State Tax for Missouri Residents

Missouri has made a change to its tax guide, which affects employees who are residing in Missouri and working in other states.  These employees should submit a MO W-4C to the Payroll Office regarding their employment with KU only.  The MO W-4C helps our office determine how to set up your state income tax correctly. The tax situations which this form will suffice for are as follows:

1. Employees working 100% in the state of Kansas:
   • Fill out number 1 in the box listing Kansas as the state you are performing 100% of your services
2. Employees working 100% in the state of Missouri:
   • Fill out number 2 in the box listing 100% of your services are performed in Missouri.
   • Submit a regular MO W-4 Form.
   • Submit an Out of State Employee Form.
3. Employees working a percentage in Missouri and a percentage in Kansas:
   • Fill out number 2 listing the percentage of time you work in Missouri.
   • Submit a regular MO W-4 form.
   • Submit an Out of State Employee Form.
   • Submit a K-4 if you haven't already or wish to update your Kansas withholding status.
4. Employees working a percentage in Missouri and a percentage in another state:
   • Fill out number 2 listing the percentage of time you work in Missouri.
   • Submit a regular MO W-4 form.
   • Submit an Out of State Employee Form.
   • Submit the state withholding tax allowance certificate for your state.  These forms can usually be found on your state's Department of Revenue website.
5.  Employees who live in Kansas City and wish to have the 1% earnings tax withheld from their pay should fill out the Payroll Authorization for Kansas City Missouri Earnings Tax form.

See the Employee Forms page to access the necessary tax forms.

*Failure to submit a MO W-4C may result in taxes being withheld from both Kansas and Missouri.  If a MO W-4, K-4, or other state withholding certificate is not received, we will set up the tax at the default rate of single with 0 allowances.

If your tax situation does not fit one of the above, please contact the Payroll Office for further assistance.