Colorado State Taxes and CO Income Tax

Colorado State Income Taxes for Tax Year 2022 (January 1 - Dec. 31, 2022) can be prepared and e-Filed now along with an IRS or Federal Income Tax Return (or you can learn how to only prepare and file a CO state return). Attention: The Colorado tax filing and tax payment deadline is April 18, 2023. Find IRS or Federal Tax Return deadline details.

efile Colorado state tax return
"The Centennial State"

The Colorado tax filing and tax payment deadline is April 18, 2023.  If you file a tax extension you can e-File your Taxes until October 16, 2023 without a late filing penalty. However, if you owe Taxes and don't pay on time, you might face late tax payment penalties. Tip: File on time, even you can't pay on time, as the late filing penalties are higher than the late payment penalties. Estimate your penalties with our free PENALTYucator tool. makes it easy for you to e-file your IRS and Colorado State Tax Return (e.g resident, nonresident, or part-year resident returns). However, the IRS and the respective State Tax Agencies require you to e-file a Federal Income Tax Return at the same time you e-file a State Tax Return. This is not an policy but an IRS and State Agency policy. Thus, technically you cannot e-File anywhere - not just - a Colorado Tax Return without also e-filing the associated IRS Tax Return. But there is good news, please read on.

Detailed instructions on how you can only prepare and mail in - not eFile - a Colorado 2022 Tax Return - here via However, you must download/print and sign the forms and mail them to the Tax Agency.

Colorado State Income Tax Rate: 4.40%
Where Is Your Colorado Tax Refund Money
Step 1: Sign into your account and check acceptance by the Tax Agency.
Step 2: Check your Colorado Tax Refund Status.
Where is Your IRS Refund?
Step 1: Sign into your account and check acceptance by the IRS.
Step 2: Check your IRS Tax Refund Status.
Colorado Income Tax Extension
How to correct a rejected Tax Return
If your CO Income Tax Return was rejected by the CO Tax Agency - not - instructions on how to correct a rejected Colorado Tax Return.
Colorado, IRS Late Filing, Tax Payment Penalties
1. Late Filing Penalty:This penalty is $5 or a percentage of the unpaid tax equal to 5% (whichever is greater) for each month the tax return is filed after Tax Day, plus ½% for each full or partial month the tax remains unpaid. It will not exceed a total of 12%.
2. Late Payment Penalty: This penalty is the same as the late filing penalty.
3. IRS Penalties: Calculate and Estimate your potential IRS Income Tax Return Penalties.
CO Tax Return Mailing Addresses
Find various Colorado Mailing Addresses for tax returns, tax amendments, and tax payments.
Colorado Income Tax Brackets
Colorado Income Tax Forms
Colorado Unemployment Benefits
Colorado fully taxes unemployment income at the state level.
Colorado Marriage Penalty

Start Federal and Colorado Tax Returns

E-File These 2022 Colorado State Tax Forms

Prepare and e-File these 2022 Colorado State Forms in conjunction with your Federal and State Income Tax Return. As you proceed through the tax interview on, the application will select the correct state forms for you. You can also select tax forms individually. All these forms will then be e-filed by you to the CO State Tax Agency. Instructions on how to only prepare a State Income Tax Return.


* Due to IRS and State Tax Agency tax data sharing and validation requirements, you can only e-file a State Income Tax Return while also e-filing a Federal Income Tax Return. This is not an created policy, but all online tax web sites have to adhere to this IRS/state issued tax data sharing policy. You can however prepare all 44 State Income Tax Returns on if you have already e-Filed or filed your IRS return. Instructions on how you can ONLY prepare and file State Income Tax Return(s). Only on can you prepare, file or e-file unlimited State Tax Returns for one low price and not pay for each State return like you would do on H&R Block® vs. TurboTax®. Dare to Compare Now.