TAXES 18-51, Colorado State Income Tax Withholding
Published: May 14, 2018
Effective: Pay Period 09, 2018
Summary
The annual allowance amount, per exemption claimed, has changed for the State of Colorado. No action on the part of the employee or the personnel office is necessary.
Tax Formula
State Abbreviation: |
CO |
State Tax Withholding State Code: |
08 |
Acceptable Exemption Form: |
None |
Basis for Withholding: |
Federal Exemptions |
Acceptable Exemption Data: |
None |
TSP Deferred: |
Yes |
Special Coding: |
None |
Additional Information: |
A State tax certificate is not required since Federal exemptions are used in the computation of the State formula. |
Withholding Formula (Effective Pay Period 09, 2018)
- Subtract the nontaxable biweekly Thrift Savings Plan (TSP) contribution from the gross biweekly wages.
- 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.
- Add the taxable biweekly fringe benefits (taxable life insurance, etc.) to the amount computed in step 2 to obtain the adjusted gross biweekly wages.
- Multiply the adjusted gross biweekly wages by the number of pay dates in the tax year to obtain the gross annual wages.
- Determine the exemption allowance by applying the following guideline and subtract this amount from the gross annual wages to compute the taxable income:
Number of Exemptions
Exempt Amount
0
$0
1
$4,050
2
$8,100
3
$12,150
4
$16,200
5
$20,250
6
$24,300
7
$22,950
8
$21,600
9
$20,250
10 or more
$18,900
- Apply the taxable income computed in step 5 to the following table to determine the annual Colorado tax withholding:
Single Tax Withholding Table
Taxable Wages
Amount of Tax
Over $0 but not over $2,300
$0.00
Over $2,300
4.63% of excess over $2,300
Married Tax Withholding Table
Taxable Wages
Amount of Tax
Over $0 but not over $8,650
$0.00
Over $8,650
4.63% of excess over $8,650
- Divide the annual Colorado tax withholding calculated in step 6 by the number of pay dates in the tax year and round to the nearest dollar to obtain the biweekly Colorado tax withholding.
- Add any additional amount or percentage elected by the employee to the pay period tax calculated in the above step and round to the nearest dollar to determine the amount of tax to be withheld for this pay period.
Resources
To view the updated tax formula, go to the
page from the drop-down menu on the National Finance Center (NFC) homepage. Select the tab and select from the menu to launch the tax map. Select the desired State from the map provided for the formula.Inquiries
For questions about NFC processing, authorized Servicing Personnel Office representatives should contact the NFC Contact Center at
or via the customer service portal.