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Illinois State Withholding Is Not Calculating Correctly On Supplemental Earnings When Additional State Is Calculated on Regular Run (Doc ID 2400662.1)

Last updated on FEBRUARY 28, 2019

Applies to:

Oracle HRMS (US) - Version 12.1.3 and later
Information in this document applies to any platform.


On : 12.1.3 version, Vertex Code or Data Issue

The Illinois state income tax is being reduced by the additional tax withheld from an employee's regular pay when they are paid an additional supplemental earnings

The supplemental earnings to be taxed at the full 4.95%. With no reduction for the additional tax withheld on the regular payroll

The issue can be reproduced at will with the following steps:
1. An employee has an Additional Tax at $50.00 for Federal and Illinois state
2. They are paid their regular earnings and the additional 50.00 for Federal and Illinois is withheld correctly
3. Run a bonus earnings using Supplemental
4. FIT is withheld correctly at 22%
5. Illinois state is withheld at 4.95% minus the $50.00 additional tax that was withheld on the regular run


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