In these days, all employers should already have accumulated evidence for the annual settlement of their employees' advances and issued a Certificate of Taxable Income to employees who request it. Payroll accountants are already working on it all.
Wages not paid up by 31 January 2019 shall be considered as income for the calendar year in which they were paid, and the advances deducted from such income shall be counted towards the tax liability only in the year in which they were paid. These unpaid wages cannot, therefore, be included in the employee's tax base when the annual advance payments are settled. If these situations arise, please inform your payee thoroughly.