Dear Khun Aunchalee,
I am very sorry for the mistake on tax calculation of October 14 payroll. As we had fixed the tax of bonus off cycle payment in October and missed to remove those fixed tax amount when we processed October payroll normal run therefore the payroll system considered that there was tax deduction ready from bonus payment. Thus, payroll system did not withhold tax for October normal run so employees’ personal withholding tax was zero.
Thus, there will be tax adjustment in November and December payroll that employees’ personal withholding tax will be increased in order to balance for the under tax deduction of October.
I sincerely apologize for the error and inconvenience caused due to this missing withholding tax of October payroll