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Australia Tax Return Checklist 2026

Make sure you do not miss key tax documents, deductions, and preparation dates.

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Key Dates

1 July: New financial year begins

Late July: ATO pre-fill data available

31 Oct: Self-lodgment deadline

May 2027: Tax agent deadline

This page is for general educational purposes only and is not tax advice. Always check ATO guidance or speak with a registered tax agent.