The key ATO due dates for individuals, sole traders and small businesses, from July 2026 to October 2027. Filter to the dates that apply to you and add them to your phone's calendar with a reminder.
Dates from the ATO's published due dates · last reviewed October 2026
⚠ This is not tax advice. The information on this page is general in nature and doesn't take your personal circumstances into account. It's a plain-English summary of ATO guidance as at October 2026, and rates and rules change each income year. Before you rely on it, check the linked ATO page or speak to a registered tax agent. Lodgya is a record-keeping tool and is not a registered tax agent.
The 2025–26 income year ended on 30 June. You can lodge from 1 July, and the ATO pre-fills most information from employers, banks and health funds by late July.
From 1 July 2026, employers must pay super guarantee for each payday, and it must reach employees' super funds within 7 business days of payday. Quarterly super due dates no longer apply.
Lodge and pay your June monthly business activity statement.
Lodge and pay your quarterly BAS, and pay your quarter 4 PAYG or GST instalment notice. If you lodge online you may be eligible for up to 2 extra weeks.
Final quarterly due date before Payday Super: super guarantee for April–June 2026 must reach funds by this date.
Lodge and pay your July monthly business activity statement.
Businesses in certain industries that pay contractors must lodge a TPAR. Also the date to lodge a super guarantee charge statement and pay the charge if Q4 2025–26 super was missed.
Lodge and pay your August monthly business activity statement.
Lodge and pay your September monthly business activity statement.
If you pay PAYG instalments annually, pay your annual instalment notice (Form N).
Lodge and pay your quarterly BAS, and pay your quarter 1 instalment notice. If you lodge online you may be eligible for up to 2 extra weeks.
Lodge your own 2025–26 return by this date. Using a registered tax agent? Engage them before this date to be covered by their lodgment program.Falls on a Saturday, so it moves to the next business day: Monday 2 November.
If you're voluntarily registered for GST with turnover under $75,000 and lodge annually, lodge and pay your annual GST return.Falls on a Saturday, so it moves to the next business day: Monday 2 November.
Lodge and pay your October monthly business activity statement.Falls on a Saturday, so it moves to the next business day: Monday 23 November.
If you lodged your own return between 1 July and 31 October and have a tax bill, payment is due by this date.Falls on a Saturday, so it moves to the next business day: Monday 23 November.
Lodge and pay your November monthly business activity statement.
Lodge and pay your December monthly BAS. Some small businesses lodging electronically through a tax or BAS agent have until 21 February. Check the due date on your BAS.
Lodge and pay your January monthly business activity statement.Falls on a Sunday, so it moves to the next business day: Monday 22 February.
Lodge and pay your quarterly BAS, and pay your quarter 2 instalment notice. This date already includes a one-month extension, so the online 2-week extension doesn't apply.Falls on a Sunday, so it moves to the next business day: Monday 1 March.
If you lodge an annual GST return and aren't required to lodge a tax return, it's due by this date.Falls on a Sunday, so it moves to the next business day: Monday 1 March.
Lodge and pay your February monthly business activity statement.Falls on a Sunday, so it moves to the next business day: Monday 22 March.
Lodge and pay your March monthly business activity statement.
Lodge and pay your quarterly BAS, and pay your quarter 3 instalment notice. If you lodge online you may be eligible for up to 2 extra weeks.
Lodge and pay your April monthly business activity statement.
Lodge and pay your May monthly business activity statement.
Last day of the financial year. Make sure your income, deductions and receipts for 2026–27 are recorded.
Super guarantee contributions paid by 30 June 2027 qualify for a tax deduction in the 2026–27 income year.
You can lodge your 2026–27 return from 1 July. Waiting until the ATO's pre-fill is ready, generally by late July, makes it less likely you'll miss income.
Lodge and pay your June monthly business activity statement.
Lodge and pay your quarterly BAS, and pay your quarter 4 instalment notice. If you lodge online you may be eligible for up to 2 extra weeks.
Lodge and pay your July monthly business activity statement.Falls on a Saturday, so it moves to the next business day: Monday 23 August.
Businesses in certain industries that pay contractors must lodge a TPAR for 2026–27.Falls on a Saturday, so it moves to the next business day: Monday 30 August.
Lodge and pay your August monthly business activity statement.
Lodge and pay your September monthly business activity statement.
If you pay PAYG instalments annually, pay your annual instalment notice (Form N).
Lodge and pay your quarterly BAS, and pay your quarter 1 instalment notice. If you lodge online you may be eligible for up to 2 extra weeks.
Lodge your own 2026–27 return by this date, or engage a registered tax agent before it.Falls on a Sunday, so it moves to the next business day: Monday 1 November.
If you're voluntarily registered for GST and lodge annually, lodge and pay your annual GST return.Falls on a Sunday, so it moves to the next business day: Monday 1 November.
Using a registered tax or BAS agent? They often have later due dates under their lodgment program, so check with them. Public holidays can also push a due date to the next business day.
Quarterly BAS is due on 28 October (July–September), 28 February (October–December), 28 April (January–March) and 28 July (April–June). Monthly BAS is due on the 21st of the following month.
If you lodge online you may be eligible for up to 2 extra weeks for quarterly BAS, except quarter 2, which already includes a one-month extension. A registered tax or BAS agent may also get more time. The exact due date is always shown on your BAS.
If a due date falls on a weekend or public holiday, you have until the next business day to lodge and pay. For example, 31 October 2026 is a Saturday, so a self-lodged 2025–26 tax return is due by Monday 2 November 2026.
Under Payday Super, employers must pay super guarantee for each payday instead of quarterly. Contributions must be received by employees' super funds within 7 business days after payday. The old quarterly due dates (28 October, 28 January, 28 April and 28 July) applied up to the April–June 2026 quarter.
ATO: About Payday Super
If you're voluntarily registered for GST with a GST turnover under $75,000, you can report annually. The annual GST return is due on 31 October, or 28 February if you don't have to lodge a tax return.
Contact the ATO or your registered tax professional before the due date to discuss support options. If you're in financial difficulty you may be able to set up a payment plan, and if you owe $200,000 or less you can generally do this through ATO online services. General interest charge keeps accruing on unpaid amounts.
Lodgya tracks your income, deductions, receipts, work-from-home hours and car trips all year, then gives you a clean report at tax time.
General information only, not tax advice. Dates are the ATO's standard due dates for people lodging themselves; your own due dates may differ. Always check your BAS, notice or ATO online services. See our full note and disclaimer.