2024 Colorado State Tax Deadlines
Colorado Individual Income Tax Filing deadlines and extensions for 2024.
If you are a resident or have been involved in significant business operations within Colorado, then you might be required to file Colorado State Taxes. We look at the most important tax deadlines and tax extensions for Colorado in 2024.
Colorado Business Tax Deadlines for 2024
C Corporation
Colorado C Corporation Tax Deadlines for 2024
You must file & pay Corporate Income Taxes in Colorado by April 15, 2025.
- File Online with Colorado Department of Revenue
- File by Mail must be postmarked by the due date
Form to use:
- Form 112 – Colorado Corporation Income Tax Return
Extension to File Taxes in Colorado for 2024
You must send payment for taxes in Colorado for the fiscal year 2024 by April 15, 2025.
The Extension Deadline is October 15, 2025, to file your Colorado corporate income tax return.
Colorado automatically grants a 6-month extension on filing corporate income tax returns. This means you do not need to file for an extension in Colorado.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Pass-Throughs
Colorado S Corporation & Partnership Tax Deadlines for 2024
You must file in Colorado by March 15, 2025.
- File Online with Colorado Department of Revenue
- File by Mail must be postmarked by the due date
Forms to use:
- Form 112S – S-Corporation Income Tax Return
- Form 106 – Partnership Return of Income
Extension to File S Corporation & Partnership Taxes in Colorado for 2024
You must send payment for taxes in Colorado for the fiscal year 2024 by March 15, 2025.
The Extension Deadline is September 15, 2025, to file your Colorado S Corporation or Partnership income tax return.
Colorado automatically grants a 6-month extension on filing pass-through entity tax returns. This means you do not need to file for an extension in Colorado.
This is an extension to FILE, not an extension to PAY – payment is still due March 15, 2025.
Colorado Individual Tax Deadlines for 2024
Estimated Tax Deadline for Colorado 2024
Estimated tax payments are due:
- April 15, 2024
- June 17, 2024
- September 16, 2024
- January 15, 2025
Individual Tax Deadline for Colorado 2024
You must file & pay Individual Income Taxes in Colorado by April 15, 2025.
- File Online with Colorado Department of Revenue
- File by Mail must be postmarked by the due date
Applicable forms:
- Form 104 – Colorado Individual Income Tax Return
Extension to File Taxes in Colorado for 2024
You must send payment for taxes in Colorado for the fiscal year 2024 by April 15, 2025.
The Extension Deadline is October 15, 2025, to file your Colorado Individual Income tax return.
Colorado automatically grants a 6-month extension on filing personal income taxes. This means you do not need to file for an extension in Colorado.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Sources
- Colorado Department of Revenue Tax Filing Information
- Colorado Department of Revenue Tax Extension Information
- Colorado Department of Revenue Tax Forms
The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.
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