For Example: A Bonus of $100,000 with USFIT Percent Override = 40% and Supplemental Withholding 25%, will result in USFIT tax withholding $65,000.
To only withhold the Percent Override percentage on the Employees when paying earnings set to calculate Supplemental Tax rates, assign a different Earning Code that is setup on the tax with Regular Tax rates.
Note: If a state has multiple supplemental tax rates, another option is to override the tax amount on the Timecard.