Date 

Obligation

 1 December 2018

Pay income tax for taxable large/medium taxpayers, companies and super funds. Lodgment of return is due 15 January 2019.
 
Pay income tax for companies and super funds when lodgment of the tax return was due 31 October 2018.
 

 21 December 2018

Lodge and pay November 2018 monthly business activity statement.

 

 15 January 2019

Lodge tax return for taxable large/medium entities as per the latest year lodged (all entities other than individuals), unless required earlier.

 28 January 2019

Make quarter 2, 2018–19 super guarantee contributions to funds by this date.

21 February 2019

Lodge and pay December 2018 monthly business activity statement for business clients with up to $10 million turnover who report GST monthly and lodge electronically.

Lodge and pay January 2019 monthly business activity statement.

28 February 2019

Lodge and pay quarter 2, 2018–19 activity statement for all lodgment methods.
 
 Pay quarter 2, 2018–19 instalment notice (form R, S or T). Lodge the notice only if you vary the instalment amount. 

21 March 2019

Lodge and pay February 2019 monthly business activity statement.

21 April 2019

Lodge and pay March 2019 monthly business activity statement.

28 April 2019

Lodge and pay quarter 3, 2018–19 activity statement if lodging by paper.

Pay quarter 3, 2018–19 instalment notice (form R, S or T). Lodge the notice only if you are varying the instalment amount.

 Make super guarantee contributions for quarter 3, 2018–19 to the funds by this date.

 

15 May 2019

Lodge 2018 tax returns for all entities that did not have to lodge earlier (including all remaining consolidated groups), and are not eligible for the 5 June 2019 concession.
 

21 May 2019

Lodge and pay April 2019 monthly business activity statement.
 

26 May 2019

Lodge and pay eligible quarter 3, 2018–19 activity statements if you lodge electronically.
 

5 June 2019

Lodge tax returns due for individuals and trusts with a lodgment due date of 15 May 2019 provided they also pay any liability due by this date.

21 June 2019

Lodge and pay May 2019 monthly business activity statement.

30 June 2019

Super guarantee contributions must be paid by this date to qualify for a tax deduction in the 2018–19 financial year.