A New Tax System (Goods and Services Tax) Act 1999

Chapter 2 - The basic rules  

Part 2-7 - Returns, payments and refunds  

Division 31 - GST returns  

31-10   When GST returns must be given - other tax periods  

(1)    

You must give your * GST return for a tax period (other than a * quarterly tax period) to the Commissioner:

(a) on or before the 21st day of the month following the end of that tax period; or

(b) within such further period as the Commissioner allows.

(2)    

However, if the tax period ends during the first 7 days of a month, you must give the * GST return to the Commissioner:

(a) on or before the 21st day of that month; or

(b) within such further period as the Commissioner allows.