Key Financial Dates 2018

July 1	New financial year begins.
July 14	Pay-As-You-Go (PAYG) withholding payment summaries need to be provided to your employees by this date.
July 28	Quarter 4 superannuation guarantee contributions must be received by the super fund.
July 28	Quarter 4 Business Activity Statement (BAS) due.
14 August	PAYG withholding payment summary annual report due.
28 August	Taxable payments annual report due.
21 October	Annual PAYG instalment due.
28 October	Quarter 1 superannuation guarantee contributions must be received by the super fund.
28 October	Quarter 1 BAS due.
28 October	Final date to change PAYG instalments report and payment options.
28 October	Final date to change Goods and Services (GST) reporting options.
31 October	PAYG withholding annual report due.
31 October	Individual, partnership and trust income tax returns due.
11 November	September quarter BAS due.
28 January	Quarter 2 superannuation guarantee contributions must be received by the super funds.
28 February	Quarter 2 BAS due.
28 April	Quarter 3 superannuation guarantee contributions must be received by the super fund.
28 April	Quarter 3 BAS due.
11 May	March quarter BAS due.
21 May	Fringe Benefits Tax (FBT) return due.
30 June	End of the financial year.

Source: https://www.business.gov.au/news/important-dates-for-small-business-owners