Normally my federal income tax as a percentage of my gross pay is around 6%. This is just the federal income tax and not the FICA stuff I'm talking about. For the check I just got for the days I didnt take off sick the federal tax was 25%, which makes the combined federal taxes on this check to be around 40%. My tax bracket is suppose to be around 15%. Is there something I am missing about this high federal income tax on the sick pay check, or did payroll likely screw up?