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How to Calculate 2023 Colorado State Income Tax by Using State Income Tax Table

1. Find your income exemptions

2. Find your pretax deductions, including 401K, flexible account contributions ...

3. Find your gross income

4. Check the 2023 Colorado state tax rate and the rules to calculate state income tax

5. Calculate your state income tax step by step

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Colorado State Tax Tables

Tax rate used in calculating Colorado state tax for year 2023

State Abbreviation:


State Tax Withholding State Code:


Acceptable Exemption Form:


Basis For Withholding:

Federal Exemptions

Acceptable Exemption Data:


TSP Deferred:


Special Coding:


Additional Information:

A state tax certificate is not required since Federal exemptions are used in the computation of the state formula.

Withholding Formula >(Colorado Effective 2023)<
  1. Subtract the nontaxable biweekly Thrift Savings Plan contribution from the gross biweekly wages.

  2. Subtract the nontaxable biweekly Federal Health Benefits Plan payment(s) (includes dental and vision insurance program, and flexible spending account - health care and dependent care deductions) from the amount computed in step 1.

  3. Add the taxable biweekly fringe benefits (taxable life insurance, etc.) to the amount computed in step 2 to obtain the adjusted gross biweekly wages.

  4. Multiply the adjusted gross biweekly wages times 26 to obtain the gross annual wages.

  5. Determine the exemption allowance by applying the following guideline and subtract this amount from the gross annual wages to compute the taxable income.
  6. Exemption Allowance = $4,500 (for Single) or $9,000 (for Married)

  7. Apply the taxable income computed in step 5 to the following table to determine the annual Colorado tax withholding.

  8. Tax Withholding Table

    If the Amount of
    Taxable Income Is:

    The Amount of Colorado
    Withholding Should Be:


    But Not

    Of Excess

    $      0
    >and over
    $  0
    $      0

  9. Divide the annual Colorado tax withholding by 26 and round to the nearest dollar to obtain the biweekly Colorado tax withholding.

Need a Better Way to Calculate Colorado State Income Tax Withholdings?

Click here to view the step by step guide on
How to Calculate Colorado State Income Tax Withholdings Automatically

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