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- Australiaaccounter26.com/au(current region)
- South Africaaccounter.co.za
- Globalaccounter26.com · R
Opens the same page in that region when one exists, otherwise its home page. We never switch region for you automatically.
BAS due dates
Business activity statement (BAS) due dates for the 2026–27 financial year.
This calendar is informational only. Accounter does not lodge BAS and does not run STP (Single Touch Payroll); any figure here is an estimate to help you plan. Always confirm dates with the ATO.
Quarterly BAS
| Period | Due |
|---|---|
| Quarter 1 (1 July – 30 September) FY2026-27 | Wed 28 October 2026 |
| Quarter 2 (1 October – 31 December) FY2026-27 | Mon 1 March 2027 |
| Quarter 3 (1 January – 31 March) FY2026-27 | Wed 28 April 2027 |
| Quarter 4 (1 April – 30 June) FY2026-27 | Wed 28 July 2027 |
Monthly BAS
Monthly BAS is generally due on the 21st of the month after the reporting month. Where a date falls on a weekend, this calendar shows the next Monday; public holidays are not modelled.
| Reporting month | Due |
|---|---|
| July 2026 | Fri 21 August 2026 |
| August 2026 | Mon 21 September 2026 |
| September 2026 | Wed 21 October 2026 |
| October 2026 | Mon 23 November 2026 |
| November 2026 | Mon 21 December 2026 |
| December 2026 | Thu 21 January 2027 |
| January 2027 | Mon 22 February 2027 |
| February 2027 | Mon 22 March 2027 |
| March 2027 | Wed 21 April 2027 |
| April 2027 | Fri 21 May 2027 |
| May 2027 | Mon 21 June 2027 |
| June 2027 | Wed 21 July 2027 |
Tax agent concession
If you lodge through a registered tax or BAS agent, the ATO generally allows about two extra weeks for lodgement and payment on eligible returns, and the exact dates depend on your agent's lodgement program. Ask your agent for your dates; the dates above are the standard ones.
Download .ics calendarSource: ATO – Due dates for lodging and paying your BAS. Last checked 13 October 2026. Amounts on this site are in AUD.