quarterly, page-3

each company in australia works off 4 Q's for BAS purposes.

this is applicable for private P/L and public P/L companies.

P/L's need to submit BAS Q's 28 days after each quarter.

Q1 is 1st Jul to 30th Sep; +28 days is end of Oct
Q2 is 1st Oct to 31st Dec; +28 days is end of Jan
Q3 is 1st Jan to 31st Mar; +28 days is end of Apr
Q4 is 1st Apr to 30th Jun; +28 days is end of Jul

NOTE: Q2 usually given an additional MONTH as it is CHRISTMAS period, so in reality is not due until 28 Feb, instead of 28 Jan.

So yea, FY Q4 (which is the next quarter) will come out approx 28th Jul -- they can submit later but they pay a % interest penalty each day late.