28 July 路 Official deadline
Super guarantee for the June quarter
Employers must have paid employee super for April to June.
ato.gov.auAustralian filing, penalties and appeals
Australian tax deadlines that protect your money
What to file with the ATO, when penalties begin, and how long you have to challenge a decision. Every step opens the official source.
Tax year
1 July to 30 June
If a due date falls on a weekend or public holiday, the ATO accepts the next business day.
File and pay
31 October 路 Official deadline
Lodge your own return
Deadline for lodging your own tax return for the year that ended 30 June.
ato.gov.au28 October 路 Official deadline
Super guarantee for the September quarter
Employee super for July to September must be paid.
ato.gov.au21 November 路 BAS
Quarterly BAS, September quarter
Business activity statement and GST for July to September, when lodging on paper or online yourself.
ato.gov.au28 January 路 Official deadline
Super guarantee for the December quarter
Employee super for October to December must be paid.
ato.gov.au28 February 路 BAS
Quarterly BAS, December quarter
Business activity statement and GST for October to December.
ato.gov.au15 May 路 Official deadline
Tax agent lodgement deadline
Latest date for most returns lodged through a registered tax agent.
ato.gov.auPenalties, payment help and appeals
The date on your own notice wins. Appeal periods often start when the ATO sends that notice, not at the tax year end.
appeal
Object to a tax decision
Commonly 2 or 4 years, but some decisions have 60-day limits
Check the decision letter and the ATO eligibility page before relying on a general period.
Open Objection form for taxpayersfile
Lodge your own individual return
31 October after 30 June year end
A registered tax agent may have a later date if you engage them on time.
Open Individual tax returnpay
Arrange manageable repayments
Apply before the due date where possible
Interest can continue while a payment plan is active.
Open ATO payment planappeal
Ask for late-lodgment penalties or interest to be reduced
As soon as you can explain the circumstances
Explain what happened, when it was fixed and the steps taken to prevent it happening again.
Download Remission requestBuild your complete Australian return
Work through income, expenses and deductions, see the estimated tax, then copy the checked figures into the official filing service.
Start the step-by-step returnOfficial library connection
The library holds the official rules behind these dates. Source checks can flag a change, but a person must approve it before Taxmiser changes a calculation.