Australian Tax Calendar 2026–27

Key dates for the 2026–27 financial year, from 1 July 2026 to 30 June 2027, taken from ATO pages. When a due date falls on a weekend, the ATO moves it to the next business day, and the dates below show the adjusted day. If you use a registered tax agent or BAS agent, you may have later dates.

Dates for employees

Wednesday 1 July 2026
Payday Super starts. From 1 July 2026, employers must pay super so it reaches your fund within 7 business days after each payday, instead of quarterly. ATO
Tuesday 28 July 2026
Last quarterly super guarantee payment. Employers can pay super guarantee for the April–June 2026 quarter by 28 July, the last payment under the quarterly rules. ATO
Monday 2 November 2026
Lodge your 2025–26 tax return. If you lodge your own return, it is due by 31 October; in 2026 that is a Saturday, so the due date moves to Monday 2 November. To use a registered tax agent, engage them before 31 October. ATO
Tuesday 1 June 2027
HELP indexation. Study and training loan balances owing for more than 11 months are indexed on 1 June each year. ATO
Wednesday 30 June 2027
End of the 2026–27 financial year. Before-tax super contributions count towards the year in which your fund receives them, so make any extra contributions in time to arrive by 30 June. ATO
Thursday 1 July 2027
Next tax cut. The 15% rate on taxable income between $18,201 and $45,000 falls to 14% from 1 July 2027. ATO

Estimate your refund before you lodge with the tax return calculator, and check the year’s rates on the tax rates page.

Dates for sole traders and contractors

Tuesday 28 July 2026
Quarterly BAS for April–June 2026. Lodge and pay the quarter 4 BAS for 2025–26. ATO
Wednesday 28 October 2026
Quarterly BAS for July–September 2026. Lodge and pay the quarter 1 BAS for 2026–27. ATO
Monday 2 November 2026
Annual GST return and 2025–26 tax return. If you report GST annually, your annual GST return is due by 31 October, the same day as a self-lodged tax return; in 2026 both move to Monday 2 November. ATO
Monday 1 March 2027
Quarterly BAS for October–December 2026. The quarter 2 BAS is due 28 February, which falls on a Sunday in 2027, so the due date is Monday 1 March. This due date already includes a one-month extension. ATO
Wednesday 28 April 2027
Quarterly BAS for January–March 2027. Lodge and pay the quarter 3 BAS for 2026–27. ATO
Wednesday 28 July 2027
Quarterly BAS for April–June 2027. Lodge and pay the quarter 4 BAS for 2026–27. ATO

If you report GST monthly, your BAS is due on the 21st of the following month. Lodging your quarterly BAS online may give you an extra 2 weeks, except for the October–December quarter. If you’re registered for GST, the GST calculator adds or removes GST on invoices.

Sources