Colorado state tax filing

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$0Simple tax returns
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  • 350+ deductions and credits
  • Filing history, compare this year with last year
  • Print past and current tax returns at any time

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$0Investments and rental income
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  • Import prior year information
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  • Deduction for your Health Savings Account

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Colorado tax details

The Colorado Department of Revenue made a few changes for the 2025 tax year.

The tax rate changed from 4.25% to 4.4%.

The first-time home buyer savings account subtraction was removed.

The following credits are new: Colorado promise tuition and fee credit, aircraft modification for unleaded fuel credit, apprenticeship credit, disability assistance credit, and the qualified care worker credit.

2025 Colorado tax forms

These are the supported Colorado state tax forms on FreeTaxUSA:

  • Form 104
    Colorado Individual Income Tax

  • Form 104AD
    Colorado Subtractions from Income

  • Form 104AMT
    Colorado Alternative Minimum Tax Computation

  • Form 104CH
    Colorado Voluntary Contributions

  • Form 104CN
    Colorado Child Tax Credit

  • Form 104CR
    Colorado Individual Credit

  • Form 104EE
    Colorado Easy Enrollment Information

  • Form 104EP
    Colorado Estimated Income Tax Payment Form

  • Form 104PN
    Colorado Part-Year Resident/Nonresident Tax Calculation

  • Form 104TN
    Colorado Earned Income Tax Credit for ITIN Filers

  • Form 104X
    Colorado Amended Individual Income Tax

  • DR 0347
    Colorado Child Care Expenses Tax Credit

  • DR 1330
    Colorado Strategic Capital Tax Credit

  • DR 0350
    Colorado First-time Home Buyer Savings Account Interest Deduction

  • DR 0375
    Colorado Credit for Employer Paid Leave of Absence for Live Organ Donation

  • DR 0617
    Colorado Innovative Motor Vehicle Credit

  • DR 0619
    Colorado Assigned Innovative Motor Vehicle Credit and Electric Bicycle Credit

  • DR 1217
    Colorado Qualified Care Worker Credit

  • DR 1307
    Colorado Residential Energy Storage System Credit

  • DR 1322
    Colorado Heat Pump System Credit

  • DR 1703
    Colorado Early Childhood Educator Credit

  • DR 1778
    Colorado e-Filer Attachment Form

  • DR 8454
    Colorado Individual Income Tax Declaration for Electronic Filing

  • DR 0900
    Colorado Individual Income Tax Payment Form

  • DR 0158-I
    Colorado Individual Income Tax Extension Payment

  • DR 102
    Colorado Claim for Refund on Behalf of Deceased Taxpayer

Frequently asked questions

2025 Colorado filing deadlines

Keep these Colorado state deadlines in mind as you do your taxes.

  • Individual tax returns
    Due by April 15, 2026

  • Colorado tax extension
    Due by April 15, 2026

  • Income tax payment
    Due by April 15, 2026

  • Tax returns for extension filers
    Due by October 15, 2026

2025 Colorado refunds

Ways to receive your refund

Get your Colorado refund deposited in your bank account, mailed as a check, loaded on a prepaid debit card, or put towards next year's Colorado taxes.

Refund status for e-filed tax returns

If you filed your Colorado tax return electronically, you can usually check your CO refund status 4-5 business days after the Colorado Department of Revenue accepts your return.

Refund status for mailed tax returns

If you mailed your Colorado tax return, you should wait 3 to 4 weeks before checking your CO refund status. Once processed, it may take 5 to 7 business days for your refund to appear in your bank account or on a prepaid debit card.

How to check your refund status

Check your CO refund status online at www.colorado.gov/revenueonline/

Call the Colorado Department of Revenue at 303-238-7378

2025 Colorado state tax payments

Colorado has many income tax payment options. Find the option that works best for you below.

Pay electronically

You can use this payment option when you e-file with us.

Pay with a card

Visit www.colorado.gov/RevenueOnline for details.

Due by April 15, 2026

Pay by mail

If mailing your tax return, mail a check or money order with your return. If you e-file your tax return, mail in a check or money order with Form DR 0900.

Due by April 15, 2026

2025 Colorado extension

An extension extends the time you have to file your return by up to 6 months. If you need to pay taxes, you are required to pay the amount due by April 15, 2026. If you pay late, you may be charged a late penalty and interest on any unpaid taxes.

You need to pay 90% of your taxes by April 15, 2026. If you pay late, you may be charged a late penalty and interest on any unpaid taxes.

If you expect a Colorado refund:

Colorado extensions are automatic. No filing is required.

If you expect to owe Colorado taxes:

Go to www.colorado.gov/RevenueOnline and select 'Make a Payment'.

Colorado prior year taxes

Even though the deadline has passed, you can still prepare Colorado taxes for prior years. Many people who file late tax returns have refunds waiting for them. We'll help you prepare and mail your federal and state tax returns.

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