This process provides you with the means to update all employees' tax codes in a single step. All the employee with a tax code suffix that matches the letter will have their allowance adjusted by the number you select.
For each suffix, enter the number to add to, or subtract from the employee's tax code. If a particular suffix's code is not to be adjusted, leave the corresponding text box blank.
Click OK to proceed an update all the employee's tax codes. No tax codes are changed until you click OK.