You can change your federal tax withholdings by logging on to hcm.case.edu, clicking on the Payroll tile on the home screen, and navigating to “W-4 Information” on the following screen. No one at the university can assist you with how to fill out the form, but the IRS has a withholding calculator.
If you would like to change your state tax withholdings, you will need to complete and return the State Tax form. Please note it does contain your SSN so you cannot return via email; please upload the form via our secure Box link at Ask HR Box.