Final payment of income tax is due on or before 31 March, following the end of the tax year, along with lodging an Annual Income Tax Return.
If you paid wages to any of your employees for all or part of the year, you must also submit an annual Employer Wage Income Tax Withholding Form at the end of the tax year and after any deductions for the last payment period have been paid, together with any payment on or before 31 March.
If 31 March falls on a weekend or a public holiday, the form and payment are due on the next business day.
The tax year is from 1 January to 31 December.
are to be made on or before the 15th day of the month, following the month or quarter to which the payment relates.
If the 15th is not a business day, payment is due the next business day.
See How to pay taxes for where and how to pay taxes.