Please do as follows to remove tax priority:
Go to the Core module and click Personnel Details.
Select the employee and change the employee's Marital Status to Married and Save.
Go to the Payroll module and click Modules.
Select Income Tax, Income Tax Record.
Remove the Tax Priority and Save.
Go to the Core module and click Personnel Details.
Select the employee, change the employee's Marital Status back to Single and Save.
