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What is Colorado Form 104

The Colorado Individual Income Tax Form 104 is a state tax form used by individuals to file their income tax returns with the Colorado Department of Revenue.

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Colorado Form 104 is needed by:
  • Full-year residents filing income taxes in Colorado
  • Part-year residents who earned income in Colorado
  • Nonresidents with Colorado-sourced income
  • Spouses filing jointly on their Colorado tax return
  • Tax preparers assisting clients with Colorado tax filings

How to fill out the Colorado Form 104

  1. 1.
    Access the Colorado Individual Income Tax Form 104 on pdfFiller by searching for the form name in the document library.
  2. 2.
    Open the form by clicking on it, allowing pdfFiller to load the interactive fillable fields.
  3. 3.
    Before completing the form, gather essential documents like W-2s, 1099s, and any prior year’s tax returns to ensure you have your federal taxable income and relevant deductions.
  4. 4.
    Navigate the form using pdfFiller's interface by clicking into the fields where the information is required, filling in your federal taxable income, additions, subtractions, and tax credits as directed.
  5. 5.
    Follow the prompts in pdfFiller to designate any contributions to various funds and add information authorizing a third party, if applicable.
  6. 6.
    Once all fields are completed, review the form for accuracy, double-checking all entries against your gathered tax documents.
  7. 7.
    Finalize the form by signing in the designated area and ensuring you date it under the penalties of perjury statement.
  8. 8.
    Save your work using the save option in pdfFiller, and consider downloading it as a PDF for your records.
  9. 9.
    When ready, submit your completed form through pdfFiller's submission options, making sure to comply with any filing deadlines.
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FAQs

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Form 104 is for full-year and part-year residents of Colorado, as well as nonresidents who earned income in the state. Ensure all sources of income are accounted for.
The deadline to file your Colorado individual income tax return is typically April 15 of each year. If it falls on a weekend or holiday, the deadline may extend to the next business day.
You can submit your completed Colorado Form 104 electronically through approved e-filing services or by mail to the Colorado Department of Revenue, depending on your preference.
To complete Form 104, you will need your W-2 forms, 1099s, prior tax returns, and any documentation related to income deductions or credits you wish to claim.
Common mistakes include missing signatures, incorrect Social Security numbers, and failing to include all sources of income. Double-check the entries before submission to avoid delays.
Processing times can vary, but you can generally expect it to take 6-8 weeks for paper submissions and quicker for e-filed returns. Check online for processing status updates.
Filing Form 104 itself does not incur fees; however, any tax owed must be paid, and there could be fees if you use a tax preparer or filing service.
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