BAS due dates 2026-27
Quarterly BAS is due on 28 October, 28 February, 28 April and 28 July. Monthly BAS is due on the 21st day of the month after the reporting period.
Your next due date
Working out your next quarterly date…
Working out your next monthly date…
These use today's date in your Australian time zone (Sydney time if your device is set to another zone). A due date on a weekend moves to the Monday. Public holidays differ by state and territory and are not known here, so if the day shown is a public holiday where you are, you have until the next business day. Check the date printed on your own BAS too.
Quarterly BAS dates for 2026-27.
You report quarterly if your GST turnover is under $20 million and the ATO hasn't told you to report monthly.
| Quarter | Covers | Due date |
|---|---|---|
| Quarter 1 | July, August and September 2026 | |
| Quarter 2 | October, November and December 2026 | 28 February 2027 is a Sunday, so you have until the next business day. |
| Quarter 3 | January, February and March 2027 | |
| Quarter 4 | April, May and June 2027 |
Monthly BAS dates for 2026-27.
Monthly BAS is due on the 21st day of the month after the reporting period (a July monthly BAS is due 21 August). You must report monthly if your GST turnover is $20 million or more or the ATO has directed you to; smaller businesses can choose to.
| Month covered | Due date |
|---|---|
| July 2026 | |
| August 2026 | |
| September 2026 | |
| October 2026 | 21 November 2026 is a Saturday, so you have until the next business day. |
| November 2026 | |
| December 2026 | |
| January 2027 | 21 February 2027 is a Sunday, so you have until the next business day. |
| February 2027 | 21 March 2027 is a Sunday, so you have until the next business day. |
| March 2027 | |
| April 2027 | |
| May 2027 | |
| June 2027 |
Lodging online, paying late and annual returns.
If you lodge online you may be eligible for an extra 2 weeks to lodge and pay your quarterly BAS, and you may get extra time if you lodge through a registered tax or BAS agent. A later date does not apply to Quarter 2 because its due date already includes a one-month extension.
- Pay in full and on time to avoid general interest charge (GIC).
- The ATO app can set calendar reminders for lodgment dates.
- If you can't pay on time, contact the ATO or your tax professional before the due date. If you owe $200,000 or less you may be able to set up a payment plan online.
- Businesses that are voluntarily registered for GST with GST turnover under $75,000 ($150,000 for non-profits) lodge an annual GST return, due 31 October (or 28 February if they are not required to lodge a tax return then).
This page lists the dates for 2026-27 only. When the last of them has passed it says so rather than guessing the next year's dates.
Good to know.
When is my next BAS due?
The boxes at the top of this page work it out from today's date. Quarterly BAS for 2026-27 is due 28 October 2026, 28 February 2027 (a Sunday, so you have until the next business day), 28 April 2027 and 28 July 2027. Monthly BAS is due on the 21st day of the month after the reporting period.
Do I report quarterly or monthly?
You report quarterly if your GST turnover is under $20 million and the ATO hasn't told you to report monthly. You must report monthly if your GST turnover is $20 million or more or the ATO has directed you to; smaller businesses can choose to.
What if the due date is on a weekend or public holiday?
You have until the next business day to lodge and pay.
Do I get extra time if I lodge online?
If you lodge online you may be eligible for an extra 2 weeks to lodge and pay your quarterly BAS, and you may get extra time if you lodge through a registered tax or BAS agent. A later date does not apply to Quarter 2 because its due date already includes a one-month extension.
Where the numbers come from.
Checked against the ATO pages on 24 October 2026.
- ATO: Due dates for lodging and paying your BAS (page updated 17 September 2026)
Kept's tax tools are estimates to help with your reporting, not professional advice: check anything that matters with your accountant.
Finished jobs are one tap from an invoice.
Kept is built for lawn care, pressure washing, cleaning and handyman businesses. Free plan, no time limit.