Key ATO dates for 2026‑27
One page, every deadline that matters to a small business, in date order. Print it, pin it up, and nothing sneaks up on you.
- Quarterly and monthly BAS and IAS due dates, including the extended dates for agent lodgment
- PAYG withholding and instalment dates
- End-of-financial-year and Single Touch Payroll finalisation dates
- Public holidays that shift a due date
Need a hand meeting these dates?
We prepare and lodge BAS and IAS for businesses across the South West, and we'll remind you before each one is due.