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W-4 Self Service

IMPORTANT:  Beginning July 1, 2009, all eligible* (see eligibility guidelines listed below) employees will be required to use the W-4 self service application to submit withholding changes and updates.

University Payroll introduced the W-4 self service application as part of the university's commitment to personal security and sustainability. With the self service application, employees can submit federal and New York State withholding changes online, rather than submitting paper forms.

Changes made using the W-4 self service application are made to both federal and state withholding allowances, but not to state additional withholding amounts. Due to differences in tax law, and depending on your individual tax situation, this may result in the wrong amount of tax being withheld for New York State, New York City, and Yonkers. Please review instructions located on form IT-2104 carefully to ensure you are claiming  the appropriate amount of tax withholding allowances. To make changes to state additional withholding amounts, or to make an alternate change to state withholding allowances, a paper IT-2104 form must be submitted to Payroll. 

If you are claiming exemption to federal taxes using the W-4 self service application, you are also claiming exemption to New York State taxes. Please ensure you are complying with exemption guidelines by reviewing the IT-2104-E form. Employees must renew exemption from withholding by February 15 each year, or taxes will be withheld.

Due to timing, changes may not be reflected on the next paycheck. Please review your paycheck to ensure withholding allowance changes are accurately reflected. The data displayed on the "Employee Essentials" Web page is updated at the beginning of each pay period, not daily.

*If you fall into one or more of the following categories, you are not eligible to use the W-4 self service application, and must submit paper W-4 and IT-2104 forms (or IT-2104-E form) to Payroll, either in person or by mail:

  • Nonresident alien employee
  • Out-of-state (NY) employee
  • Puerto Rico employee

The above listed employee types must complete the paper forms and submit them by mail or in person to University Payroll. If you have any questions, contact Payroll at (607) 255-5194 or uco-payroll@cornell.edu.

W-4 Self Service Login

Note: The ePay application is secure and can only be accessed by authorized application users. See CIT's Kerberos Authentication Web site for help topics.

Important: To ensure you submit changes for the correct number of withholding allowances, refer to the written instructions included with the paper W-4 form. Please direct inquiries regarding the W-4 self service application to uco-payroll@cornell.edu.