October 2026 Tax Calendar Australia
The standalone calendar app is now the primary experience. This main-site monthly view remains available as a fallback during the transition.
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Key dates in October 2026
28 October 2026
Quarter 1 BAS due (Jul-Sep 2026)
Lodge and pay your quarterly BAS for July to September.
28 October 2026
Quarter 1 PAYG instalment due (Jul-Sep 2026)
Quarterly PAYG instalment due date for most instalment payers.
28 October 2026
Super guarantee payment due (Q1 Jul-Sep 2026)
Super contributions must be received by each employee's fund by this date.
31 October 2026
Individual self-lodgment deadline
Final date to lodge yourself; engage a registered tax agent by this date for agent schedules.
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FAQ
What is the self-lodgment deadline?
For most individuals, the self-lodgment deadline is 31 October each year, with next business day treatment if needed.
Are these dates legal advice?
No. This calendar is informational only. Always confirm your exact obligation on the ATO website or with a registered tax agent.