I can help you with payroll, @Minddbender1.
Tax calculations in QuickBooks Online are dependent on your employee's payroll setup. These are the affecting factors: Filing status, number of allowances, pay frequency, gross wage, and an additional amount to be withheld.
It could be that the Tax exemptions functionality has been modified and that is why that employee doesn't have taxes. Here's how to verify if this is the case:
For your reference, you can check the Set up or edit an employee in Online Payroll article.
If you've updated the employee data, you'll have to delete and recreate the paycheck to refresh the calculations.
That should get you moving today, @Minddbender1. Let me know the outcome by commenting below. I'm still here to help you more with payroll if you have follow-up questions.