May 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 May 2026
21 May 2026
FBT return and payment due (self or paper)
Lodge annual FBT return and pay unless using eligible tax agent e-lodgment timing.
28 May 2026
SGC statement and payment due for Q3 shortfall
If SG was late or underpaid for Jan-Mar quarter, lodge SGC statement and pay by this date.
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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.