middle Initial: The middle initial of the taxpayer.
- 4. SSN or ITIN: The social security number or individual taxpayer identification number of the taxpayer.
- 5. Federal Taxable Income: The amount of federal taxable income from the original return.
- 6. Additions to Federal Taxable Income: Items to be added to the federal taxable income.
- 7. State and Local Income Taxes: Deductions claimed on the federal form.
- 8. Qualified Business Income Deduction Addback: Any business income deduction to be added back.
- 9. Federal Deduction Addback: Details of any federal deductions that need to be added.
What happens if I fail to submit this form?
Failing to submit the DR 0104X can result in unresolved tax obligations and potential penalties. It's crucial to amend your return to address any mistakes and avoid complications with the Colorado Department of Revenue. Timely filing ensures compliance and may even facilitate refunds.
- Tax Penalties: Failure to report changes may incur penalties for late or incorrect submissions.
- Interest on Unpaid Taxes: Unaddressed tax liabilities may accrue interest over time.
- Refund Delays: Missing an amendment can delay any potential refunds.
How do I know when to use this form?

- 1. Filing Status Changes: Use this form to update your filing status if it changed after your original submission.
- 2. Correcting Income: File this form to amend amounts reported as income that need adjustments.
- 3. Claiming Missed Credits: If you qualify for tax credits not claimed on your original return, use this form to amend.
Frequently Asked Questions
What is the purpose of the DR 0104X form?
The DR 0104X form is used to amend a previously filed Colorado Individual Income Tax Return.
Can I e-file my amended tax return?
Yes, you can file your amended return electronically using Colorado's Revenue Online service.
What attachments do I need to submit with my DR 0104X?
You must include all supporting documents, such as W-2s, 1099s, and any federal reports relevant to your changes.
Is there a deadline for filing the amended return?
Generally, the deadline is four years from the original return due date or three years from the last tax payment.
Can I change my filing status when amending?
Yes, you can change your filing status using the DR 0104X form.
How do I submit my amended return?
You may file electronically or mail the completed form to the Colorado Department of Revenue.
What if I owe additional tax?
If your amended return results in owing more tax, include payment with your submission.
Can I get a refund from my amended return?
Yes, if your amendment shows an overpayment, you may receive a refund.
Do I need to include a death certificate if claiming a refund for a deceased taxpayer?
Yes, you must submit a copy of the death certificate along with the amended return.
What if the IRS made changes to my return?
If the IRS adjusts your return, use the DR 0104X to make corresponding adjustments to your state return.