BAS due dates 2026-27 for small business
If you report GST quarterly, these are the usual due dates if you report yourself. Always confirm the current dates on ato.gov.au, because dates can change and a registered tax or BAS agent may have different dates.
| Quarter | Period | Usual due date |
|---|---|---|
| Q1 | July to September 2026 | 28 October 2026 |
| Q2 | October to December 2026 | 28 February 2027 |
| Q3 | January to March 2027 | 28 April 2027 |
| Q4 | April to June 2027 | 28 July 2027 |
Monthly BAS
If you report monthly, your BAS is usually due on the 21st day of the following month. The December monthly BAS is usually due on 21 February.
Weekends and public holidays
When a due date falls on a weekend or a public holiday, you can report and pay on the next business day.
Getting your figures ready
- Reconcile your bank accounts for the period.
- Check GST codes on sales and purchases.
- Review the GST totals before you submit.
In One Click, your BAS figures are worked out from your invoices, bills and bank transactions. Prepared in One Click. Electronic lodgement coming soon.
Source: ato.gov.au. This guide is general information, not tax advice.
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