DENVER, Tuesday, January 27, 2026 — Taxpayers can now file income tax returns for 2025. The Colorado Department of Revenue, Taxation Division, offers tips to simplify the process and help Coloradans receive refunds quickly.
How to file
- Online - The Taxation Division encourages Taxpayers to file electronically. Using Revenue Online or a third-party vendor reduces processing time and errors. Taxpayers are encouraged to file all tax returns either through an accepted tax software product or via Revenue Online.
- By mail - This method is for Taxpayers who may not be comfortable using online platforms. Instructions about filing State income tax are available on each form.
The filing deadline for tax year 2025 is April 15, 2026. An automatic six-month filing extension is available if payment obligations are satisfied by April 15.
“With the opening of the 2025 income tax filing season, our team is committed to providing exceptional service and support to every Colorado taxpayer, ensuring their filing process is as simple and secure as possible,” said Brendon Reese, Taxation Division Senior Director.
Up-to-date information, including the status of state income tax refunds, is available at Tax.Colorado.gov. To check the status of a return, please visit Tax.Colorado.gov/Refund.
Taxpayers needing low or no-cost help filing state income tax returns should visit Tax.Colorado.gov/Community-Tax-Help for additional resources.