Colorado Tax Brackets, Rates and Standard Deductions

You can prepare and e-File your 2019 Colorado Income Taxes here on eFile.com together with your Federal Income Tax Return. Information on how to only file a Colorado State Income Return.

Find Colorado income tax forms, tax brackets, deductions, and rates by tax year.

However, if you still need to file a return for a previous tax year, find the Colorado tax forms below. You can complete and sign the forms here on eFile.com before you mail them to the CO Department of Revenue. For Federal or IRS back taxes access the tax forms here.

Below find links to other important Colorado income tax return information and other related features (e.g. tax extension, amendment, etc.)

Colorado Income Tax Returns

Colorado Income Taxes
Prepare only a CO State Return without an IRS return. Details
Step by Step instructions on how to only Prepare and Download - not eFile - State Returns on eFile.com.
File a 2019 Colorado Tax Amendment
Colorado Income Tax Forms
IRS Tax Brackets, Rates by Tax Year
Calculate and Estimate your IRS Income Tax Brackets and Rates with the eFile RATEucator.

Colorado 2019 Income Bracket, Rate and Estimated Taxes Due

Colorado has a flat income tax rate of 4.63%.

Other State Income Tax Brackets: Compare State Tax Brackets, Rates
For your personal Effective IRS Tax Rate use the RATEucator Tool

2019 Colorado Standard Deductions

Colorado does not have standard deductions.

Other Standard Deductions by State: Compare State Standard Deduction Amounts
IRS Standard Deduction: Federal Standard Deductions

2020 Colorado State Tax Forms

Colorado State Tax Forms for Tax Year 2020 (Jan. 1 - Dec. 31, 2020) can be e-Filed along with a IRS Income Tax Return until October 15, 2021. Details on how to only prepare and print an Colorado 2020 Tax Return. The CO 2020 Tax Forms are below.

Form/Schedule
Description
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Form 102
Claim for Refund on Behalf of Deceased Taxpayer
Form 104
Individual Income Tax Return
Form 104CR
Individual Credit Schedule/Credit for Income Tax Paid to Another State
Form 104EP
Estimated Income Tax Payment Voucher
Form 104PN
Part-Year Resident/Nonresident Tax Calculation Schedule
Form 204
Computation of Penalty Due Based on Underpayment of Colorado Individual Estimated Tax
Form DR0900
Individual Income Tax Payment Voucher
Form DR1366
Enterprise Zone (EZ) Carryforward Schedule 2
Determines your paycheck CO Tax Withholding amount per employer.
Step 1: Complete and submit to your employer(s).
Step 2: Estimate, Calculate your IRS Tax Withholding now.

2019 Tax Year Colorado State Tax Forms

Colorado State Income Tax Forms for Tax Year 2019 (Jan. 1 - Dec. 31, 2019) can no longer be prepared and e-filed. Complete the respective Form(s) below, sign and mail them to the Colorado Division of Taxation. The CO Tax Forms and Mailing Addresses are below - click for the IRS Federal Income Tax Forms for Tax Year 2019.

Form/Schedule
Description
Claim for Refund on Behalf of Deceased Taxpayer
Individual Income Tax Return
Individual Credit Schedule/Credit for Income Tax Paid to Another State
Estimated Income Tax Payment Voucher
Part-Year Resident/Nonresident Tax Calculation Schedule
Computation of Penalty Due Based on Underpayment of Colorado Individual Estimated Tax
Individual Income Tax Payment Voucher
Enterprise Zone (EZ) Carryforward Schedule 2
Tax Amendment

2018 Tax Year Colorado Income Tax Forms

Colorado State Income Tax Forms for Tax Year 2018 (Jan. 1 - Dec. 31, 2018) can no longer be prepared and e-filed. Complete the respective Form(s) below, sign and mail them to the Colorado Division of Taxation. The CO Tax Forms and Mailing Addresses are below - click for the IRS Federal Income Tax Forms for Tax Year 2018.

Form/Schedule
Description
Claim for Refund on Behalf of Deceased Taxpayer
Individual Income Tax Return
Individual Credit Schedule/Credit for Income Tax Paid to Another State
Estimated Income Tax Payment Voucher
Part-Year Resident/Nonresident Tax Calculation Schedule
Computation of Penalty Due Based on Underpayment of Colorado Individual Estimated Tax
Individual Income Tax Payment Voucher
Enterprise Zone (EZ) Carryforward Schedule 2
Tax Amendment

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